反应详情

A solution of 2-fluoro-4-(trifluoromethyl)benzoyl chloride (3 g, 13.24 mmol) in dichloromethane (27.6 mL) was added dropwise to a mixture of methyl 4-aminobenzoate (2.0 g, 13.24 mmol), pyridine (3.21 mL, 39.72 mmol) and dichloromethane (41.4 mL) at 0° C. The reaction was stirred and allowed to warm up to room temperature over 2 hours. To the reaction, water (30 mL) was added. The solid was isolated by filtration, washed with water (2×30 mL) and hexane (2×30 mL) to yield methyl 4-[[2-fluoro-4-(trifluoromethyl)benzoyl]amino]benzoate (3.811 g, 84%) as a white solid. ESI-MS m/z calc. 341.07, found 342.2 (M+1)+; Retention time: 1.64 minutes (3 minutes run). 1H NMR (400 MHz, DMSO-d6) δ 10.97 (s, 1H), 8.02-7.96 (m, 2H), 7.96-7.89 (m, 2H), 7.89-7.83 (m, 2H), 7.76 (dd, J=8.0, 1.6 Hz, 1H), 3.85 (s, 3H) ppm.

1. additionwas added
2. customThe solid was isolated by filtration
3. washwashed with water (2×30 mL) and hexane (2×30 mL)