Fig. 1: Transition-metal-catalyzed difunctionalization of alkenes.
From: Nickel-catalyzed enantioselective reductive carbo-acylation of alkenes

a Asymmetric dicarbofunctionalization of tethered alkenes involving arylmetalation. b Redox-neutral carbo-acylation. c Ni-catalyzed reductive asymmetric carbo-acylation of tethered alkenes.