'One-Pot' Synthesis of Sulphinic Esters from Disulphides
作者:Peter Brownbridge、Ian C. Jowett
DOI:10.1055/s-1988-27535
日期:——
Alkane- and arenesulphinic esters can conveniently be prepared from disulphides and alcohols using N-bromosuccinimide or a combination of 3-chloroperoxybenzoic acid and N-bromosuccinimide.
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
Copper-Catalyzed Aerobic Formation of Unstable Sulfinyl Radicals for the Synthesis of Sulfinates and Thiosulfonates
作者:Pranab K. Shyam、Yu Kwon Kim、Chan Lee、Hye-Young Jang
DOI:10.1002/adsc.201500785
日期:2016.1.7
Copper‐catalyzed aerobic coupling of thiols and alcohols affords sulfinates and thiosulfonates. These products are assumed to form via sulfinylradicals which are not commonly found in oxidative coupling reactions of thiols. A reaction mechanism involving sulfinylradicals is proposed, and mass and electron paramagnetic resonance (EPR) experimental results are provided.
alkylation of sulfinicacids with sulfonamides has been developed via sp3 C−N bond cleavage at room temperature. In the absence of external catalysts and additives, a wide variety of N-benzylic and N-allylic sulfonamides couple with sulfinicacids to give structurally diversified sulfones in moderate to excellent yields. Furthermore, the reaction of N-(2-acyl)allylic sulfonamides with sulfinicacids provides