Synthesis of quinazolin-4(3 H )-ones and 1,2-dihydroquinazolin-4(3 H )-ones with the aid of a low-valent titanium reagent
作者:Daqing Shi、Liangce Rong、Juxian Wang、Qiya Zhuang、Xiangshan Wang、Hongwen Hu
DOI:10.1016/s0040-4039(03)00449-0
日期:2003.4
A short and facile synthesis of a series of quinazolin-4(3H)-ones and 1,2-dihydroquinazolin-4(3H)-ones was accomplished in good yields via the novel reductive cyclization of o-nitrobenzamides and triethyl orthoformate, aldehydes or ketones promoted by TiCl4/Zn.