Ni-electrocatalytic Kolbe heterocoupling exhibits a broad scope and functional group tolerance across a range of substrate classes (Table ), including 1°-1°, 1°-2°, and even selected 1°-3° coupling. Thus, an aryl halide ), an alkyl halide , an alkyne , olefins , a free alcohol , Table . Reaction Detail. (A) General reaction conditions. (B) Effect of reaction parameters. (C) Reaction generality. All reactions were performed under the general conditions. See SI for further reaction detail. a L1 was used as a ligand instead of L4. a sulfone , ketones , an alkyl boronic ester , and an azetidines ( ) are all tolerated.