Photochemical Reactions 127th CommunicationPhotochemistry of Epoxy-enones: Intramolecular Trapping of a Carbonyl Ylide
作者:Shigeru Ohta、Bruno Frei、Oskar Jeger
DOI:10.1002/hlca.19820650802
日期:1982.12.15
δ-epoxy ketones undergoing primarily C(γ), O-cleavage of the oxiran. However, 1π, π*-excitation of (E)−4 leads to enol ether 10 which is formed by intramolecular insertion of the hydroxyl group of the ylide c.
在1 n,π*激发下,6-环氧-2-羟基-5,6-二氢-β-紫罗兰酮((E)-4)显示a,β-不饱和γ,δ-环氧酮的典型行为主要经历Oxiran的C(γ),O裂解。然而,1个π,π* -excitation(的ë) - 4所导致烯醇醚10,其是由羟基的内鎓盐的分子内插入形成Ç。