Electrochemical Oxidative Cross‐Coupling Reaction to Access Unsymmetrical Thiosulfonates and Selenosulfonates
作者:Xiaofeng Zhang、Ting Cui、Yanghao Zhang、Weijin Gu、Ping Liu、Peipei Sun
DOI:10.1002/adsc.201900047
日期:2019.4.23
The electrochemical oxidativecross‐dehydrogenativecoupling of arylsulfinic acids with thiophenols was achieved via a radical process. A wide range of arylsulfinic acids and substituted thiophenols were found to be tolerated, providing unsymmetrical thiosulfonates in good to excellent yields. This electrochemical method can also be used for the reaction of arylsulfinic acids with disulfides or diselenides
Metal‐Free Synthesis of Thiosulfonates via Insertion of Sulfur Dioxide
作者:Guoqing Li、Ziyu Gan、Kexin Kong、Xiaomeng Dou、Daoshan Yang
DOI:10.1002/adsc.201900157
日期:2019.4.16
A simple and catalyst‐free strategy was developed for the synthesis of unsymmetrical thiosulfonates using readily available DABCO⋅(SO2)2 as a solid and bench‐stable sulfur dioxide surrogate. The corresponding thiosulfonates were obtained through a radical pathway with good functional group tolerance. This strategy offers a promising synthesis method for the construction of diverse and useful thiosulfonates
Thiosulfonates were prepared by the iodine oxidative sulfenylation of sulfinates with various disulfides in good yields both in the presence and absence of solvent. One of the important biological applications of sulfenylation is the reaction of cyclic disulfides.
Under solvent-free conditions, various unsymmetrical benzoyldisulfides and symmetrical novel biscarbonyldisulfides were easily prepared in good yields at room temperature by the mixing of thiosulfonates with thiocarboxylic S-acids in the absence or presence of an amine.