SYNTHESIS OF POLYAZAHETEROCYCLES BY MICHAEL ADDITION OF CH ACIDS TO ALPHA,BETA-UNSATURATED NITRILES - SYNTHESIS OF PYRIDO[1,2-A]BENZIMIDAZOLE AND PYRIMIDO[5',4'/5,6]PYRIDO[1,2-A]BENZIMIDAZOLE DERIVATIVES

被引：20

作者：

BOGDANOWICZSZWED, K

CZARNY, A

机构：

[1] Jagiellonian University, Department of Organic Chemistry, Kraków

来源：

JOURNAL FUR PRAKTISCHE CHEMIE-CHEMIKER-ZEITUNG | 1993年 / 335卷 / 03期

关键词：

D O I：

10.1002/prac.19933350311

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Addition of 1H-benzimidazole-2-carbonitrile (1) to arylidenemalononitrile (2) gave 1-amino-3-aryl pyrido[1,2-a]benzimidazole-2,4-dicarbonitrile (3), 2-aryl-benzimidazole (4) and 1H-benzimidazole-2-acetonitrile, alpha-(arylmethylene) (5). Compounds (3) reacted with formamide yielding 4-amino-5-aryl pyrimido[5',4': 5,6]pyrido[1,2-a]benzimidazole (6).

引用

页码：279 / 282

页数：4

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