Substrate scope of α-phosphorylated β-sulfonyl enaminesabcd.
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Reaction condition A: 1 (0.2 mmol), 3 (0.2 mmol, 1.0 equiv.) in DMSO (2 mL) was irradiated for 24 h with blue LEDs (λ = 420 nm) under an argon atmosphere at room temperature.
Isolated yields.
Scale-up reaction: 1a (2.5 mmol), 3a (2.5 mmol, 1.0 equiv.) in DMSO (15 mL) was irradiated for 24 h with blue LEDs (λ = 420 nm) under an argon atmosphere at room temperature.
Reaction condition B: 1a (0.2 mmol) in MeOH (2 mL) was irradiated for 24 h with blue LEDs (λ = 420 nm) under an argon atmosphere at room temperature.