Scope of three-component carboacylation of alkenesa.
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General reaction conditions: 1 (2 mmol), 2 (0.4 mmol), 3 (0.2 mmol), Ni(dtbbpy)Br2 (10 mol%), NaDT (2 mol%), K2HPO4 (0.4 mmol) in acetone (0.2 M) at 30 °C under irradiation of LEDs (10 W, λ = 390 nm) for 24 hours. Yields of isolated products. d.r., diastereomeric ratio; r.r., regioisomeric ratio.