1-Bromo-2-Chloroethane → 1-(2-Chloroethyl)-4,4-difluoropiperidine

Participants

Reaction Conditions

Reaction Steps

To a solution of 4,4-difluoropiperidine (1.00 g, 6.35 mmol) in acetone (15 mL), were added potassium carbonate (2.19 g, 15.9 mmol) and 1-bromo-2-chloroethane (635 μL, 7.62 mmol) and the mixture was stirred for 8 h at 50° C. Insoluble materials were removed by filtration and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography (EtOAc/hexane=0/100→30/70) to obtain title compound (188 mg, 16%) as a pale yellow oil.

Provenance & Evidence