Pyridine → Trifluoromethanesulfonic acid 3-methoxy-5-methyl-4-piperidin-1-ylmethylphenyl ester

Participants

Reaction Steps

To a stirred solution 3-methoxy-5-methyl-4-piperidin-1-ylmethylphenol (563 mg, 2.4 mmol) and pyridine (0.77 mL, 10.0 mmol) in DCM (20 mL) at 0° C. was added trifluoromethanesulfonyl chloride (0.81 mL, 4.8 mmol). After the addition was complete the reaction was allowed to warm to ambient temperature. The mixture was diluted with DCM (20 mL) and washed with water (10 mL). The organic phase was separated, dried over anhydrous sodium sulfate, filtered and evaporated in vacuo to afford an oil that was purified by flash chromatography (silica, 40 g column, ISCO, 0-100% ethyl acetate in cyclohexane) to afford the title compound as a red oil (698 mg, 58%). NMR (CDCl3, 300 MHz): 6.82 (d, J=2.4 Hz, 1H), 6.73 (d, J=2.4 Hz, 1H), 4.28 (s, 2H), 3.96 (s, 3H), 3.67-3.35 (m, 1H), 2.99-2.66 (m, 1H), 2.47 (s, 3H), 2.21-1.75 (m, 4H), 1.73-1.35 (m, 4H).

Provenance & Evidence