A cooperative photoredox and asymmetriccatalysis for the enantioselective aerobic oxidative C(sp3)–H olefination of tetrahydro-β-carbolines (THCs) is reported. This method, which is also effective for tetrahydroisoquinolines (THIQs), features a triple-catalyst strategy, involving a dicyanopyrazine-derived chromophore (DPZ) as the metal-free photoredox catalyst, a chiral Lewis base catalyst, and an
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.