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Communication | Regular issue | Vol 20, No. 10, 1983, pp.1913-1916
Published online, 1st January, 1970
DOI: 10.3987/R-1983-10-1913
Synthesis of 4H-Pyrazolo[1,5-a][1,3]diazepine

Takushi Kurihara, Eiji Kawasaki, and Keiko Nasu

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

Abstract

6-Acetyl-8-ethoxycarbonyl-4H-pyrazolo[1,5-a][1,3]diazepine-3-carbonitrile (5) was synthesized by treatment of 2 with silicic acid.