Acetic Acid → HCID 71293539, compound

Participants

Reaction Steps

To a stirred solution of 5-{4-[3-fluoro-4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]pyridin-2-yl}-N-(2-oxoethyl)-1H-pyrrole-3-carboxamide (200 mg, 0.40 mmol) and 1-ethoxycarbonylpiperazine (158 mg, 1.0 mmol) in anhydrous DMF (10 ml) was added acetic acid (10 mg, 0.17 mmol). The mixture was stirred under nitrogen for 60 minutes, followed by addition of 1M sodium cyanoborohydride solution in THF (1.0 ml, 1.0 mmol). The reaction mixture was stirred for another hour, and poured into 100 ml of water with vigorous stirring. The precipitates were filtered, washed with water, and dried in vacuo to give the crude, which was purified by silica gel chromatography eluting with 5% methanol/chloroform solution to give ethyl 4-(2-{[(5-{4-[3-fluoro-4-({[(2-fluoro-5-methylphenyl)amino]carbonyl}amino)phenoxy]pyridin-2-yl}-1H-pyrrol-3-yl)carbonyl]amino}ethyl)piperazine-1-carboxylate as white solid. Yield: 77 mg, 30%.

Provenance & Evidence