Reacción #607897

Ecuación de reacción

N-(4-((2-aminopyridin-4-yl)oxy)-3-fluorophenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide

phenylcarbonochloridate

→

title compound

Rendimiento 57.8%

phenyl (4-(4-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamido)-2-fluorophenoxy)pyridin-2-yl)carbamate

Rendimiento 57.8%

Disolventes

DCM pyridine

DCM

DCM

Condiciones de reacción

Tratamiento posterior

1. 1
   LavadoThe mixture was washed with water (150 mL×3)
2. 2
   Lavadoby washing with brine (150 mL)
3. 3
   Secadodried over anhydrous Na2SO4
4. 4
   Filtraciónfiltered
5. 5
   Concentraciónconcentrated in vacuo
6. 6
   OtroThe residue was purified by a silica gel column chromatography (DCM/MeOH (v/v)=150/1)

Procedimiento

A suspension of N-(4-((2-aminopyridin-4-yl)oxy)-3-fluorophenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide (500 mg, 1.10 mmol) in DCM/pyridine (50 mL/25 mL) was cooled to 0° C., then a solution of phenylcarbonochloridate (450 mg, 2.90 mmol) in DCM (5 mL) was added to the mixture slowly over 0.5 hour. The reaction was stirred at rt for 2 hours, then diluted with DCM (250 mL). The mixture was washed with water (150 mL×3), followed by washing with brine (150 mL), dried over anhydrous Na2SO4, filtered, and concentrated in vacuo. The residue was purified by a silica gel column chromatography (DCM/MeOH (v/v)=150/1) to give the title compound as a white solid (352 mg, 46%).

Fuente