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
Schmidt,U.; Geiger,F., Justus Liebigs Annalen der Chemie, 1963, vol. 664, p. 168 - 188
作者:Schmidt,U.、Geiger,F.
DOI:——
日期:——
Belyaev,V.F.; Kozlyak,R.I., Journal of Organic Chemistry USSR (English Translation), 1969, vol. 5, p. 714 - 716
作者:Belyaev,V.F.、Kozlyak,R.I.
DOI:——
日期:——
Synthesis and structure of 1-tert-butyl-substituted 3(5)-alkylpyrazoles from 2-chlorovinyl ketones
作者:V. A. Kobelevskaya、L. I. Larina、A. V. Popov、E. V. Rudyakova、G. G. Levkovskaya
DOI:10.1134/s1070428015020177
日期:2015.2
Reactions of alkyl, halomethyl 2-chlorovinyl ketones with tert-butylhydrazine in the presence of triethylamine afford unsymmetrical 1-(tert-butyl)-3- and -5-disubstituted pyrazoles. The reaction direction is governed by the ketone ability of the nucleophilic substitution of chlorine and of the dehydrochlorination leading to acetylene ketones. 2-Chlorovinyl ketones react with tert-butylhydrazine along two routes giving mixtures of 1-(tert-butyl)-3- and -5-alkylpyrazoles. The content of 3-alkyl-1-(tert-butyl)pyrazole in the formed isomers mixture grows up to 73% with growing length of the alkyl chain of the ketone and up to 87 and 94% at introducing halogen atom in the alkyl fragment of the chloroenone.