A method for the electrochemical synthesis of sulfinic esters by aerobicoxidative coupling of thiophenols and alcohols has been developed. Using electrons as the redox reagent and O2 in air as the oxygen source, the reactions proceeded smoothly at room temperature, even for a gram-scale preparation. No use of catalyst, clean redox reagent, green and abundant oxygen source, and mild reaction conditions
Efficient electrosynthesis of sulfinic esters via oxidative cross‐coupling between alcohols and thiophenols
作者:Fengping Gong、Fangling Lu、Lin Zuo、Qi Wang、Ru Li、Jiaxin Hu、Zhen Li、Abdelilah Takfaoui、Aiwen Lei
DOI:10.1002/jccs.201900246
日期:2020.2
A new protocol for SO bond formation was developed by electrochemical oxidative cross‐coupling between alcohols and thiophenols. With this strategy, a series of valuable sulfinicester derivatives were synthesized up to 96% yield from basic starting materials. A preliminary mechanistic investigation reveals that this reaction involves oxygen reduction reaction (ORR).
Copper-Catalyzed Aerobic Oxidative Reaction of Sulfonyl Hydrazides with Alcohols: An Easy Access to Sulfinates
作者:Bingnan Du、Zan Li、Ping Qian、Jianlin Han、Yi Pan
DOI:10.1002/asia.201501262
日期:2016.2
A Cu‐catalyzed aerobicoxidativereaction between sulfonylhydrazides and alcohols has been developed. In this reaction, sulfonylhydrazides act as the sulfinic acid precursors to react with alcohols, resulting in sulfinic esters with up to 72 % yield. This catalytic system tolerates a wide range of sulfonylhydrazide substrates, and represents a new strategy for the transformation of readily available
Here, we developed a new cobalt nanocatalyst supported on N–SiO2-doped activated carbon (Co/N–SiO2–AC), which exhibits excellent catalytic performance towards the oxidative esterification of (hetero)aryl and alkyl thiols with alcohols. A wide array of sulfinic esters were efficiently afforded in an exclusive chemoselective manner. The developed synthetic method proceeds with the merits of mild reaction
An efficient and eco-friendly electrochemical synthesis of various sulfinic esters from thiols and alcohols via sequential S–H/S bond cleavage and double S–O bond formation under mild reaction conditions has been developed. Stoichiometric oxidants, metal catalysts, activating agents and even added bases were avoided in this method, and the only by-product generated from this reaction was dihydrogen