Journal of the Chinese Chemical Society

New Synthesis of Pyrazolo [3, 4??b][1, 4, 5] benzothiadiazepine,??[1, 4, 5] benzoxadiazepine,??[1, 4, 5] benzotriazepine and Pyrazolo [3, 4??b] quinoxaline Derivatives

EA El??Rady

Index: El-Rady, Eman A. Journal of the Chinese Chemical Society, 2004 , vol. 51, # 4 p. 859 - 862

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Citation Number: 3

Abstract

Abstract New pyrazolo [3, 4-b][1, 4, 5] benzothiadiazepine and its analogues 3 have been obtained by reaction of 4-nitrosopyrazoles 1 with 2-aminothiophenol 2a and its analogues 2b, c. Under fused conditions, dipyrazolyl derivatives 7a was obtained with a trace amount of quinoxaline 5a. On the other hand, 5b and 7b were obtained in equal amounts. A proposed pathway is presented.

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