Photoredox mediated one-step syntheses of aryl C-glycosides from unprotected glycosyl sulfinates

Unprotected glycosyl sulfinates undergo Ni-mediated cross coupling with a range of aryl iodides and bromides under photoredox conditions to yield aryl C-glycosides, predominantly as the β-anomers. Thioglycoside formation is occasionally observed as a competitive side reaction.