Visible-Light Driven, Metal-Free Hydroalkylation of Alkenes Mediated by Electron Donor-Acceptor Complex Using Benzothiazolines

A visible-light mediated, catalyst-free hydroalkylation of electron-deficient alkenes was achieved using benzothiazoline as a radical transfer reagent. The photoreaction proceeded under household LEDs. Mechanistic studies elucidated the formation of an electron-donor-acceptor complex between benzothiazoline and electron-deficient alkenes. Visible-light mediated, catalyst-free hydroalkylation of electron-deficient alkenes was achieved by use of benzothiazoline as a radical transfer reagent. The photoreaction proceeded under household LEDs. Mechanistic studies elucidated the formation of electron-donor-acceptor complex between benzothiazoline and electron-deficient alkenes.