Scheme 4. Substrate Scope Study of Different Alcohols^,

Reaction conditions: 1a (0.5 mmol), 2a (1.0 mmol), alcohol (8 mL), H₂O (1 mL), TsOH (0.5 mmol), LiClO₄ (1.5 mmol), constant current = 10 mA, in undivided cell at room temperature under anitrogen atmosphere for 2.5 h.

Yields.