Water → N-((1-Benzylpyrrolidin-3-yl)methyl)cyclopropanamine

Participants

Reaction Steps

To a suspension of 8.2 g (0.20 mole) of lithium aluminum hydride in 150 mL of dry tetrahydrofuran was added portionwise 18.0 g (70.0 mmole) of solid 5-oxo-1-(phenylmethyl)-N-cyclopropyl-3-pyrrolidinecarboxamide. When the addition was complete, the reaction mixture was stirred at room temperature for 18 hours and then at reflux for two hours. After cooling to room temperature, the mixture was treated dropwise, successively, with 8 mL of water, 8 mL of 15% aqueous sodium hydroxide and 24 mL of water, titrating the final addition to produce a granular precipitate. The solid was removed by filtration, washed with tetrahydrofuran and the filtrate evaporated in vacuo to give 16.0 g of 1-(phenylmethyl)-N-cyclopropyl-3-pyrrolidinemethanamine, as a heavy oil. This was used for the next step without further purification.

Provenance & Evidence