反应详情

A solution of ethyl 3-chloro-4-(2-(5-(2-(4-chloro-3-methoxyphenyl)propan-2-yl)-1-(4-fluorophenyl)-1H-imidazol-2-yl)vinyl)-5-fluorobenzoate (224 mg, 0.392 mmol) in EtOH (10 mL) was degassed using N2 for 5-10 minutes prior to the addition of PtO2 (42 mg, 0.184 mmol). The resulting suspension was pressurized with 70 psi H2 and agitated overnight. The catalyst was removed by filtration through Celite™ and eluting with more EtOH. The filtrate was concentrated in vacuo to provide ethyl 3-chloro-4-(2-(5-(2-(4-chloro-3-methoxyphenyl)propan-2-yl)-1-(4-fluorophenyl)-1H-imidazol-2-yl)ethyl)-5-fluorobenzoate (153 mg, 68%) as a gray oil. 1H NMR (400 MHz, CDCl3) δ 7.87-7.61 (m, 1H), 7.50 (td, J=9.4, 1.4 Hz, 1H), 7.15 (d, J=8.4 Hz, 1H), 7.11-6.98 (m, 1H), 6.98-6.65 (m, 2H), 6.65-6.32 (m, 4H), 4.38 (dq, J=21.4, 7.1 Hz, 2H), 3.74 (d, J=3.3 Hz, 3H), 3.25-2.83 (m, 2H), 2.52 (dd, J=16.6, 8.9 Hz, 2H), 1.50 (s, 6H), 1.39 (dt, J=14.3, 7.2 Hz, 3H).

1. customfor 5-10 minutes
2. customThe catalyst was removed by filtration through Celite™
3. washeluting with more EtOH
4. concentrationThe filtrate was concentrated in vacuo