Photoredox catalysis in alkene and alkyne alkylsulfonylations: the construction of Markovnikov selective α-sulfones

Abstract

Photoredox alkene or alkyne alkylsulfonylation has been achieved with phthalimide esters and sulfinates providing unexpected α-sulfones. Mechanistic studies disclose that the preferential alkyl radical addition to alkene or the Markovnikov...

Visible-light-induced bifunctionalisation of (homo)propargylic amines with CO2 and arylsulfinates

“…Based on the above experiments and earlier literature, 18 we propose the reaction pathway of carboxylative sulfonylation (Scheme 3). Initially, a Ru II complex is excited by the absorption of blue light, which then oxidises sulfinate 2 to form sulfinyl radical A and Ru I species.…”