反应详情

To a solution of (E)-ethyl 3-(2,6-dichloropyridin-3-yl)acrylate (500 mg, 2.032 mmol) in Ethanol (15 mL) was added 10% platinum on carbon (96 mg, 0.049 mmol). The flask was alternately evacuated and filled with hydrogen five times. The solution was stirred under 1 ATM (balloon) of hydrogen for 1 h, then filtered through celite, while washing well with MeOH and EtOAc. The filtrate was concentrated in vacuo to provide the title compound which was used without further purification. 1H NMR δ (ppm) (CHCl3-d): 7.62 (1H, d, J=7.92 Hz), 7.24 (1H, d, J=7.8), 4.15 (2H, q, J=7.15 Hz), 3.05 (2H, t, J=7.35 Hz), 2.69 (2H, t, J=7.35 Hz), 1.31˜1.24 (3H, m). MS (M+H)+: 247.

1. customThe flask was alternately evacuated
2. additionfilled with hydrogen five times
3. filtrationfiltered through celite
4. washwhile washing well with MeOH and EtOAc
5. concentrationThe filtrate was concentrated in vacuo