Acetone → Desvenlafaxine

Participants

Reaction Conditions

Reaction Steps

5.0 g Venlafaxine was dissolved in 50 ml dimethylsulfoxide at 25-30° C. Sodium cyanide 9.0 g was added and reaction mass was heated to 180-185° C. for 4 hours. The reaction mass was cooled and 25 ml water was added. The resulting solution was extracted with 2×50 ml ethyl acetate, combined organic layer was dried over anhydrous sodium sulfate, followed by distillation to give residue. The residue was treated with 25 ml acetone then cooled to 0-5° C. to give O-desmethylvenlafaxine.

Provenance & Evidence