反应详情

温度

60 °C

To a solution of 3-chloro-2-hydroxy-benzoic acid (0.11 g, 0.65 mmol) in acetonitrile (10 mL) is added carbodiimidazole (0.11 g, 0.71 mmol). After stirring the reaction mixture at 60° C. for 2 h, 1-[4-(3-amino-phenyl)-piperazin-1-yl]-2-(5-methyl-3-trifluoromethyl-pyrazol-1-yl)-ethanone (0.20 g, 055 mmol) is added, followed by 1,8-diazabicycloundec-7-ene (0.1 mL, 0.82 mmol). After stirring overnight at 60° C., the reaction mixture is cooled down to RT and then solvent is evaporated and the resulting yellow oil is dissolved in ethylacetate (20 mL), washed with saturated aqueous sodium bicarbonate solution (20 mL), 1N HCl (20 mL) and brine (20 mL). The organic layer is dried over sodium sulfate, filtered, and evaporated under reduced pressure. Cyclohexane is added dropwise to a solution of crude mixture in 1 mL ethylacetate to give after filtration 3-chloro-2-hydroxy-N-(3-{4-[2-(5-methyl-3-trifluoromethyl-pyrazol-1-yl)-acetyl]-piperazin-1-yl}-phenyl)-benzamide (Compound No. I.ao.003) (0.090 g, 26%). 1H-NMR (400 MHz, MeOD): δ=2.31 (s, 3H), 3.21-3.28 (m, 2H), 3.31-3.39 (m, 2H), 3.77-3.83 (m, 4H), 5.25 (s, 2H), 6.47 (s, 1H), 6.87-6.89 (m, 1H), 6.92-6.99 (m, 1H), 7.17-7.22 (m, 1H), 7.28-7.33 (m, 1H), 7.41-7.42 (m, 1H), 7.57-7.61 (m, 1H), 7.90-7.92 (m, 1H). MS: m/z=522 (M+1).

1. stirringAfter stirring overnight at 60° C.
2. temperaturethe reaction mixture is cooled down to RT
3. customsolvent is evaporated
4. dissolutionthe resulting yellow oil is dissolved in ethylacetate (20 mL)
5. washwashed with saturated aqueous sodium bicarbonate solution (20 mL), 1N HCl (20 mL) and brine (20 mL)
6. dry with materialThe organic layer is dried over sodium sulfate
7. filtrationfiltered
8. customevaporated under reduced pressure
9. additionCyclohexane is added dropwise to a solution of crude mixture in 1 mL ethylacetate
10. customto give
11. filtrationafter filtration 3-chloro-2-hydroxy-N-(3-{4-[2-(5-methyl-3-trifluoromethyl-pyrazol-1-yl)-acetyl]-piperazin-1-yl}-phenyl)-benzamide (Compound No