反应详情

温度

105 °C

A mixture of 1-(1-methylpiperidin-4-yl)-7-trifluoromethanesulfonyloxynaphthalene (0.25 g, 0.67 mmol), triethylamine (0.373 mL, 2.68 mmol), 3-phenylpropylamine (0.286 mL, 2.01 mmol), and bis-(triphenylphosphine)palladium chloride (0.025 g, 0.033 mmol) was blanketed with an atmosphere of carbon monoxide (balloon) and heated to 105° C. for 16 h. The reaction was diluted with ethyl acetate and filtered through celite. The filtrate was washed with water and brine, dried and concentrated. The residue was flash chromatographed on silica gel (1×3 inches packed with 75% ethyl acetate/hexane). Elution proceeded as follows: 75% ethyl acetate/hexane, 150 mL, nil; ethyl acetate, 150 mL, nil; 2% methanol/1% triethylamine/ethyl acetate, 200 mL and 2% methanol/1% triethylamine/ethyl acetate, 100 mL, 0.21 g of an oil. Bulb to bulb distillation removed impurities (pot temperature up to 120° C., 1 mm mercury (Hg)). The pot residue was pure product and weighed 0.190 g (73%). The 1-(1-methylpiperidin-4-yl)-7-naphthalene carboxylic acid 3-phenylpropyl amide obtained in this manner solidified on standing and had mp 47-50° C.; 1H NMR (250 MHz, CDCl3) δ 8.67 (s, 1 H), 7.86 (d, J=8.5 Hz, 1 H), 7.73 (d, J=6.5 Hz, 1 H), 7.61-7.43 (m, 3 H), 7.36-7.18 (m, 5 H), 6.33 (br s, 1 H), 3.58 (q, J=6.5 Hz, 2 H), 3.42 (sym m, 1 H), 3.05 (br d, J=11.5 Hz, 2 H), 2.77 (t, J=7.5Hz, 2 H), 2.38 (s, 3 H), 2.27 (sym m, 2 H), 2.10-1.88 (m, 6 H).

1. filtrationfiltered through celite
2. washThe filtrate was washed with water and brine
3. customdried
4. concentrationconcentrated
5. customchromatographed on silica gel (1×3 inches packed with 75% ethyl acetate/hexane)
6. washElution
7. distillationBulb to bulb distillation
8. customremoved impurities (pot temperature up to 120° C., 1 mm mercury (Hg))