Variation of Alkyl Halides on Visible-Light Photoredox Olefination
Reaction conditions: Ar atmosphere and irradiation of visible light with 23-W CFL, Ru(bpy)3Cl2⋅6H2O (A) (5.0 μmol) or Ir(ppy)2dtbbpyPF6 (C) (10 μmol), alkyl bromide (1) (1.5 mmol), aldehyde (2) (1.0 mmol), triphenylphosphine (PPh3) (1.5 mmol), K2CO3 (1.5 mmol), DMF (2.0 mL), temperature (room temperature [rt] ∼25°C), time 3–12 hr, in a sealed Schlenk tube. Isolated yield. E/Z ratios were determined by 1H nulcear magnetic resonance spectroscopy. See Transparent Methods for experimental details.