Benzoxazolinones. IV. Reaction of benzoxazolinone and benzoxazolinethione with alkyl β-chlorovinyl ketones
作者:R. G. Aflyatunova、N. A. Aliev、Ch. Sh. Kadyrov、M. R. Yagudaev
DOI:10.1007/bf00575713
日期:1983.7
The reactions of benzoxazolinone and benzoxazolinethione with alkyl β-chlorovinylketones have been studied. The reaction products are N-(β-acylvinyl)benzoxazolinones and N-(β-acylvinyl)benzoxazolinethiones. The reaction of alkali-metal salts of benzoxazolinone with alkyl β-chlorovinylketones leads to the opening of the oxazolinone ring. The structures of the compounds synthesized have been studied
HYPNOTICS AND ANTICONVULSANTS. II. HALOGENATED TERTIARY ACETYLENIC CARBINOLS
作者:W. M. McLAMORE、S. Y. P'AN、A. BAVLEY
DOI:10.1021/jo01119a018
日期:1955.1
Belyaev,V.F., Journal of general chemistry of the USSR, 1963, vol. 33, p. 3019 - 3021
作者:Belyaev,V.F.
DOI:——
日期:——
Distinguishing Features of reactions of 2-chloro-and 2,2-dichloro(bromo)vinyl ketones with alkyl-and arylhydrazines
作者:G. V. Bozhenkov、V. A. Savosik、L. I. Larina、L. V. Klyba、E. R. Zhanchipova、A. N. Mirskova、G. G. Levkovskaya
DOI:10.1134/s1070428008070129
日期:2008.7
2-Chlorovinyl alkyl ketones react with alkylhydrazines to give mixtures of 1-R-3-R'- and 1-R-5-R'-pyrazoles: The 1-R-3-R'-pyrazoles form through the heterocyclization of 2-chlorovinyl ketone alkylhydrazones whereas in the heterocyclization into 1-R-5-R'-pyrazoles N1-alkyl-N2-(2-acylvinyl) hydrazines are involved. The regiospecific heterocyclization of 2-chloro- and 2,2-dichlorovinyl ketones with arylhydrazines and also of 2,2-dichloro(bromo) vinyl trifluoromethyl ketones with C alkylhydrazines into pyrazoles and 5-chloro(bromo)pyrazoles proceeds through a stage of haloenones hydrazones formation. The study of the structure of the obtained 1-alkyl-3(5)-alkylpyrazoles by means of two-dimenaional H-1 and C-13 NMR spectroscopy and GC-MS method made it possible to assign the proton and carbon signals of isomeric pyrazoles and to establish the diagnostic ions for the pair of 1,3- and 1,5-isomers.
Zbiral,E.; Werner,E., Justus Liebigs Annalen der Chemie, 1967, vol. 707, p. 130 - 140