反应详情

温度

60 °C

To a flask containing 1-acetyl-3-(4-fluorophenyl)-1H-indazole-5-carbonyl chloride (330 mg, 0.95 mmol) dissolved in pyridine (6 mL) was added trans-2-aminomethyl-1-cyclohexanol (135.6 mg, 1.05 mmol). The reaction was allowed to stir under a nitrogen atmosphere overnight. Solvent was removed and the reaction was extracted with ethyl acetate. The organic phase was washed with a saturated aqueous solution of sodium bicarbonate, dried with magnesium sulfate, filtered and concentrated to yield the crude product. The product was purified by column chromatography (SiO2, 5% methanol in dichloromethane). The compound was taken up in a 3% ammonia in methanol solution (8 mL) and allowed to reflux at 60° C. for three hours. The reaction was neutralized with 1 N HCl solution and extracted with ethyl acetate. The organic layer was dried with magnesium sulfate, filtered and concentrated to yield the title compound (240 mg, 69% yield). 1H NMR (DMSO-d6) δ 13.5 (s, 1H), 8.6 (s, 2H), 8.1 (m, 2H), 7.9 (d, 1H), 7.6 (d, 1H), 7.4 (m, 2H), 4.8 (s, 1H), 3.5 (m, 1H), 3.2 (m, 1H), 1.8 (m, 2H), 1.6 (m, 2H), 1.4 (m, 2H), 0.8–1.0 (m, 3H), ES-MS m/z 368 [M+1]+.

1. customSolvent was removed
2. extractionthe reaction was extracted with ethyl acetate
3. washThe organic phase was washed with a saturated aqueous solution of sodium bicarbonate
4. dry with materialdried with magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated
7. customto yield the crude product
8. customThe product was purified by column chromatography (SiO2, 5% methanol in dichloromethane)
9. extractionextracted with ethyl acetate
10. dry with materialThe organic layer was dried with magnesium sulfate
11. filtrationfiltered
12. concentrationconcentrated