Acetonitrile → HCID 25143814, compound

Participants

Reaction Steps

In a sealed tube a mixture of enantiomer E2 of 3-(2,3-difluorophenyl)pyrrolidin-3-ol (0.5 g, 2.5 mmol), acetonitrile (20 mL), potassium carbonate (0.69 g, 5 mmol) and n-butylbromide (0.25 mL, 2.6 mmol) was stirred at ambient temperature for 30 min after which an additional amount of n-butylbromide (0.12 mL, 1.25 mmol) was added and the mixture was stirred for 1 h. Water was added and the aqueous phase was extracted with ethyl acetate. The combined organic phase was dried (Na2SO4) and evaporated. Purification by flash chromatography on silica gel (ethyl acetate/methanol, 1:1) gave the title compound (0.35 g). [α]D=−26° (methanol). The amine was converted to the oxalic acid salt and recrystallized from ethanol/diethyl ether: M.p. 155.3° C.; MS m/z (relative intensity, 70 eV) 255 (M+, 8), 182 (30), 98 (25), 57 (16), 212 (bp).

Provenance & Evidence