DMTSF-mediated electrophilic cyclization for the synthesis of 3-thiomethyl-substituted benzo[b]furan derivatives

Benzofuran is an important backbone for molecules that make up several pharmaceuticals, herbicides/pesticides, and organo-electronics. An environmentally benign dimethyl(methylthio)sulfonium tetrafluoroborate salt was used as an electrophile to induce cyclization of