Fig. 3: Substrate Scope.

Reaction conditions: 1 (0.2 mmol) and Ir(ppy)3 (1 mol%) in DCM (2 mL) were irradiated by blue LEDs (24 W, 455 nm) at room temperature under argon for 24 h. The E/Z ratios of 2 were determined by 1H NMR spectrum of the crude reaction mixture. Isolated yields of E-2 are reported. Note: (a) Combined yield of E-2j and Z-2j.