Photoinduced umpolung addition of carbonyl compounds with α,β-unsaturated esters enables the polysubstituted γ-lactone formation
作者:Jia-Yi Gu、Wei Zhang、Seth R. Jackson、Yan-Hong He、Zhi Guan
DOI:10.1039/d0cc05306f
日期:——
herein report the photoinduced intermolecular umpolung addition of aromaticketones/aldehydes with α,β-unsaturated esters via ketyl radical intermediates. Following an intramolecular transesterification, a variety of γ-lactone derivatives are readily accessed. Mechanistic investigations demonstrate the significant role of Hantzsch ester, which serves both as the electron and proton donor.