Electrochemical oxidation of 4-tert-butylcatechol (1) has been studied in the presence of benzenesulfinic acids (2a and 2b) as nucleophiles in aqueous solution, using cyclic voltammetry and controlled-potential coulometry. The results indicate that the quinone derived from 4-tert-butylcatechol (1) participates in Michael addition reaction with 2 of form the corresponding arylsulfonylbenzenediols (3a and 3b). The electrochemical synthesis of 3a and 3b has been successfully performed at carbon rod electrodoes in an undivided cell in good yield and purity.
Diaryl Sulfones Through Oxidative Coupling of Catechols and Arylsulfinic Acids
作者:D. Nematollahi、D. Habibi、A. Alizadeh
DOI:10.1080/10426500500327089
日期:2006.7.1
A simple and efficient method for the synthesis of diarylsulfones using the coupling reaction of in-situ generated o-benzoquinones, promoted by potassium ferricyanide, and arylsulfinic acids has been developed. High product yields, a short reaction time, and mild reaction conditions are important features of this method.