Efficient Room-Temperature One-Pot Synthesis of 2-Amino-3-alkyl(3-aryl)quinazolin-4(3H)-ones
作者:Cédric Lecoutey、Christine Fossey、Sylvain Rault、Frédéric Fabis
DOI:10.1002/ejoc.201100200
日期:2011.5
the one-pot successive addition of ethoxycarbonylisothiocyanate, alkyl- or arylamines, and the coupling reagent EDCI led to the clean, room-temperature formation of carbamate-protected 2-amino-3-alkyl(3-aryl)quinazolin-4(3H)-ones in up to 93 % yield. This method provides a practical alternative to previously reported procedures for the synthesis of 2-amino-3-substituted quinazolin-4(3H)-ones.
从邻氨基苯甲酸酯开始,一锅连续加入乙氧基羰基异硫氰酸酯、烷基胺或芳基胺和偶联剂 EDCI 导致在室温下清洁、室温形成氨基甲酸酯保护的 2-氨基-3-烷基(3-芳基)喹唑啉- 4(3H)-ones 的产率高达 93%。该方法为先前报道的合成 2-氨基-3-取代喹唑啉-4(3H)-ones 的程序提供了一种实用的替代方法。