反应详情

To a solution of 2a (580 mg, 1.9 mmol) in a 1:1 mixture of ethyl acetate and methanol (6 mL) was added palladium on charcoal (10% wt, 300 mg, 0.28 mmol). The mixture was stirred under 40 psi atmosphere of hydrogen. After 30 min, the solution was filtered over Celite® and the resulting solution was concentrated to afford the title compound 2b as a dark solution (500 mg, 96% yield). 2b was used in the next step without any further purification. [M+H]+=273.21. 1H NMR (500 MHz, CD3OD) δ ppm 1.43 (m, 9H), 3.58 (m, 3H), 6.33 (d, J=8.25 Hz, 1H), 6.93 (d, J=8.25 Hz, 1H), 7.09 (m, 2H), 7.17 (t, J=7.70 Hz, 1H), 7.41 (d, J=8.25 Hz, 1H).

1. filtrationthe solution was filtered over Celite®
2. concentrationthe resulting solution was concentrated