Synthesis and X-ray crystal structure of pyrrolo[1,2-a]benzimidazoles

被引：13

作者：

Awadallah, Adel M.

Seppelt, Konrad

Shorafa, Hashem

机构：

[1] Islam Univ, Fac Sci, Dept Chem, Gaza, Palestine, Israel

[2] Free Univ Berlin, Inst Chem, D-14195 Berlin, Germany

来源：

TETRAHEDRON | 2006年 / 62卷 / 33期

关键词：

nitrilimines; 2-cyanomethylbenzimidazole; 2-aminobenzimidazole; pyrrolo[1,2-alpha]benzimidazole;

D O I：

10.1016/j.tet.2006.05.071

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Reaction of nitrilimines 1 with 2-cyanomethylbenzimidazole 2 gave the 3-arylazo-2-methylpyrrolo[1,2-a]benzimidazole 4a rather than the reported 2-arylazo-3-methylpyrrolo[1,2-a]benzimidazole 3a. The correct structure of the product was determined using X-ray crystal structure analysis. The similar reaction of nitrilimines with 2-aminobenzimidazole 5 gave the acyclic nucleophilic addition product 6. (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：7744 / 7746

页数：3

共 11 条

[1]

[Anonymous], 1996, MERCK INDEX

[2]

ELABADELAH MM, 2004, HETEROCYCLES, V10, P1879

[3] A facile synthesis of pyrrolo[1,2-a]benzimidazoles and pyrazolo[3,4:4′,3′]pyrrolo[1,2-a]benzimidazole derivatives [J].