Synthesis of a new polyheterocyclic system - Pyrazolo[5′,1′:2, 3]pyrimido[1,6-a]benzimidazole

被引：0

作者：

Dzvinchuk I.B. ^{[1
]}

Lozinskii M.O. ^{[1
]}

机构：

[1] Institute of Organic Chemistry, Ukraine National Academy of Sciences

来源：

Chemistry of Heterocyclic Compounds | 2005年 / 41卷 / 11期

关键词：

Acylation; Benzimidazoles; Cyclocondensation; Hydrazones; Pyrimidines; Recyclization; Trifluoroacetyl anhydride;

D O I：

10.1007/s10593-006-0012-7

中图分类号：

学科分类号：

摘要：

Cyanoethylhydrazones of 2-aroylmethyl-1H-benzimidazoles undergo recyclization on reaction with trifluoroacetyl anhydride to give 3-aryl-1-cyanoethyl-5-(2-trfluoroacetaminoanilino)pyrazoles. The recyclization products may be cyclized with closing of the benzimidazole ring in two ways: with formation of 1-(5-pyrazolyl)benzimidazoles or 5,6-dihydroderivatives of a new polyheterocyclic system - pyrazolo[5′,1′:2,3]pyrimido[1,6-a] benzimidazole. ©2005 Springer Science+Business Media, Inc.

引用

页码：1419 / 1423

页数：4

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