Photoinduced aerobic C-S borylation of aryl sulfides

Abstract

Direct C-S borylation of aryl sulfides with B2pin2 has been achieved via a transition-metal-free photochemical process. Under blue LED irradiation, aryl sulfides with various functional groups were converted to aryl boronate esters under ambient conditions using 1,4-benzoquinone as the photosensitizer. This transformation provides an opportunity to transform the widely existing alkylthio group to a convertible group for applications in organic synthesis.