Table 1.

Substrate scope. Photocatalytic N−N coupling, pinacol‐type coupling and dehalogenative C−C coupling using gCN−OH with water as the hydrogen donor.

Reaction conditions: [a] 8 mM reactant, 10 mg gCN−OH and 4 mg KOH in 2 mL 1 vol % H₂O–dioxane solution, 410 nm LED (30 mW cm⁻²), 1 bar N₂ at RT for 1 h. [b] Same as [a], 450 nm LED (30 mW cm⁻²) for 3 h. [c] Same as [a], in 1 vol % H₂O‐DMF solution with additional 0.17 mg PdCl₂. [d] Same as [c], 0.25 h; [e] Same as [c], 0.017 mg PdCl₂, 4 h. [f] Same as [c], 3 h. [g] Same as [a], with additional 0.22 mg NiCl₂. [h] Same as [g], 2 h. Con.: conversion, Sel.: selectivity.