1-Benzyl-4-piperidone → HCID 59993160, compound

Participants

Reaction Steps

To a suspension of NaH (60% in mineral oil, 6 g, 0.15 mol) in dry THF (300 mL), under N2 atmosphere, was added a solution of methyl 2-(diethoxyphosphoryl)-propionate (33.6 g, 0.15 mol) in dry THF (150 mL) at such a rate to keep the temperature below 30° C. After being stirred at r.t for 40 min, a solution of N-benzyl-4-piperidone (28.35 g, 0.15 mol) in dry THF (100 mL) was added dropwise keeping the temperature below 30° C. After the addition was completed, the mixture was stirred at r.t for 30 min. The reaction was quenched with NH4Cl (sat. aq., 400 mL). The mixture was extracted with Et2O (300 mL×2) and the combined extracts were washed with brine, dried and concentrated to give the crude product as a red oil, which was used directly in the next step.

Provenance & Evidence