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Communication | Regular issue | Vol 3, No. 7, 1975, pp.543-546
Published online, 1st January, 1970
DOI: 10.3987/R-1975-07-0543
1,4-Addition Reactions of 4-(m-Nitrobenzylidene)-3,5-dimethylisopyrazole

Takushi Kurihara,* Emi Araya, and Toshiko Sakaguchi

*Faculty of Pharmaceutical Science, Osaka University of Pharmaceutical Sciences, 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan

Abstract

Reactions of 4-(m-nitrobenzylidene)-3,5-dimethylisopyrazole (II) with hydrochloric acid in methanol, acetic anhydride, acetic acid, benzoyl chloride and dimethyl sulfate gave the 1,4-addition products (III, IV, V, VIII, and IX) in fairly good yields.