A short and facile synthesis of a series of quinazolines and imidazo[1,2-c]quinazolines was accomplished in good yields via the novel reductive cyclization of 2-nitrobenzyl amines or 2-(2-nitrophenyl)imidazoles with ortho-ester, aldehydes or ketones promoted by TiCl4/Zn system. The structures were established by spectroscopic data and confirmed by X-ray analysis.
通过TiCl4/Zn体系促进的2-硝基
苄胺或2-(2-
硝基苯基)
咪唑与邻酯、醛或酮的创新还原环化反应,实现了一系列
喹唑啉和
咪唑[1,2-c]
喹唑啉的简便合成,产率良好。通过光谱数据确定了结构,并通过X射线分析进行了确认。