Chiral Bifunctional Thiourea-Phosphane Organocatalysts in Asymmetric Allylic Amination of Morita-Baylis-Hillman Acetates
作者:Hong-Ping Deng、Yin Wei、Min Shi
DOI:10.1002/ejoc.201001660
日期:2011.4
A series of new chiralbifunctionalthiourea-phosphane catalysts was synthesized and successfully applied in the catalytic, asymmetricallylicamination of Morita-Baylis-Hillman (MBH) acetates derived from the methyl vinyl ketone (MVK) or ethyl vinyl ketone (EVK) system, with phthalimide, affording the amination products in up to over 99 % yield and 90 % ee for a wide range of substrates derived from
Chiral phosphine-catalyzed regio- and enantioselective allylic amination of Morita–Baylis–Hillman acetates
作者:Guang-Ning Ma、Shu-Hua Cao、Min Shi
DOI:10.1016/j.tetasy.2009.03.040
日期:2009.5
Enantioselective allylic substitution of Morita–Baylis–Hillman (MBH) acetates with phthalimide was realized in the presence of a novel l-proline-derived chiral trifunctional phosphine amide ligand to give the corresponding allylicamination adducts in good yields (70–95%) and in modest to good enantioselectivities (34–78% ee’s).