Electrochemical synthesis of sulfonated benzothiophenes using 2-alkynylthioanisoles and sodium sulfinates
作者:Ming-Ming Zhang、Yu Sun、Wan-Wan Wang、Kang-Kang Chen、Wen-Chao Yang、Lei Wang
DOI:10.1039/d1ob00079a
日期:——
Electrochemicalsulfonylation/cyclization of 2-alkynylthioanisoles with sodiumsulfinates was developed under catalyst-, external oxidant- and metal-free conditions. The electrosynthesis provides sustainable and efficient access to 3-sulfonated benzothiophenes with good substrate scope and functional group tolerance. This cascade radical process has been triggered through a sulfonyl radical addition
Three‐Component Synthesis of 3‐(Arylsulfonyl)benzothiophenes Using Acetic Acid as a Quencher for Methyl Radical‐Mediated Side Reactions
作者:Vighneshwar Shridhar Bhat、Anna Lee
DOI:10.1002/adsc.202300099
日期:——
one-pot, three-component synthesis of 3-(arylsulfonyl)benzothiophenes was developed. The reaction did not require any catalysts or additives. The desired products were obtained via an intramolecular radical cyclization. Acetic acid was employed as the solvent and a quencher for side reactions involving methyl radicals. Moreover, inexpensive potassium metabisulfite was used as a sulfur dioxide surrogate