1-Phenyl-2-propen-1-one → 1,3-Dimethyl-3-(3-oxo-3-phenyl-propyl)-piperidin-4-one

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of 1,3-dimethyl-piperidin-4-one (0.1 g, 0.787 mmol) in mixture of 1,4 dioxane (2 mL) and water (0.1 mL) was added crushed KOH (44 mg, 0.787 mmol). The reaction mixture was stirred at 25° C. for 10 min. To this was added 1-phenylprop-2-en-1-one (103 mg, 0.787 mmol) dropwise. The reaction mixture was stirred at 25° C. for 2 h. The reaction mixture was concentrated under reduced pressure and the residue was diluted with water (10 mL) and EtOAc (20 mL), the organic layer was separated, dried over anhydrous sodium sulfate and concentrated under reduced pressure. The resulting crude product was purified by column chromatography on neutral alumina (eluted with EtOAc:Hexanes, 1:99) to afford 1,3-dimethyl-3-(3-oxo-3-phenyl-propyl)-piperidin-4-one as an oil (22 mg).

Provenance & Evidence