1,2-Dichloroethane → HCID 68810136, compound

Participants

Reaction Conditions

Reaction Steps

1-(tert-Butoxycarbonyl)-4-oxo-L-proline (6.88 g, 30 mmol), HOBt (4.46 g, 33 mmol), EDC (6.326 g, 33 mmol), and 3,3-difluoropyrrolidine hydrochloride (4.52 g, 31.5 mmol) were dissolved in 100 mL of dichloromethane and the reaction mixture was cooled to 0° C. in an ice bath before adding TEA (8.4 mL, 60 mmol). The reaction mixture was then allowed to warm to RT. After stirring overnight, saturated sodium bicarbonate (100 mL) was added and the aqueous layer was extracted with dichloromethane. The combined organic layers were washed with brine, dried over magnesium sulfate, filtered, and concentrated. The residue was purified by chromatography (Biotage® Flash 40M, eluting with 1:10 dichloromethane:hexanes) to afford the title compound 7.85 g (82% yield). MS (EI) m/z 319.3 (MH+).

Provenance & Evidence