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Communication | Regular issue | Vol 3, No. 8, 1975, pp.633-637
Published online, 1st January, 1970
DOI: 10.3987/R-1975-08-0633
Reaction of m-Nitrobenzylideneacetylacetone with Phenyl- and Methylhydrazines

Takushi Kurihara,* Toshiko Sakaguchi, and Hiroshi Hirano

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

Abstract

Reaction of m-nitrobenzylideneacetylacetone with phenyl- and methylhydrazine in aqueous acetonitrile, methanol, and glacial acetic acid afforded 4-(α-hydroxy-, methoxy-, and acetoxy-m-nitrobenzyl)-3,5-dimethyl-1-phenylpyrazoles (Va-VIIa) and the corresponding 1-methyl derivatives (Vb-VIIb), presumably via the pseudo-bases (III), in excellent yields.