反应详情

温度

50 °C

To a solution of methyl 2-fluoro-5-(hexylamino)benzoate (270 mg; 1.07 mmol) and 4-[(4-fluorophenyl)ethynyl]benzaldehyde (358 mg; 1.60 mmol, intermediate which may be obtained according to methods disclosed in EP03103780.7) in anhydrous DCE (15 mL) was added sodium triacetoxyborohydride (678 mg; 3.20 mmol) at rt. The reaction mixture was then heated at 50° C. for 14 h. It was then poured into a solution of saturated NaHCO3 and extracted twice with DCM. The combined organic phases were then washed with brine, dried over MgSO4, filtrated and concentrated. The crude brown oil (652 mg) was purified by preparative HPLC using a X-Terra column to give 158 mg (32%) of the title compound as a beige powder. HPLC, Rt: 6.01 min (purity: 96.5%), LC/MS, M+(ESI): 462.2, 1H NMR: (CDCl3) δ: 7.46 (m, 2H), 7.41 (d, J=8.3 Hz, 2H), 7.37 (m, 1H), 7.13 (d, J=7.9 Hz, 2H), 6.94-7.05 (m, 4H), 4.52 (s, 2H), 3.90 (s, 3H), 3.42 (t, J=7.7 Hz, 2H), 1.56 (m, 2H), 1.26 (m, 6H), 0.85 (t, J=6.6 Hz, 3H).

1. extractionextracted twice with DCM
2. washThe combined organic phases were then washed with brine
3. dry with materialdried over MgSO4
4. filtrationfiltrated
5. concentrationconcentrated
6. customThe crude brown oil (652 mg) was purified by preparative HPLC