Synthesis of 1,2-bisubstituted benzimidazole: 1,3-Shift mechanism catalyzed by acid or base
作者:Ya-Mu Xia、Jia You、Feng-Ke Yang
DOI:10.1002/jhet.531
日期:2011.1
biologically active compounds. An efficient approach for the synthesis of 1,2‐bisubstituted benzimidazoles is presented in this article, and the mechanism of the condensation from 2‐[(2‐aminophenylimino)phenylmethyl]‐4‐bromophenol, using piperdine or acetic acid as catalyst, is studied. 1,3‐Shift of negative hydrogen ion is the key step for this rearrangement reaction, and the influences of catalyst, temperature
苯并咪唑环系统在药物化学中是有用的核,并在许多生物活性化合物中发现。本文提出了一种合成1,2-双取代苯并咪唑的有效方法,并且以哌啶或乙酸为催化剂,由2-[((2-氨基苯基亚氨基)苯基甲基] -4-溴苯酚缩合的机理为:研究过。1,3–负氢离子的转移是该重排反应的关键步骤,并且还研究了催化剂,温度,底物和溶剂的影响。J.杂环化学.2011。