Highly Enantioselective Construction of a Quaternary Carbon Center of Dihydroquinazoline by Asymmetric Mannich Reaction and Chiral Recognition
作者:Biao Jiang、Jia Jia Dong、Yu Gui Si、Xiao Long Zhao、Zuo Gang Huang、Min Xu
DOI:10.1002/adsc.200800039
日期:2008.6.9
The highly enantioselective construction of a quaternary carbon center of dihydroquinazoline by an asymmetric Mannich reaction and chiral recognition are described. The key transformation was to establish the chiral trifluoromethyl quaternary carbon center by a diamine-Brønsted acid-catalyzed enantioselective and regioselective Mannich reaction of a methyl ketone and 4-trifluoromethyldihydroquinazoline