Results 261 to 270 of about 38,574 (278)

A vibrational assignment for pyrazole

Journal of the Chemical Society B: Physical Organic, 1967
Infrared spectra of pyrazole in the vapour and solid states and in solution are reported and discussed. From these, and by comparison with the spectra of N-deuterio-, 3-methyl-, and 3,5-dimethyl-pyrazole, and other simple five-membered heterocycles, a vibrational assignment is proposed.
ZECCHINA, Adriano, Cerruti L., COLUCCIA, Salvatore, Borello E.   +3 more
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Enamines in Heterocyclic Synthesis: A Route to 4‐Substituted Pyrazoles and Condensed Pyrazoles.

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Mohamed Hilmy Elnagdi, Hamdi M. Hassaneen, Huwaida M. E. Hassaneen   +2 more
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ChemInform Abstract: SYNTHESIS OF PYRAZOLE AND PYRAZOLE(4,3‐D)PYRIMIDONE DERIVATIVES. I

Chemischer Informationsdienst, 1983
AbstractDie Pyrazol‐eurbonsiitire (I) rezigiert mit "lhionylehkiritl zum Diketopiperuzin (II), das mit Aminen (III) zu Pyrazol‐earbonsiiureamitlen (IV) gespalten) werden kann.
BARALDI, Pier Giovanni, VICENTINI, Chiara Beatrice, SIMONI D., GUARNERI M.   +3 more
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Ring-fluorinated pyrazoles

Journal of Fluorine Chemistry, 1992
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Joseph C. Sloop, Carl L. Bumgardner
openaire   +3 more sources

Synthesis and Antimycobacterial Evaluation of Novel Pyrazole‐Isoxazolines and Pyrazole‐Isoxazoles

ChemBioChem
AbstractThis study reports the synthesis of a new series of pyrazole‐isoxazolines, at very good yields, from the cyclocondensation reaction of pyrazole‐enaminones with hydroxylamine hydrochloride. Dehydration of the pyrazole‐isoxazolines furnished another new series of the respective pyrazole‐isoxazoles, at excellent yields. Both series of the obtained
Paulo A. Moraes, Thaise Dill Fussinger, Tuyla Fontana, Genilson S. Pereira, Mário A. Marangoni, Adriano F. Camargo, Helio G. Bonacorso, Marcos A. P. Martins, Alencar K. Machado, Marli M. A. de Campos, Nilo Zanatta   +10 more
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The Selective Synthesis of Pyrazoles

HETEROCYCLES, 1984
AbstractDie Ethoxy‐enone (II) reagieren mit Phenylhydrazin (I) zu den Pyrazolen (III) und (IV), wobei unter neutralen Bedingungen (III) und sonst (IV) das Hauptprodukt ist.
Nobutoshi Yoshiwara, Choji Kashima
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Progress in Pyrazole Chemistry

1966
Publisher Summary This chapter discusses the use of pyrazole as antioxidants in motor fuels, medicine, and development of cine-film. Besides the traditional interest in pyrazole derivatives which have been the basis of numerous dyes and drugs, a number of pyrazole anesthetics have appeared.
A.N. Kost, I.I. Grandberg
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ChemInform Abstract: Organometallic Complexes of Pyrazoles.

ChemInform, 2001
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
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The Direct Carboxylation of Pyrazoles

Synthesis, 1986
AbstractThe pyrazole‐4‐carboxylic acids (III) are prepared by reacting the pyrazoles (I) with excess oxalyl chloride, followed by hydrolysis.
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Pyrazoles VII: nitration of 1,4-disubstituted pyrazoles

Tetrahedron Letters, 1970
Pauline Cohen-Fernandes, Clarisse L. Habraken, K.C. van Erk, S. Balian   +3 more
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