作者:Pengfei Li、Fang Fang、Ji Chen、Jun Wang
DOI:10.1016/j.tetasy.2013.11.012
日期:2014.1
An efficient enantioselective aza-Michael addition of pyrazole to chalcone was established. In the presence of the primary amine derived from cinchona alkaloid and acidic additive, the reactions afforded 1,4-adducts in high yields (up to 98%) with 68-88% ee. (C) 2013 Elsevier Ltd. All rights reserved.