Scheme 2:
Scope of NHPI-mediated oxidation of enol ethersa
a Reaction conditions: 4 (0.30 mmol, 1.0 equiv) and 2 (1.2 equiv) in acetone (6 mL) for 16 h. Isolated yields.
b Reaction mixture was subjected to blue LED light
Scope of NHPI-mediated oxidation of enol ethersa
a Reaction conditions: 4 (0.30 mmol, 1.0 equiv) and 2 (1.2 equiv) in acetone (6 mL) for 16 h. Isolated yields.
b Reaction mixture was subjected to blue LED light