Methanol → HCID 69686650, compound

Participants

Reaction Steps

To 100 ml of a solution of 1.85 g of the resulting 3-[(1R,2S)-2-t-butoxycarbonylcyclopropyl]-l-hydroxypyrrolidin-2-one in a 3:1 mixed solvent of methanol and water was added 4.45 ml of a titanium trichloride solution at room temperature while maintaining the reaction mixture neutral by addition of a 1N sodium hydroxide aqueous solution, followed by stirring at the same temperature for 1.5 hours. After completion of the reaction, water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The organic layer was dried over anhydrous sodium sulfate, and the solvent was evaporated under reduced pressure to give 1.53 g (88.4%) of 3-[(1R,2S)-2-t-butoxycarbonylcyclopropyl]pyrrolidin-2-one.

Provenance & Evidence