The oxidative coupling reaction between hydroquinone or catechols and various sodiumbenzenesulfinates was investigated using the laccase from Trametes versicolor, in the presence of O2 in a phosphate buffer solution at room temperature to afford sulfonyl benzenediols in 75–95% yield.
Electrochemical synthesis of p-tolylsulfonylbenzenediols
作者:Davood Nematollahi、Ramazanali Rahchamani
DOI:10.1016/s0040-4039(01)02050-0
日期:2002.1
The electrochemical synthesis of p-tolylsulfonylbenzenediols (4a–c) by anodic oxidation of catechols (1a–c) in the presence of 4-toluene sulfinicacid (3) is described. Products were obtained in an undivided cell in good yields and purity. The mechanism of oxidation has been studied in aqueous solution using cyclic voltammetry and controlled-potential coulometry.
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.