Fig. 6: Mechanistic studies for cobalt-catalyzed cascade difluoroalkylarylation.
From: Organozinc pivalates for cobalt-catalyzed difluoroalkylarylation of alkenes

a Radical evidences. b Reduction of CoBr2 by arylzinc pivalates. c Reactivity of well-defined Co(I), Co(0) catalysts. d Catalytic activity investigation of the in situ low-valent cobalt species. e EPR experiments with DMPO (DMPO = 5,5-dimethyl-1-pyrroline-1-oxide).