One-pot oxidative Groebke–Blackburn–Bienayme reaction of alcohols: using bio-supported and magnetically recyclable Fe2O3@cellulose and Fe2O3@cellulose–SO3H nanocomposites for the synthesis of 3-aminoimidazo[1,2-a]pyridines
reaction has been successfully developed with primary alcohols instead of their corresponding aldehydes in the presence of recyclable Fe2O3@cellulose and Fe2O3@cellulose–SO3H catalysts. In this work, an efficient protocol for the oxidative synthesis of 3-aminoimidazo[1,2-a]pyridines via an alcohol, 2-aminopyridine, and an isocyanide in excellent yields in the presence of a catalytic amount of Fe2O3@cellulose
摘要在可循环使用的Fe 2 O 3纤维素和Fe 2 O 3纤维素-SO 3 H催化剂的存在下,已经成功地开发出了伯醇一锅式氧化Groebke–Blackburn–Bienayme三组分反应,而不是其相应的醛。在这项工作中,3-氨基咪唑的氧化合成的有效协议[1,2一]吡啶通过醇,2-氨基吡啶,并以优良产率以Fe催化量的存在下,胩2 ö 3 @纤维素或Fe 2 O 3 @纤维素–SO 3描述了H作为可磁回收的非均相催化剂。反应后处理很简单,催化剂可以很容易地从反应介质中磁性分离出来,并在随后的反应中重新使用。 图形概要