Reaction of 2-Aminobenzimidazoles with Acetylene in the KOBut/DMSO System. Self-Assembly of Benzo[d]imidazo[1,2-a]imidazoles and Benzo[4,5]imidazo[1,2-a]pyrimidines under Competition between Nucleophilic Centers
作者:N. V. Semenova、I. A. Ushakov、E. Yu. Schmidt、B. A. Trofimov
DOI:10.1134/s1070428024020192
日期:2024.2
Abstract 2-Aminobenzimidazoles react with acetylene in the KOBut/DMSO superbase system (80°C, 20 min) to give benzimidazo[1,2-a]imidazoles and benzimidazo[1,2-a]pyrimidines formed by the self-assembly of the starting compounds with two or three molecules of acetylene. Vinyl derivatives of 1,3-dihydro-2H-benz[d]imidazole-2-imine were also isolated.
摘要 2-氨基苯并咪唑与乙炔在 KOBu t /DMSO 超碱体系(80°C,20 分钟)中反应,通过自组装形成苯并咪唑并[1,2- a ]咪唑和苯并咪唑[1,2- a ]嘧啶具有两个或三个乙炔分子的起始化合物。还分离了1,3-二氢-2H-苯并[ d ]咪唑-2-亚胺的乙烯基衍生物。