Water → N,N-dimethyl-1-(phenylmethyl)-3-pyrrolidinemethanamine

Participants

Reaction Steps

A solution of 2.91 g (11.8 mmol) N,N-dimethyl-5-oxo-1-(phenylmethyl)-3-pyrrolidinecarboxamide and 15 mL anhydrous tetrahydrofuran was added dropwise into a suspension of 1.41 g (35 mmol) lithium aluminum hydride in 30 mL tetrahydrofuran. The reaction was refluxed overnight then cooled to room temperature. To the solution was added dropwise successively 1.5 mL water, 1.5 mL 15% sodium hydroxide and 4.5 mL of water. The resulting precipitate was filtered. The filtrate was concentrated under reduced pressure, dissolved in dichloromethane, dried over magnesium sulfate and the solvent evaporated under reduced pressure. The residue was bulb to bulb distilled giving 1.5 g (58%) of N,N-dimethyl-1-(phenylmethyl)-3-pyrrolidinemethanamine as a clear liquid. This material was used in the next step.

Provenance & Evidence