Hydrochloric Acid → HCID 67490886, compound

Participants

Reaction Conditions

Reaction Steps

(3S,4S)-3-Allyl-4-(tert-butyldimethylsilyloxy)methyl-1-[(1R)-1-phenylethyl]pyrrolidine (213 g, 592 mmol) was dissolved in dichloromethane (420 mL). Benzyl chloroformate (169.2 mL, 1.19 mol) was added dropwise, and the mixture was stirred at 55° C. for 10 hours and then at room temperature for 14 hours. A 1 M solution of hydrochloric acid in ethanol (250 mL, 250 mmol) was further added to the reaction solution, and the mixture was stirred at room temperature for 24 hours. The reaction solution was extracted with a saturated sodium bicarbonate solution and ethyl acetate. Then, the organic layer was washed with brine, dried over anhydrous sodium sulfate, and then concentrated under reduced pressure. The resulting residue was purified by silica gel column chromatography (hexane:ethyl acetate=10:1→1:1) to give 140 g of the title compound as a pale yellow oil.

Provenance & Evidence