Enantioselective Metal/Organo-Catalyzed Aerobic Oxidative sp<sup>3</sup>C–H Olefination of Tertiary Amines Using Molecular Oxygen as the Sole Oxidant
作者:Gen Zhang、Yunxia Ma、Shoulei Wang、Yaohu Zhang、Rui Wang
DOI:10.1021/ja303333k
日期:2012.8.1
An organocatalysis/copper-catalyzed asymmetric oxidative sp(3) C-H olefination reaction of tertiary amines with olefins usingmolecularoxygen as the sole oxidant under mild conditions was realized for the first time. This novel strategy provides an efficient and environmentally friendly way to access diversify optically active C(1)-alkene tetrahydroisoquinoline derivatives.
An electrochemically-driven organocatalytic enantioselective oxidative coupling of tetrahydroisoquinolines and acrylaldehyde was developed. Various chiral C1-alkenyl tetrahydroisoquinolinesderivatives were obtained with 69–86% yields and 93:7–96:4 er. Notable features of this reaction include asymmetric organocatalysis (5.0 mol% β-ICD as catalyst), electricity as the oxidant, air atmosphere, and undivided