Potassium Carbonate → 4-(4-Iodo-phenyl)-1-(3,3,3-trifluoro-propyl)-piperidine-4-carbonitrile

Participants

Reaction Conditions

Reaction Steps

To a solution of the crude 4-(4-iodo-phenyl)-piperidine-4-carbonitrile (0.60 g, ˜1.9 mmol) in CH3CN (6 mL) was added (3,3,3-trifluoro)-propyl bromide (1.02 mL, 9.6 mmol, 5 eq.) and K2CO3 (1.33 g, 9.6 mmol, 5 eq.) and the resulting mixture was stirred and heated to 60° C. for 16 h. The reaction was cooled to room temperature, diluted with EtOAc (20 mL) and washed with H2O (25 mL) and saturated brine (2×25 mL). The organic phase was dried over anhydrous Na2SO4, filtered and concentrated by rotary evaporation to give the crude 4-(4-iodo-phenyl)-1-(3,3,3-trifluoro-propyl)-piperidine-4-carbonitrile as a red solid (0.761 g, 1.86 mmol, 98%). 1H NMR (300 MHz, CDCl3): δ 7.83 (dd, 2H), 7.33 (dd, 2H), 3.09 (d, 2H), 2.82 (dd, 2H), 2.66 (td, 2H), 2.45 (m, 2H), 2.18 (m, 4H); MS (ESI): 409.1/410.2 (M +1).

Provenance & Evidence