title: An efficient Rh/O2 catalytic system for oxidative C-H activation/annulation: evidence for Rh(I) to Rh(III) oxidation by molecular oxygen.
abstract: A novel and efficient Rh/O2 catalytic system has been developed and shown to catalyze highly efficient oxidative C-H activation/annulation reactions, producing a broad range of isoquinolinium salts with high turnover numbers (up to 740). Mechanistic studies provided strong evidence of facile oxidation of Rh(I) to Rh(III) by molecular oxygen facilitated by acid.
authors.affiliation: State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China.
authors.forename: Guoying
authors.initials: G
authors.lastname: Zhang
authors.forename: Lei
authors.initials: L
authors.lastname: Yang
authors.forename: Yanyu
authors.initials: Y
authors.lastname: Wang
authors.forename: Yinjun
authors.initials: Y
authors.lastname: Xie
authors.forename: Hanmin
authors.initials: H
authors.lastname: Huang