Réaction #1857592
ord-fe92155c208043948a87fae7827105bd
Équation de réaction
Réactifs
Réactifs
Conditions de réaction
Traitement
- 1Autrewere in solution (˜10 minutes)
- 2AutreThe ice bath was removed
- 3workup.STIRRINGthe mixture was stirred for 2 hours
- 4workup.ADDITIONThe reaction was diluted with dichloromethane (100 mL)
- 5Lavagethe organic phase was washed with H2O (200 mL)
- 6SéchageThe organic layer was dried over sodium sulfate
- 7Filtrationfiltered
- 8Concentrationconcentrated under reduced pressure
- 9AutreThe solid was triturated with ethyl acetate/hexanes (1/5)
Mode opératoire
To a stirring mixture of ((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-amine hydrochloride (Example 4-1a) (500 mg, 2 mmol) in DCM (20 mL), cooled to 0° C. via an ice water bath, was added triethylamine (600 mg, 6 mmol). The mixture was stirred until all solids were in solution (˜10 minutes). 3-Chloro-4-(methylsulfonyl)thiophene-2-carbonyl chloride (543 mg, 2.1 mmol), in 2 mL CH3CN, was added via syringe to the free amine at 0° C. The ice bath was removed and the mixture was stirred for 2 hours. The reaction was diluted with dichloromethane (100 mL) and the organic phase was washed with H2O (200 mL). The organic layer was dried over sodium sulfate, filtered and concentrated under reduced pressure. The solid was triturated with ethyl acetate/hexanes (1/5) to afford 3-chloro-N-(1-((3,5-dimethylisoxazol-4-yl)methyl)-1H-pyrazol-4-yl)-4 (methylsulfonyl)thiophene-2-carboxamide (375 mg, 45%) as a white solid. 1H NMR (CDCl3, 400 MHz): δ 2.20 (s, 3H), 2.43 (s, 4H), 3.22 (s, 3H), 5.05 (s, 2H), 7.57 (s, 1H), 7.94 (s, 1H), 8.41 (s, 1H), 8.59 (bs, 1H). LC/MS; [M+H] 415.5. Melting point: 202-204° C.