Synthesis of α-Keto Esters and Amides via Oxidative Cleavage of Cyanoketophosphoranes by Dimethyldioxirane
作者:Man-Kin Wong、Chun-Wing Yu、Wai-Hung Yuen、Dan Yang
DOI:10.1021/jo0015974
日期:2001.5.1
Regioselective Intramolecular Oxidation of Phenols and Anisoles by Dioxiranes Generated in Situ
作者:Dan Yang、Man-Kin Wong、Zheng Yan
DOI:10.1021/jo000458j
日期:2000.6.1
and H(2)O, oxidation of phenol derivatives 1-10 afforded spiro 2-hydroxydienones in 24-55% yields regardless of the presence of other substituents (ortho Me, meta Me or Br) on the aryl ring and the length of the linker. Experimental evidences were provided to support the mechanism that involves a regioselective pi bond epoxidation of aryl rings followed by epoxide rearrangement and hemiketal formation