反应详情

To a solution of ethyl 2-(2-(4-(benzyloxy)-3,5-difluorophenyl)cyclopropyl)acetate (505) (0.782 g, 2.25 mmol) in EtOAc/EtOH (5 mL/10 mL) was added 159 mg of 10% Pd/C, and the mixture was stirred under a hydrogen balloon overnight. After filtration through celite and washing with EtOH, the filtrate was concentrated in vacuo to afford 0.508 g of desired product (506) as a pale-yellow liquid. The product was sufficiently pure to be used directly in subsequent couplings. 1H NMR (400 MHz, CDCl3) δ: 6.67 (d, J=8.4 Hz, 2H), 4.96 (br, 1H), 4.23-4.05 (m, 2H), 2.50-2.26 (m, 2H), 1.70-1.66 (m, 1H), 1.33-1.19 (m, 4H), 0.97-0.79 (m, 2H).

1. filtrationAfter filtration through celite
2. washwashing with EtOH
3. concentrationthe filtrate was concentrated in vacuo