反应详情

To a solution of the product of Example 49, Step A (5.5 mg, 0.028 mmol) in DCM (3 mL) was added TEA (11 μL, 0.084 mmol), 2-chloro-3-(trifluoromethyl)benzoic acid (7 mg, 0.031 mmol) and HATU (13 mg, 0.033 mmol). The reaction was stirred at room temperature overnight. The crude reaction mixture was concentrated and purified on 4 g SiO2 column with 0-3% NH3/MeOH CH2Cl2 to give the desired compound (9.9 mg, 87%). MS (ESI): mass calcd. for C20H13ClF3N3O, 403.1. m/z found, 404.3 [M+H]+. 1H NMR (400 MHz, CDCl3) δ 9.06 (s, 1H), 8.09 (m 1H), 7.94-7.84 (m, 1H), 7.76-7.53 (m, 2H), 7.53-7.39 (m, 2H), 7.39-7.22 (m, 4H), 6.96-6.86 (m, 1H), 6.73 (s, 1H), 5.95 (q, J=7.0 Hz, 1H), 5.54 (s, 1H), 3.22 (q, J=7.3 Hz, 2H), 1.37 (t, J=7.3 Hz, 3H).

1. customThe crude reaction mixture
2. concentrationwas concentrated
3. custompurified on 4 g SiO2 column with 0-3% NH3/MeOH CH2Cl2