Fig. 1: Ketone synthesis.

a Classical ketone synthesis from alcohols and acyl electrophiles. b Ketone synthesis via TM-catalyzed coupling with aldehydes. c Ketone synthesis via NHC-catalyzed acylation of activated alkylation reagents. d This work: ketone synthesis via photoredox NHC/Pd-catalyzed acylation of alkyl C(sp33)-H. X = halide. TM = transition metal. NHC = N-heterocyclic carbene. NHPI = N-hydroxyphthalimide. hv = photoirradiation. RN = reaction.