Reaction of 2-Aminobenzimidazoles with Acetylene in the KOBu^t/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

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发表日期：

2024年2月1日

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N. V. Semenova,
I. A. Ushakov,
E. Yu. Schmidt,
B. A. Trofimov

摘要

Abstract

2-Aminobenzimidazoles react with acetylene in the KOBu^t/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.

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

摘要

Reaction of 2-Aminobenzimidazoles with Acetylene in the KOBu^t/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