反应详情

A solution of toluene-4-sulfonic acid 2-(4-fluorophenyl)-ethyl ester (containing 10% by weight of 2-(4-fluorophenyl)ethanol; 206 mg, 630 μmol), trans-4-(benzyl-methyl-amino)-piperidine-3-carboxylic acid ethyl ester dihydrochloride (220 mg, 630 μmol) and potassium carbonate (261 mg, 1.9 mmol) in acetonitrile (6 mL) was heated at reflux for 17 hours. The mixture was cooled and filtered, the solid was washed with acetonitrile, and the filtrate was concentrated under vacuum. The residue was purified by flash chromatography, eluting with 20%, then 30% ethyl acetate in hexane, to provide an oil (164 mg, 65%). 1H NMR (300 MHz, CDCl3) δ7.28 (m, 5H), 7.16 (m, 2H), 6.98 (t, J=9 Hz, 2H), 4.20 (m, 2H), 3.75 (d, J=13 Hz, 1H), 3.48 (d, J=13 Hz, 1H), 3.14 (m, 2H), 2.88 (m, 2H), 2.80 (m, 2H), 2.62 (m, 2H), 2.29 (m, 1H), 2.20 (s, 3H), 1.87 (m, 1H), 1.70 (m, 2H), 1.28 (t, J=7 Hz, 3H).

1. temperatureat reflux for 17 hours
2. temperatureThe mixture was cooled
3. filtrationfiltered
4. washthe solid was washed with acetonitrile
5. concentrationthe filtrate was concentrated under vacuum
6. customThe residue was purified by flash chromatography
7. washeluting with 20%