Perfluorobutanesulfonamide organocatalyst 4 efficiently promotes asymmetric conjugateadditions of malonates to α,β-unsaturated ketones to afford the corresponding adducts with excellent enantiosel...
Simple chiral sulfonamide primary amine catalysed highly enantioselective Michael addition of malonates to enones
作者:Chunhua Luo、Yu Jin、Da-Ming Du
DOI:10.1039/c2ob07191f
日期:——
A chiral sulfonamide primary amine-organocatalysed, highly enantioselective Michael addition of malonates to enones has been developed. This reaction afforded the corresponding products in excellent yields (up to 99%) and excellent enantioselectivity (up to 99% ee).
Perfluoroalkanesulfonamide organocatalyst 7 efficiently promotes asymmetric Michael additions of malonates to enones in cyclohexane or water to produce the corresponding addition products with excellent yields and with up to 99% ee. (C) 2014 Elsevier Ltd. All rights reserved.