(R)-4-((S)-1-hydroxyethyl)-1-((R)-1-phenylethyl)pyrrolidin-2-one → (R)-4-((S)-1-hydroxyethyl)pyrrolidin-2-one

Participants

Reaction Steps

A solution of (R)-4-((S)-1-hydroxyethyl)-1-((R)-1-phenylethyl)pyrrolidin-2-one (500 mg, 2.1 mmol) in TFA (3.6 mL) was heated to 150° C. in a microwave reactor. After 90 min, the resulting mixture was diluted with DCM and concentrated in vacuo. The resulting residue was dissolved in DCM (15 mL) and water (20 mL). The phases were separated, and the organic phase was extracted with water (4×20 mL). The combined aqueous phase was concentrated in vacuo, and the resulting crude residue was purified by silica gel chromatography (10% to 30% MeOH in DCM) to afford (R)-4-((S)-1-hydroxyethyl)pyrrolidin-2-one 1.18.

Provenance & Evidence