An alternative green protocol and step economy for the synthesis of quinazoline has been developed. The reaction of readily available 2-aminobenzonitriles with various organometallic reagents led to ortho-aminoaryl N-H ketimine species. The subsequent base catalysed N-C bond formation with various isothiocyanates afforded quinazoline scaffolds in aqueous medium. The salient features of this protocol
已经开发了用于合成
喹唑啉的替代绿色方案和步骤经济性。容易获得的2-
氨基
苄腈与各种有机
金属试剂的反应产生了邻
氨基芳基NH酮
亚胺。随后的碱与各种异
硫氰酸酯催化的NC键形成在
水性介质中提供了
喹唑啉支架。该协议的显着特征是使用容易获得的廉价前体,
水作为绿色环保的溶剂,反应时间短,操作简便,后处理程序容易和官能团耐受性好。