Substrate generality^a.

^a 1a: 0.1 mmol, 2a: 0.12 mmol.

^bThe reaction was run for 96 h with reduced catalyst loading (Cu: 10 mol%, L2: 12 mol%, photocatalyst 0.3 mol%).

^cCombined yield of diastereomers. Color code: white, hydrogen; gray, carbon; blue, nitrogen; red, oxygen.