Electrochemical synthesis of sulfonated benzothiophenes using 2-alkynylthioanisoles and sodium sulfinates
Mingming Zhang, Yu Sun, Wanwan Wang, Kangkang Chen, Wenchao Yang, Lei Wang
Abstract
Electrochemical sulfonylation/cyclization of 2-alkynylthioanisoles with sodium sulfinates 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 to alkynes using sodium sulfinates under electrochemical conditions.
Topics & Concepts
ChemistryElectrosynthesisSulfonylElectrochemistryCatalysisSodiumSubstrate (aquarium)Combinatorial chemistryOrganic chemistryElectrodeGeologyOceanographyAlkylPhysical chemistrySulfur-Based Synthesis TechniquesRadical Photochemical ReactionsCatalytic C–H Functionalization Methods