Selective oxidation of hydroxy groups of phenylthio and phenylseleno alcohols
作者:Makoto Shimizu、Hirokazu Urabe、Isao Kuwajima
DOI:10.1016/s0040-4039(01)90493-9
日期:1981.1
Various kinds of alcohols bearing phenylthio or phenylseleno moiety were converted into the corresponding carbonyl compounds in good to excellent yields by treating with dimesityl diselenide and -butyl hydroperoxide.
alpha -Lithiated 1-[(2-methoxyethoxy)methoxy]-2-(phenylsylfinyl)cyclopropane reacted smoothly with alkylating agents to afford the corresponding alpha -alkylated cyclopropylsulfoxides, which underwent the Pummerer-type reaction mediated ring-opening at low temperature (-78 degreesC) by employing TFAA/(Pr2NEt)-N-i/CH2Cl2 to give mixtures of beta-(phenylthio)-alpha,beta- and gamma,delta -unsaturated aldehydes. (C) 2001 Elsevier Science Ltd. All rights reserved.