HCID 15681286, compound → HCID 18930330, compound

Participants

Reaction Conditions

Reaction Steps

Dissolve 1-(2-phenylethyl)-4-piperidinecarboxaldehyde (10.0 g, 46.02 mmol) in anhydrous tetrahydrofuran (300 mL), place under an argon atmosphere and cool to -78° C. Add, by dropwise addition, a solution of 2-lithiothiophene (46.02 mL of a 1M solution in tetrahydrofuran, 46.02 mmol) and stir for 3 hours at -78° C. Quench with saturated ammonium chloride, separate the organic phase and extract the aqueous phase with ethyl acetate. Combine the organic phases, dry (MgSO4) and evaporate the solvent in vacuo. Purify by chromatography (ethyl acetate) and recrystallize (cyclohexane) to give the title compound as a white solid; mp 123°-125° C.

Provenance & Evidence