Acetic Acid → Ethyl 4-(4-(3,3-diphenylallyl)piperazin-1-yl)benzoate

Participants

Reaction Steps

To a solution of EXAMPLE 1B (6.27 g, 26.8 mmol) and 3,3-diphenylacrylaldehyde (7.26 g, 34.8 mmol) in dichloromethane/methanol (30 mL/30 mL) was added acetic acid (0.6 mL) followed by addition of sodium triacetoxyborohydride (8.52 g, 40.2 mmol) at room temperature. The reaction mixture was stirred overnight at room temperature. The organic solvents were concentrated in vacuo and the residue was partitioned between dichloromethane and saturated aqueous sodium bicarbonate. The organic layer was washed with water and with brine, dried over magnesium sulfate, filtered and the solvent was evaporated in vacuo. The remaining residue was crystallized from acetonitrile.

Provenance & Evidence