5-(3-Methoxyphenyl)-2-pyrrolidinone → 2-(3-Methoxyphenyl)pyrrolidine

Participants

Reaction Steps

To a solution of 5-(3-methoxyphenyl)-2-pyrrolidinone (7.0 g) in dry tetrahydrofuran (280 ml) was added 1M lithium aluminum hydride in tetrahydrofuran (55 ml), dropwise at ambient temperature, under nitrogen. Upon completion of the addition, the reaction mixture was warmed under reflux for 2 hrs, cooled to ambient temperature, and quenched with 10% aqueous tetrahydrofuran (60 ml) followed by 10% sodium hydroxide solution (50 ml). The suspension was filtered through a pad of celite, and the filter cake was washed with dichloromethane. The combined filtrates were concentrated and the concentrate was dried over anhydrous potassium carbonate, filtered, and the filtrate was concentrated to give 6.3 g (96%) of 2-(3-methoxyphenyl)pyrrolidine.

Provenance & Evidence