The regioselective synthesis of benzo[4,5]imidazo[2,1-b]thiazole derivatives via amination (C–N) and intramolecular cyclization (C–S) reactions in the presence of molecular iodine has been reported. This method is base and metal free and features inexpensive catalysts, with a simple procedure and a short reaction time.
据报道,在分子碘存在下,通过胺化(C-N)和分子内环化(C-S)反应,可以区域选择性地合成苯并[4,5]咪唑并[2,1-b]噻唑衍生物。该方法不含碱和金属,催化剂价格低廉,操作简单,反应时间短。