Highly Enantioselective Organocatalytic Michael Addition Reactions of Ketones with Chalcones
作者:Jian Wang、Hao Li、Liansuo Zu、Wei Wang
DOI:10.1002/adsc.200505420
日期:2006.3
A highly enantioselective, organocatalytic Michael addition reaction of unmodified ketones with chalcones has been developed for the first time. The process, catalyzed by (S)-N-(pyrrolidin-2-ylmethyl)-trifluoromethanesulfonamide, affords 1,5-diketones in high yields (73–89%) and with high degrees of enantio- and diastereoselectivity (86–97% ee, >30 : 1 dr).
首次开发了未修饰的酮与查耳酮的高度对映选择性的有机催化迈克尔加成反应。由(S)-N-(吡咯烷基-2-基甲基)-三氟甲磺酰胺催化的过程,可提供高产率(73-89%)且对映和非对映选择性很高(86-97%)的1,5-二酮ee,> 30:1博士)。