反应详情

The title compound was prepared from reaction of the product of Example 4, Step A, 3,4-difluoro-2-[(2-fluoro-4-vinylphenyl)amino]benzoic acid with CDI and 2-(aminooxy)ethanol by the general procedure of Example 1, Step E, then purified by flash column chromatography on silica gel (10% EtOAc/hexanes) to give 3,4-difluoro-2-[(2-fluoro-4-vinylphenyl)amino]-N-(2-hydroxyethoxy)benzamide as a crystalline white solid (78%); m.p. (EtOAc/hexanes) 134–138° C. 1H NMR [400 MHz, (CD3)2SO] δ 11.85 (br s, 1 H), 8.82 (br s, 1 H), 7.45–7.38 (m, 1 H), 7.37 (dd, J=12.9, 1.8 Hz, 1 H), 7.21–7.15 (m, 1 H), 7.14 (dd, J=8.4, 1.7 Hz, 1 H), 6.83 (td, J=8.7, 4.8 Hz, 1 H), 6.65 (dd, J=17.6, 10.8 Hz, 1 H), 5.73 (d, J=17.9 Hz, 1 H), 5.18 (d, J=11.1 Hz, 1 H), 4.70 (br s, 1 H), 3.85 (t, J=4.8 Hz, 1 H), 3.56 (t, J=4.8 Hz, 2 H). Anal. Calcd for C17H15F3N2O3: C, 58.0; H, 4.3; N, 8.0. Found C, 57.6; H, 4.6; N, 8.1.

1. custompurified by flash column chromatography on silica gel (10% EtOAc/hexanes)