反应详情

温度

65 °C

To a solution of the cyclopropane-1,1-dicarboxylic acid [4-(7-benzyloxy-6-methoxy-quinolin-4-yloxy)-3-fluoro-phenyl]-amide (4-fluoro-phenyl)-amide (22.4 g, 37.6 mmol) in EtOH (340 mL) was added 1,4-cyclohexadiene (35 mL, 376 mmol) and 10% Pd/C (2.08 g). The reaction mixture was then heated at 65° C. with stirring for 3 h (Caution: H2 gas is released from the reaction). It was then allowed to cool to room temperature, and filtered through celite followed by a MeOH wash. The solution was then concentrated under reduced pressure. The yellow residue was taken into EtOAc (1 L). The EtOAc solution washed with water (1×), brine (2×), dried over MgSO4 and concentrated in vacuo. Cyclopropane-1,1-dicarboxylic acid [3-fluoro-4-(7-hydroxy-6-methoxy-quinolin-4-yloxy)-phenyl]-amide (4-fluoro-phenyl)-amide was obtained as a yellow solid (17.3 g, 91.1% yield), which were carried on to the next reaction without further purification. 1H NMR (400 MHz, DMSO, d6): 10.39 (s, 1H), 10.15 (s, 1H), 10.00 (s, 1H), 8.38 (d, 1H), 7.88 (dd, 1H), 7.63 (m, 2H), 7.50 (m, 2H), 7.40 (t, 1H), 7.27 (s, 1H), 7.14 (m, 2H), 6.33 (d, 1H), 3.95 (s, 3H), 1.47 (m, 4H). LC/MS Calcd for [M+H]+ 506.2, found 506.3. Anal. HPLC: 99.4% pure.

1. customH2 gas is released from the reaction)
2. temperatureto cool to room temperature
3. filtrationfiltered through celite
4. washwash
5. concentrationThe solution was then concentrated under reduced pressure
6. washThe EtOAc solution washed with water (1×), brine (2×)
7. dry with materialdried over MgSO4
8. concentrationconcentrated in vacuo