反应详情

3-[4-(4-Amino-2-fluorophenoxy)pyridin-2-yl]-1-methyl-1-(1-methylpiperidin-4-yl)urea (40.8 mg) was dissolved in N,N-dimethylformamide (1.0 ml). 1-(4-Fluorophenylcarbamoyl)cyclopropanecarboxylic acid (73 mg), triethylamine (0.0456 ml) and benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (145 mg) were added under a nitrogen atmosphere at room temperature and stirred for 3.5 hr. Liquid-liquid separation was carried out after addition of ethyl acetate and water to the reaction mixture. The organic layer was washed with a saturated aqueous solution of sodium hydrogencarbonate and brine, and dried over anhydrous sodium sulfate. The solvent was removed and the resultant residue was purified by silica gel column chromatography (Fuji Silysia NH, eluent; ethyl acetate, then ethyl acetate:methanol=97:3) to provide the titled compound as white powder (26.3 mg, 42%).

1. customLiquid-liquid separation
2. additionafter addition of ethyl acetate and water to the reaction mixture
3. washThe organic layer was washed with a saturated aqueous solution of sodium hydrogencarbonate and brine
4. dry with materialdried over anhydrous sodium sulfate
5. customThe solvent was removed
6. customthe resultant residue was purified by silica gel column chromatography (Fuji Silysia NH, eluent