Catalytic Asymmetric β-C–H Functionalizations of Ketones via Enamine Oxidation
作者:Lihui Zhu、Long Zhang、Sanzhong Luo
DOI:10.1021/acs.orglett.8b00508
日期:2018.3.16
A chiral primary amine catalyzed oxidative β-C–H functionalization of ketone is described. The reaction proceeds via ketone enamine oxidation by IBX and enables highly enantioselective remote C–H functionalization of both cyclic and acyclic ketones, generating chiral ketones bearing β-stereocenters.
Organocatalytic Enantioselective aza-Michael Additions of N-Heterocycles to α,β-Unsaturated Enones
作者:Jian Lv、Hao Wu、Yongmei Wang
DOI:10.1002/ejoc.200901227
日期:2010.4
A procedure for enantioselectiveorganocatalytic conjugate additions of a variety of N-heterocycles to α,β-unsaturated enone systems is presented. The reactions are efficiently catalyzed by salts of 9-amino-9-deoxy-epiquinine (3d). Cyclic, acyclic, and aromatic enones can be used in reactions with 1H-benzotriazole (1a) or 5-phenyltetrazole derivatives 12, providing the Michael addition products in