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4.04 – Pyrazoles And Their Benzo Derivatives

J. Elguero
Published 1984 · Chemistry

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A convenient preparation of pyrazolo[1,5-a]quinazolin-5(4H)-ones
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Complexes of the methyl tris(3,5-dimethylpyrazol-1-yl) gallate ligand, MeGa(N2C5H7)3−, and its hydroxy derivative, MeGa(N2C5H7)2(OH)−. Crystal and molecular structure of [MeGa(N2C5H7)2(OH)]Mo(CO)2(η3-C4H7)
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Alkylating nucleosides. 3. The reaction of 3,5‐dimethylpyrazole nucleosides with N‐bromosuccinimide
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Synthesis, reactions, and nuclear magnetic resonance spectroscopy of 4-methyl-6H-pyrazolo(3,4-b)azepin-7-ones
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1,3‐Dipolar Cycloreversions
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Photochemical and thermal rearrangements of some 3H-pyrazoles
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Tieftemperatur-Photochemie von 2-Alkyl-indazolen
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Photocyclization of aryl halides. Part I. 5-(2-Halogenophenyl)-1,3-diphenylpyrazoles; homolytic fission assisted by radical complexation
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Application of the method of molecular orbitals to investigating the effects of conjugation between phenyl and 5-membered N-heteroatom rings
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On the syntheses and the optical properties of optically active 2-pyrazoline compounds
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Etude en Résonance Magnétique Nucléaire du Carbone‐13 de Quelques Aminopyrazoles. Sur le Problème de la Détermination des Constantes d'Equilibre Tautomère
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Calculation of the nitrogen screening constants of some N‐heterocycles
K. A. K. Ebraheem (1978)
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Studies on 1H- and 2H-N-alkylpyrazolo[3,4-d]pyridazin-4(5H)ones
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Phényl‐1 diméthylamino‐3 cyano‐4 amino‐5 pyrazole
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1-Halobenzyl-1H-indazole-3-carboxylic acids. A new class of antispermatogenic agents.
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Die Röntgenstrukturanalyse des 2 : 1‐Cycloadditionsproduktes von Diazomethan und 4‐Methyl‐1,1‐bis(trifluormethyl)‐2‐aza‐1,3t‐butadien
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Preparation of 4,6-diaminopyrazolo[3,4-d] pyrimidines with variations in substitution at the 1- and 3-positions
P. L. Southwick (1975)
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Preparation, Structure, and Reactions of Halomalondialehdes
Christian Reichardt (1975)
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A new class of heterocyclic betaines: 1,1-dimethyl-3-phenylpyrazolium-5-oxide†
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Heterocyclic diazo compounds as starting materials in organic synthesis (review)
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Mesoionic compounds derived from pyrazole, isothiazole, and isoxazole
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Determination of a new scale of ortho-steric parameters S0 from N-methylation of pyridines
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Unusual carbonyl infrared band in a new mesoionic system
M. J. Nye (1973)
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Calculation of fully optimized geometries of five- and six-membered heterocycles by the CNDO force method
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Synthesis and characterization of octahedral and trigonal bipyramidal transition metal complexes incorporating chelating gallate ligands: crystal and molecular structure of [Me2Ga(N2C5H7)(OCH2CH2NMe2)]Ni[(N2C5H7)2GaMe2]
K. Chong (1980)
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C‐Glycosides II. Synthèse d'un analogue de la pyrazomycine. Communication préliminaire
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Structure cristalline et moléculaire du sel de n-butyl-4-diphényl-1,2-dioxo-3,5 pyrazolidine-1,2 et de N-méthyl pipérazine
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A. Kreutzberger (1979)
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Synthèse de 1H‐pyrazolo[3,4‐b] pyridines et de pyrazolo[1,5‐a] pyrimidines
Y. V. Haverbeke (1979)
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Chemical evolution. XVII. Mechanisms of the photochemical rearrangements of ortho-substituted benzene derivatives and related heterocycles
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New steroidal heterocycles: the synthesis and structure of androsteno[2,3-g]-, androstano[3,2-f]-, and androsteno[16,17-g]-pyrazolo[1,5-a]pyrimidines
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Effect of hydrogen bonding on the frequency of the out-of-plane deformation vibrations of the NH bonds in pyrazole and imidazole molecules
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N 1s orbital binding energies of some pyrazole pyrazoline compounds by XPS
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Voie d'accès aux amino-3(5) pyrazoles substitués en 4 par un groupement SEt
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Nitrogen lone pairs and the ionization potentials of azines and azoles
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Aromaticity of Heterocycles
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[7+1]- and [11+1]-Cycloreactions of diazo-azoles with 1-nucleophile-1-electrophiles (ylides) to 3H-pyrazolo[5,1-c][1,2,4]triazoles and 3H-[1,2,4]triazolo[4,3-b]indazoles
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Application of the partitioning of energy in the mndo method to the study of the basicity of imidazole, pyrazole, oxazole, and isoxazole
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Steric, polar, and resonance effects in reactivity and regioselectivity of aryl radical addition to .alpha.,.beta.-unsaturated carbonyl compounds
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IR absorption spectra of 1-aryl-3-pyrazolidones
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The proton dissociation constant of pyrrole, indole and related compounds.
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Contribution a l'etude de la transformation thermique des aldazines α-ethyleniques. nouvelle voie d'acces aux pyrazoles halogenes ou substitues par des groupements phenoxy, thiophenoxy et thioethoxy en 3(5)
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Synthetic Inhibitors of Alcohol Dehydrogenase. 4-Substituted Alkyl- and Cycloalkylpyrazoles.
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Photochimie d'heterocycles azotes—V : Reactions de photosubstitution en serie heterocyclique: cas des p-nitrophenyl-1 pyrazoles et imidazoles
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Pyrazoles. 15. Nucleophilic substitution reactions on N-nitropyrazoles
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Reactions with heterocyclic diazonium salts: New routes for the synthesis of pyrazolo[1,5‐c]‐1,2,4‐triazoles and pyrazolo[1,5‐c]‐as‐triazines
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Nucleosides CV. Synthesis of the 8-((β-D-ribofuranosyl)pyrazolo[1,5-a]-1,3,5-triazine isosteres of adenosine and inosine
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Photolyse von Δ3‐Pyrazolinonen‐(5)
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Electron spin resonance study of heterocycles. II. Pyrrole, pyrazole, imidazole, and indole anion radicals
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A New Synthesis of Unsaturated Acids. IV. Further Aspects of the Scope and Mechanism of the Conversion of Halopyrazolones to α,β-Acetylenic and Olefinic Acids1
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Secondary deuterium isotope effects on both rate and product determining steps in the thermolysis of 4-methylene-1-pyrazoline
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Systemes aromatiques à 10 électrons π dérivés de l'aza-1-pentalène. I. Recherches dans la série du pyrazolo[3,4-d]-v-triazole
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Thermal Decomposition of cis- and trans-3,5-Dimethyl-1-pyrazoline
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The Arenology Principle
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Reaktion von α‐Benzoyl‐benzylcyanid mit 1.1‐disubstituierten Hydrazinen
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Polypyrazolylborates, a new class of ligands
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Ground states of conjugated molecules. XII. Improved calculations for compounds containing nitrogen or oxygen
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Heterocyclic rearrangements. Part XIV. Attempts to activate ring-opening–ring-closure rearrangements with carbon as the central atom
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The biosynthetic origin of the pyrazole moiety of,β-pyrazol-1-yl-l-alanine
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Steric factors in heterocyclic rearrangements. N-Methyl-N-phenylhydrazones of 3-benzoyl-5-phenyl-1,2,4-oxadiazole
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The crystal and molecular structure of tetrakispyrazolenickel chloride, Ni(C3H4N2)4Cl2
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A Synthesis of Withasomnine from 4-Phenylpyrazole
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Synthese d'arylacetyl-3 carbethoxy ou acetyl-4 methyl-5 pyrazoles et de pyrazolo(3,4d)pyridazines : Action de l'hydrazine sur des carbethoxy ou acetyl-4 methyl-5 alkylidene-2 et n arylaminomethylene-2(2h)furannones-3
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13C NMR study of annular tautomerism of azoles in the solid state
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An unusual diazonium salt reaction
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Tables of experimental dipole moments
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Alternative Protonation Sites in Ambident Conjugated Systems
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Relative reactivity and structures of benzoyltrimethylhydrazine and 1-benzoyl-2-methylpyrazolidine
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Phase-transfer alkylation of heterocycles in the presence of 18-crown-6 and potassium tert-butoxide
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The Variety of Thermal Pericyclic Reactions
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Amino‐7 dimethyl‐2,5 pyrazolo[1,5‐a]pyrimidine hemihydrate
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The crystal and molecular structure of dibromotetrapyrazolenickel(II), Ni(C3H4N2)4Br2
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Recherches dans la serie des azoles—VI
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3-DIAZOPYRAZOLES- SOURCES OF UNUSUAL CARBENES AND DIPOLAR REAGENTS
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Pyrazoles X. The resonance interaction in 4-nitro- and 4-nitrosopyrazoles. Ionisation constants, ultraviolet and visible spectra†
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The vilsmeier‐haack reaction. IV. Reaction of phosphorus oxychloridedimethylformamide with semicarbazones
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Nitrogen-15 nuclear magnetic resonance spectroscopy. Effects of hydrogen bonding and protonation on nitrogen chemical shifts in imidazoles
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3-Substituted pyrazole derivatives as inhibitors and inactivators of liver alcohol dehydrogenase.
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Addition d'hétérocycles azotés aux alcynes arylés; synthèse de N-styrylazoles
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Diazocarbonyl compounds and 1-diethylaminopropyne
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Reaction of ethyl 3‐ethoxymethylene‐2,4‐dioxovalerate and ethyl ethoxymethyleneoxaloacetate with 3‐aminopyrazole analogs. Synthesis and chemistry of 3,6,7‐trisubstituted pyrazolo[1,5‐a]pyrimidine derivatives
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Furazans and furazan oxides. 8. Preparation of 2-oxy- and 2-aminoindazoles by rearrangement of benzofurazan oxide derivatives
A. J. Boulton (1980)
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Quantitative 15N NMR spectroscopy
G. Levy (1980)
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Orientation de la réaction d'alkylation des pyrazoles dans des conditions neutres et en catalyse par transfert de phase
G. Tarrago (1980)
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The Nitration of Brominated Pyrazoles in Aqueous Sulfuric Acid
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Studies on the synthesis of heterocyclic compounds. Part I. The pschorr reaction in the pyrazole series
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Advances in the Chemistry of 1,2-Azoles
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Ionisation Chimique de Composés Aromatiques Nitrés
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Tris(1-phenyl-3,5-dimethylpyrazole)silver(I) nitrate
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Consecutive [1,5]-sigmatropic and dissociation-recombination processes in rearrangements of 3-substituted 3-acyl-3H-indazoles to 1-acylindazoles
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Enthalpy and entropy of association of Co(II), Ni(II), Cu(II) and Zn(II) with pyrazole in aqueous solution
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Zur frage des reaktiven anregungszustandes bei der photolyse von 3H-indazolen in lösung
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A new synthesis of formycin via nitropyrazole derivatives
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Structure cristalline et molculaire de l'actyl-1 bromo-4 pyrazole
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Etude dans la serie des organostannylazoles
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Pyrimidine derivatives and related compounds VI. A novel synthesis of 3,5‐diacetamidopyrazole and of 2‐aminopyrazolo [1,5‐α] pyrimidines
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The anomalous reaction of 2-phenylacrylophenone with some arylhydrazines
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Structural studies of analgesics and their interactions. I. The crystal and molecular structure of antipyrene
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Stable pyrazolium betaines by addition of 1,1-dialkyl-hydrazines to acetylenecarboxylic esters.
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Synthesen mit substituierten Malondialdehyden, XIX1) Darstellung fluorsubstituierter Carbo- und Heterocyclen
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Hetarylpyrazoles III. Synthesis of some 5-azolylpyrazoles
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Reactivity of indazoles and benzotriazole towards N-methylation and analysis of the 1H nuclear magnetic resonance spectra of indazoles and benzotriazoles
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The Structure of Pyrazole, C3H4N2, at 295 K and 108 K as determined by X-Ray Diffraction.
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Gas phase pyrolysis of annelated pyrazoles: a duality of mechanism in aromatic ring contraction
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The crystal and molecular structure of 3‐methyl‐3‐pyrazolin‐5‐one
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A novel route from 4-methoxy-5-nitropyrimidine to 3-amino-4-nitropyrazole and pyrazolo[3,4-b]pyrazine
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The electronic structure of aromatic molecules: ab inito molecular orbital studies and photoelectron spectra for the aza-derivatives of indole, benzofuran and benzothiophen
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1-Aminopyrazolin-5-ones: Synthesis and Reactivity
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Synthese de l'indazole‐1‐15N, de l'indazole‐2‐15N et de leurs derives n‐methyles
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Spectroscopic properties of cyclic and bicyclic azoalkanes
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Orientation of the sulfoxide bond as a stereochemical probe. Synthesis and proton and carbon-13 NMR of substituted thiopyrano[4,3-c]pyrazoles
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N‐polyazolylmethanes. 1. Synthesis and nmr study of N,N′‐diazolylmethanes
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Reactivity sequences of dipolarophiles towards diazocarbonyl compounds - MO perturbation treatment
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Nitrogen-15 nuclear magnetic resonance spectroscopy. Evaluation of chemical shift references
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Fragmentation d'azoles sous l'impact electronique VI–indazole
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A Novel One Step Synthesis of 5(3)-Methylthio-, Alkoxy-, Amino- and Hydroxypyrazoles using α-Ketoketene-S,S-Diacetals
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A single crystal X-Ray diffraction analysis of 1,9-dihydro[1] benzothiopyrano[4,3-c] pyrazole 5,5-dioxide
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The antiarrhythmic and antiinflammatory activity of a series of tricyclic pyrazoles
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A Study of the Proton Nuclear Magnetic Resonance Spectra of Aryl and Mono- and Disubstituted N-Methylazoles
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Notiz über eine einfache Synthese des tert-Butylmalondialdehyds
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1,1,1-Trimethylhydrazinium 3-carbomethoxy-5-pyrazolecarboxylate
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Structural studies of analgesics and their interactions. II. The crystal structure of a 1:1 complex between antipyrine and salicyclic acid (salipyrine)
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Extended dipolar cycloaddition reactions of 3-diazopyrazoles with electron rich olefins
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3-Oxo-1,2-diazetidinium tosylate
E. Taylor (1981)
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Mass spectrometry of nitrogen heterocycles:XI—Loss of HCN from indazole studied by 15N labelling
A. Atmani (1980)
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Photooxygenations of sydnones and azomethine imines
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The coordination chemistry of pyrazole-derived ligands
S. Trofimenko (1972)
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Thermotropic liquid crystals in the heterocyclic series (review)
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Effects of protonation on electron densities in nitrogen heterocyclic molecules
W. Adam (1967)
Mass spectrometry of heterocyclic compounds
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On the Van Alphen-Huttel rearrangement: Acid catalysed rearrangement of pyrazolenines into isopyrazoles.
R. Baumes (1973)
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Azole N-oxides. Part IV. Deoxygenation and side-chain substitution reactions of some 1-methoxypyrazole 2-oxides
F. T. Boyle (1973)
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Mercury(II) derivatives of azoles
G. D. Luca (1976)
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Röntgenstrukturanalyse von 1,2-bis(methoxycarbonylamino)-3,5-dimethylpyrazolium-bromid
Alfred Gieren (1974)
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Ringverengung bei 6H-1.3.4-Thiadiazinen
R. Schmidt (1975)
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A ring transformation of uracil into the pyrazole ring system. Reinvestigation of the reaction of 5-formyluracils with hydrazines.
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Kinetic Evidence for 1,3-Diradicals from the Thermal Decomposition of 1-Pyrazolines
R. Crawford (1965)
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Acetylinic ketones. Part II.. Reaction of acetylenic ketones with nucleophilic nitrogen compounds
F. C. Baddar (1976)
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Reductive heterocyclization leading to some 9,9‐dioxy‐4H‐pyrazolo[1,5‐b]‐1,2,4‐benzothiadiazine derivatives
S. Plescia (1976)
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Thermal [1,j] sigmatropic rearrangements
C. Spangler (1976)
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The crystal and molecular structures of 2,4‐diphenyl‐2,3‐benzodiazocin‐1(2H)‐one and 3a,8b‐dihydro‐1,3‐diphenylindeno[1,2‐c]pyrazol‐4(1H)‐one
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4-Azolylpyridine 1-oxides. Analogs of the hypoglycemic 4-azolylpyridinium salts.
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A Neutron Diffraction Study of the Crystal and Molecular Structure of Pyrazole, C3H4N2.
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Photoisomerisierung von Pyrazolen und Indazolen zu Imidazolen bzw. Benzimidazolen und 2-Amino-benzonitrilen
H. Tiefenthaler (1967)
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N.m.r. studies in the heterocyclic series: XVII—carbon‐13 spectra of indazole derivatives
P. Bouchet (1977)
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Carbenic processes in decomposition of spiro[fluorene-9,3'-indazole]. Simple route to the fluoradene system
G. Baum (1976)
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Differentiation between isomeric structures of benzazoles by 14N, 13C and 1H NMR
L. Stefaniak (1978)
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N.m.r. studies in the heterocyclic series: XVI—determination of the structure of 3‐azidoindazole by 1H and 13C n.m.r. spectroscopy
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Aminopyrazole; II1. C-Unsubstituierte 1-Alkyl-3-aminopyrazole aus 2-Chloroacrylnitril bzw. 2,3-Dichloropropannitril und Alkylhydrazinen
G. Ege (1976)
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NITROGEN-15 NMR SPECTROSCOPY: PROTOTROPIC TAUTOMERISM OF AZOLES
D. Wofford (1983)
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Proton exchange and temperature studies of pyrazole in dimethyl-d/sub 6/ sulfoxide by /sup 13/C NMR
W. Litchman (1979)
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Cycloadditions to methyl 3,3-dimethyl-3H-pyrazole-5-carboxylate
R. Huisgen (1979)
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Addition reactions of conjugated double bonds. Part V. Stereochemistry of pyrazoline ring formation from αβ-unsaturated phenylhydrazones
H. Ferres (1973)
Synthesis of some 4-substituted antipyrine derivatives structurally to local anesthetics.
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Preparation of 1,3,5-trisubsutituted pyrazoles, methyltriphenyl-5-phenyl-pyridazin-3-ylphosphonium bromide, and 4-substituted 2-methylquinolines from triphenyl(prop-2-ynyl)phosphonium bromide
E. E. Schweizer (1973)
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Single-crystal structure and electronic properties of bis[hydrotris-(pyrazol-1-yl)borato]copper(II)
A. Murphy (1979)
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4 – Ultraviolet Spectra of Heterocycles
W. Armarego (1971)
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Reactive alkynyl perfluoalkanesulfones
F. Massa (1982)
10.1016/0040-4020(78)89036-X
Equilibre tautomere du phenyl-methyl-pyrazole en solution aqueuse: mecanisme de l'interconversion
Oliver Bensaude (1978)
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The crystal and molecular structure of pyrazole
H. Ehrlich (1960)
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Cycloadditions of diphenylnitrilimine with tropone and with tricarbonyltroponeiron. Thermal [1,5] sigmatropic rearrangements of the [π6s+π4s] cycloadducts of 1,3-dipoles with tropone
M. Bonadeo (1977)
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Synthesis of 4-Bromo-1-nitropyrazoles and 1-Nitrobenzotriazoles (N-Nitroazoles)
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A reliable synthesis of 1,1-dimethylpyrazolium 5-oxides
J. W. Ellis (1982)
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Neue thermische Reaktionen von 3‐Amino‐ und 4‐(Phenylthio)sydnonen mit Alkinen und Alkenen
H. Gotthardt (1981)
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Preparation and properties of aromatic polypyrazoles from linear bis‐β‐diketones and aromatic dihydrazines
Y. Imai (1981)
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ELECTRONIC STRUCTURE OF SULFUR COMPOUNDS. 23. PHOTOELECTRON SPECTRA OF SOME PYRAZOLINETHIONES, 1,2,3‐TRIAZOLINETHIONES, AND 4‐(1,2,3‐TRIAZOLIUM) SULFIDES. EVIDENCE OF AN ABNORMAL EFFECT OF METHYLATION
C. Guimon (1978)
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Etude des conditions d'accès au triazino-1,2,4-[4,5-b] indazole
M. Robba (1978)
10.1016/S0040-4020(01)97674-4
Polypyrazolic macrocycles—II
A. Ramdani (1981)
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Forme II du complexe dinitratobis(antipyrine)cuivre(II)
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SYNTHESIS OF 2,4-DIMETHYLPYRAZOLO(1,5-A)-1,3,5-TRIAZINE
Anthony H. Albert (1973)
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Reactions of lead tetraacetate with substituted azomethines
R. Butler (1973)
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Synthese von Pyrazolidinen
K. Hesse (1971)
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Synthesis of fused heterocyclic compounds with polyphosphoric acid
E. B. Dennler (1967)
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The Structure and Reactions of Pernitrosomesityl Oxide1
J. P. Freeman (1962)
10.1021/jo00921a032
Heterocyclic studies. 43. Crystal structure of 2,3,4,7-tetrahydro-3a,4-bis(methoxycarbonyl)-2,6-dimethyl-5-phenylindazol-7-one
R. C. Gearhart (1974)
10.1055/S-1976-24047
Reaktionen von Azinen und Iminen (Azomethinen, Schiff'schen Basen) mit Dienophilen
T. Wagner‐Jauregg (1976)
10.1002/JHET.5570090212
1H-pyrazolo[3,4-b]pyridines
H. Hoehn (1972)
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Potentielle Cytostatica, XXVII. Umsetzung von Phosphorsäureamid‐dichloriden mit Pyrazolen und Pyrazolonen‐(5)
H. Dorn (1971)
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The molecular structure of 1,1-dimethyl-3-phenylpyrazolium-5-oxide
W. Camp (1970)
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Synthesis, structure, and spectroscopic and magnetic properties of a new class of dimeric, fluoro-bridged high-spin cobalt(II) compounds containing substituted-pyrazole ligands
J. Reedijk (1978)
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Etude de la conformation des n-aryl azoles par la methode e.h.t. (extended hückel theory)
T. Avignon (1978)
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σ Values of N-substituted azoles
P. Bouchet (1974)
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The standardization of aromatic and heteroaromatic nitration rates
A. Katritzky (1975)
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An unambiguous synthesis of pyrazoles by sulphur extrusion from 1,2,6-thiadiazines
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Reactions of hydrazides and hydrazones with n-butyl-lithium
D. Barton (1982)
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Structure and properties of 1-acylpyrazolines
M. A. Lapitskaya (1972)
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Torsional angles and substituent effects in phenyl-substituted azoles by carbon-13 N.M.R. chemical shifts
Cw Fong (1980)
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Cyclization of 3-diazoalkenes to pyrazoles
J. Brewbaker (1969)
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4-[3(5)-pyrazolyl]pyridinium salts. A new class of hypoglycemic agents.
V. Bauer (1968)
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Reaktionen mit Diazoketonen. IX. Addition von Diazoketonen an β‐Dicarbonylverbindungen
W. Hampel (1969)
10.1107/S0567740874002664
The crystal and molecular structure of 4'-methylene-1,2-di-m-bromophenyl-1',2',6',7'-tetraphenylspiro{pyrazolidine-4,8'-[8'H,4'H]-benzo[1,2-c:4,5-c']dipyrazoline}-3,5,3',5'-tetraone, C47H30N6O4Br2
L. Fanfani (1974)
10.1139/V76-249
Etude de l'quilibre tautomre des pyrazolinones-4
C. Sabate-Alduy (1976)
10.1021/jo00931a062
Molecular rearrangements of N-hydroxypyrazole derivatives
J. Freeman (1974)
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Mechanism of the alkylative decarboxylation of N-carbalkoxypyrazoles
J. Wilczynski (1974)
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Synthesis and tautomeric structure of some 2H-pyrazolo[3,4-d]pyridazines
Ahmad S. Shawali (1977)
10.1002/ANIE.197506651
Heterocycles as Structural Units in New Optical Brighteners
A. Dorlars (1975)
10.1002/PRAC.19743160502
Berechnung vicinaler H,H‐Kopplungskonstanten von Amino‐ und Hydroxypyrazolen sowie von Δ4‐Pyrazolinonen‐(3) über π‐Bindungsordnungen und π‐Orbitalelektronegativitäten
F. Ritschl (1974)
10.1016/S0022-328X(00)91261-0
Rhodium complexes of pyrazole and derived ligands: Another case of metal-shuttling?
N. Borkett (1974)
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Enhydrazine, 7. Carbazolderivate aus Enhydrazinen
W. Sucrow (1973)
10.1016/S0022-328X(00)80126-6
Etude dans la serie des organogallylazoles I. Synthese et structure
D. Boyer (1981)
10.1016/0040-4020(80)80218-3
Heteroannelations with o-aminoaldehydes
P. Caluwe (1980)
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EVIDENCE FOR A 1,4‐HYDROGEN SHIFT IN A DEUTERIUM‐LABELED VINYL CARBENE INTERMEDIATE IN THE FORMATION OF 1,3‐PENTADIENE FROM 3,5‐DIMETHYLPYRAZOLE
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THE CYCLOCONDENSATION OF 5-AMINO-1,3-DIMETHYLPYRAZOLE WITH ETHYL ACETOACETATE. SYNTHESIS OF ISOMERIC PYRAZOLOPYRIDONES
James Daniel Ratajczyk (1975)
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N‐methyl chemical shifts in quaternized azoles, isazoles, diazoles, and their benzologs
M. Davis (1974)
10.1002/JHET.5570070615
The synthesis and PMR study of certain 3-substituted 2-(β-D-Ribofuranosyl)indazoles
G. R. Revankar (1970)
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Kinetics of iodination of nickel(II)-coordinated pyrazole
J. D. Vaughan (1972)
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Enhydrazine, 14. Lactame aus 4,5,6,7-Tetrahydro-1H-4-indazolonen
V. Bardakos (1976)
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Cyclopropenes as Vinylcarbenoids:Intermolecular Carbene‐Addition Reactions of Sulfinyl‐ and Sulfonylcyclopropenes at Room Temperature
M. Franck-Neumann (1977)
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Novel Rearrangement of Pyrazole N-Imines with Acetic Anhydride
H. Koga (1976)
10.1248/CPB.21.2026
Studies on Heterocyclic Compounds. XIV. 1, 3-Dipolar Cycloaddition Reaction of Dimethyl Acetylenedicarboxylate with Phenylhydrazones
H. Ogura (1973)
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Fragmentation behaviour and ring expansion of 1‐methylimidazole and 1‐methylpyrazole upon electron‐impact
J. V. Thuijl (1973)
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(13)C-NMR SPECTRA OF PHENYL-SUBSTITUTED AZOLES, A CONFORMATIONAL STUDY
M. Begtrup (1973)
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Pyrazoles XI. The synthesis of 1,1′-dimethylbipyrazolyls
P. M. Timmermans (1972)
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Crystal structure and molecular geometry of bis[hydrotris(1-pyrazolyl)borato]cobalt(II)
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The π-Electronic Structures of Five-membered Heterocycles Containing Two or Three Heteroatoms and Their Benzo-derivatives
M. Kamiya (1970)
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Pyrazoles VI: The electron-releasing capacity of the pyrazole ring†
C. Wijnberger (1969)
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Methylierung von 4-Hydroxy-4-(2-piperidyl)-4H-pyrazolo [1,5-a]indol mit Formaldehyd und Ameisensäure. 11. Mitteilung über metallorganische Reaktionen und Folgeprodukte
G. Rihs (1981)
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Enhydrazine, 34. Die Addition von Methylhydrazin an Acetylendicarbonsäureester ist reversibel
W. Sucrow (1983)
10.1007/BF00537511
Sigma-polarization in 5-membered heterocyclic ring systems
W. Adam (1967)
10.1016/S0040-4039(01)87527-4
Die photolyse von 4-hydroxy- und 4-alkoxy-pyrazolin-(3)-on-(5)-derivaten ☆
Von J. Reisch (1969)
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13 C–H coupling constants as a tool in studies of azole tautomers
M. Begtrup (1974)
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Bimanes. 14. Synthesis and properties of 4,6-bis(carbalkoxy)-1,5-diazabicyclo[3.3.0]octa-3,6-diene-2,8-diones [4,6-bis(carbalkoxy)-9,10-dioxa-syn-bimanes]. Preparation of the parent syn-bimane, syn-(hydrogen,hydrogen)bimane
E. Kosower (1982)
10.1016/0022-2860(78)85027-3
The electronic structure of heteroaromatic molecules; ab initio calculations and photoelectron spectra for the aza derivatives of benzo[c] furan, benzo [c] thiophen, N-methyl isoindole and related compounds
Micheal H. Palmer (1978)
10.1007/BF00471213
Mechanism of the oxidative dehydrogenation of 1,3,5-triphenyl-δ2-pyrazoline
A. S. Morkovnik (1979)
10.1016/S0040-4020(01)82860-X
Photorearrangements of some N-methyl diazoles
P. Beak (1969)
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The vilsmeier-haack reaction-VI reaction of phosphoryl chloride-dimethylformamide with schiff bases and azines
M. Kira (1970)
10.1016/S0022-328X(00)80564-1
The Rearrangement of the trimethylsilyl group in (trimethylsilyl)pyrazoles
D. O'brien (1971)
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The photoisomerization of 1,4,5-trimethylimidazole and 1,3,5-trimethylpyrazole
P. Beak (1967)
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Pyrazolidine derivatives from the condensation reaction of hydrazobenzene with aliphatic aldehydes
V. Hanuš (1980)
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Enhydrazine, 24. Pyrazolidine durch Cycloadditionen mit dem Azomethin-imin aus 2-(1-Methylhydrazino)maleinsäure-dimethylester
W. Sucrow (1979)
10.1055/S-1979-28663
A New Synthesis of 2-Aryl-3-chloro-2H-indazoles
M. A. Ardakani (1979)
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Bismalondialdehydverbindungen, 2. Mitt.: Darstellung und Reaktionen von Bipyrazolen und Biisoxazolen
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Rates of N-methylation of N-arylpyrazoles
L. Deady (1975)
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The Variable Electronegativity Method. VII. Pyrazole, Its Anion and Cation
R. Brown (1960)
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Pyrazoles. XIII. Lonisation (constants and UV spectra of mono-and dinitropyrazoles †
J. Janssen (1973)
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Untersuchungen über die Lichtstabilität wäßriger Phenazon‐Lösungen
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Pyrazolidine-3,5-diones with heterocyclic substituents. IV. Ionization constants
M. Woodruff (1975)
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Etudes RMN en Serie Heterocyclique—VIII: Effet des Dipivalomethanates de Nickel(II), Cobalt(II), Europium(III) et Praseodyme(III) sur les Deplacements Chimiques de quelques Derives du Pyrazoles†
R. Claramunt (1971)
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Isomerization of 5, 5-dimethylpyrazolines. preparation and properties of 5, 5-dimethyl-Δ1-pyrazoline and 3, 4-dimethyl-Δ2-pyrazoline
B. V. Ioffe (1966)
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Synthesen mit Silber‐bzw. Natrium‐pyrazolen, II. Reaktionen der Silbersalze von Methyl‐pyrazolen mit Halogenen
H. Reimlinger (1970)
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Valence tautomers of heterocyclic aromatic species
E. E. Tamelen (1971)
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Hydrazidoyl Halides in the Synthesis of Heterocycles
A. S. Shawali (1980)
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REDUCTION OF 1-ACYLPYRAZOLINIUM SALTS
L. A. Sviridova (1981)
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Cyclization of 1-thiocarbamoyl-2-phenylpyrazolidines
N. Y. Deeva (1980)
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Carbon‐13 NMR study of some isomeric n‐nitroindazole derivatives
P. Cohen-Fernandes (1982)
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Tentative Assignments of Fundamental Vibrations of Thio- and Selenoamides. VII. 1,2-Dimethyl-3-pyrazolidinethione, a Cyclic Thiohydrazide.
U. Anthoni (1981)
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Substituent effects on proton affinities: through bonds or through space mechanism?
P. C. Srinivasan (1983)
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Pyrazoles. XVIII†. Synthesis of a novel tripyrazolyl by two consecutive cine substitution reactions
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One-pot synthesis of quinaldine derivatives by using microwave irradiation without any solvent — A green chemistry approach
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10.1002/CJOC.20020201121
Preparation of 1,3-Disubstituted-5-cyano-4,5-dihydropyrazoles via 1,3-Dipolar Cycloaddition of Nitrile Imine with Acrylonitrile
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Synthesis of 3‐dialkylaminomethyl‐5‐methyl‐4‐substituted‐1H‐pyrazoles. Selective functionalization of one methyl group via n‐nitration of 3,5‐dimethyl‐4‐substituted‐1H‐pyrazoles
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Visible light catalyzed aromatization of 1,3,5-triaryl-2-pyrazolines by platinum(II) polypyridyl complex under oxidant-free condition
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