反应详情

温度

150 °C

To a solution of 3-[5-bromo-4-(4-methoxy-phenyl)-thiazol-2-ylmethoxy]-2,6-difluoro-benzamide (0.20 g, 0.43 mmol) in pyridine (4.0 mL) was added CuCN (0.19 g, 2.19 mmol). The reaction mixture was heated to 150° C. in microwave for 2 h. After the completion of the reaction, pH was adjusted to 3-4 with 1N HCl solution and extracted with ethyl acetate (3×50 mL). The combined organics was washed with water, brine, dried (Na2SO4), filtered and concentrated. The crude residue was purified over silica gel (60-120 M, 45% EtOAc-Hexane) to get the desired product (0.02 g, 11%) as a brown solid. 1H NMR (DMSO-d6, 400 MHz): δ 3.79 (s, 3H), 5.67 (s, 2H), 7.16 (m, 3H), 7.42 (m, 1H), 7.88 (br s, 1H), 8.03 (d, J=8.80 Hz, 2H) and 8.19 (br s, 1H). MS ES+ (402.07), HPLC (method I) Rt=16.60 min.

1. customAfter the completion of the reaction, pH
2. extractionextracted with ethyl acetate (3×50 mL)
3. washThe combined organics was washed with water, brine
4. dry with materialdried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated
7. customThe crude residue was purified over silica gel (60-120 M, 45% EtOAc-Hexane)