title: A unique 1,2-acyl migration for the construction of quaternary carbon by visible light irradiation of platinum(II) polypyridyl complex and molecular oxygen.
abstract: A unique 1,2-acyl migration for the construction of quaternary carbon in a one-pot reaction under visible light is described. By irradiating a platinum(II) polypyridyl complex with visible light, enamine 1 is able to react with alcohol 2 to yield compound 3 featuring a quaternary carbon via 1,2-acyl migration and concurrent esterification. Studies on the mechanism reveal that the platinum(II) complex is able to generate singlet oxygen ((1)O2) that is responsible for this unprecedented intramolecular 1,2-acyl migration transformation.
authors.affiliation: Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences , Beijing 100190, P. R. China.
authors.forename: Qing-Yuan
authors.initials: QY
authors.lastname: Meng
authors.forename: Tao
authors.initials: T
authors.lastname: Lei
authors.forename: Lei-Min
authors.initials: LM
authors.lastname: Zhao
authors.forename: Cheng-Juan
authors.initials: CJ
authors.lastname: Wu
authors.forename: Jian-Ji
authors.initials: JJ
authors.lastname: Zhong
authors.forename: Xue-Wang
authors.initials: XW
authors.lastname: Gao
authors.forename: Chen-Ho
authors.initials: CH
authors.lastname: Tung
authors.forename: Li-Zhu
authors.initials: LZ
authors.lastname: Wu