Diisopropylethylamine → 1,1-dimethylethyl (2-{[({4-chloro-3-[(3-chloro-5-cyanophenyl)oxy]-2-fluorophenyl}methyl)amino]carbonyl}-1H-indol-5-yl)carbamate

Participants

Reaction Steps

HATU (2.75 g, 7.23 mmol) was added to a solution of 3-{[3-(aminomethyl)-6-chloro-2-fluorophenyl]oxy}-5-chlorobenzonitrile (1.50 g, 4.82 mmol), 5-({[(1,1-dimethylethyl)oxy]carbonyl}amino)-1H-indole-2-carboxylic acid (1.33 g, 4.82 mmol) and diisopropylethylamine (1.26 mL, 7.23 mmol) in DMF (10 mL). The mixture was stirred at RT overnight. The reaction mixture was extracted with EtOAc and water and the organic layer was washed with water, dried over sodium sulfate and concentrated. The residue was purified by silica gel flash chromatography (5-50% EtOAc:hexane) to give an off-white solid which was triturated with EtOAc:hexane, filtered and dried to afford the title compound (1.36 g, 49%) as a white solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 11.44 (s, 1H), 9.07 (br. s., 1H), 8.95 (t, 1H), 7.78 (s, 1H), 7.71 (br. s., 1H), 7.41-7.55 (m, 3H), 7.36 (t, 1H), 7.21-7.30 (m, 1H), 7.15 (d, 1H), 7.03 (s, 1H), 4.37-4.68 (m, 2H), 1.44 (s, 9H). ES-LCMS: m/z 569 (M+H).

Provenance & Evidence