A photocatalytic sp 3 C-S, C-Se and C-B bond formation through C-C bond cleavage of cycloketone oxime esters.

The photocatalytic thiolation, selenylation and borylation of cycloketone oxime esters through iminyl radical-triggered C-C bond cleavage were described. The reactions provide a unified approach to alkyl sulfur, selenium and boron compounds tethered to a synthetically useful nitrile group.