Aerobic oxidation of thiols is efficiently catalyzed by diaryl tellurides such as bis(4-methoxyphenyl) telluride under photosensitized conditions to give the corresponding disulfides in good to excellent yields. In this catalytic system, the tellurone oligomer, produced by the reaction of a telluride with singlet oxygen, is assumed to be the active species and is capable of oxidizing 4 equiv of a thiol
Hydrotalcite is an efficient catalyst for air oxidation of a variety of aromatic, aliphatic and alicyclic thiols in hexane, affording the corresponding disulfides in excellent to quantitative yields under mild and neutral conditions.
Simple and Selective Oxidation of Thiols to Disulfides with Dimethylsulfoxide Catalyzed by Dichlorodioxomolybdenum(VI)
作者:Roberto Sanz、Rafael Aguado、María R. Pedrosa、Francisco J. Arnáiz
DOI:10.1055/s-2002-28520
日期:——
Selective and quantitative conversion of thiols to disulfides was effected by dimethyl sulfoxide under mild conditions catalyzed by dichlorodioxomolybdenum(VI).
在二氯二氧钼 (VI) 催化的温和条件下,二甲亚砜可将硫醇选择性和定量地转化为二硫化物。
Alumina: an Efficient and Reusable Catalyst for the Oxidative Coupling of Thiols with DMSO
An inexpensive combination of common laboratory reagents, dimethyl sulfoxide (DMSO) and chromatographic neutral alumina, gives an efficient, selective, and high-yielding oxidation of aromatic, aliphatic and alicyclic thiols to the corresponding disulfides in excellent yields under relatively mild conditions.