Fig. 1: Photoelectrochemical Ni-catalyzed cross-coupling of aryl bromides with amine.
From: Photoelectrochemical Ni-catalyzed cross-coupling of aryl bromides with amine at ultra-low potential
a Comparison between traditional and PEC Ni-catalyzed C–N cross-coupling. b Reaction scheme. c Optimization of the reaction conditions. aStandard conditions: BiVO4 photoanode (1.2 cm × 2.5 cm), Ni foam cathode (1.0 cm × 3.0 cm), Ag/AgNO3 as reference electrode, 1 (0.4 mmol), 2 (0.2 mmol), LiBr (0.2 M), NiBr2·glyme (0.02 mmol), dtbbpy (0.03 mmol), DABCO (2 equiv), acetone (5.0 mL), E = –0.4 V vs Ag/AgNO3, blue LED, 12 h, N2. bYields are determined by 1H NMR analysis using benzhydrol as the internal standard. cNR = no reaction. d The proportion of reactant (2), by-products and product (3) and the corresponding selectivity of different methods (See Supplementary Table 1 for more details). Reaction conditions: PC: standard condition without electricity; EC: standard condition without light irradiation, and the bias is raised to +1.5 V vs. Ag/AgNO3; PEC: standard condition. The error bars are three standard deviations of measurement sets.
