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

HRID 520715Notes

Reaction equation

HRID 520715 reaction equation
[NH2:1][C:2]1[CH:7]=[C:6]([O:8][C:9]2[CH:14]=[CH:13][C:12]([NH:15][C:16]([C:18]3[C:19](=[O:31])[N:20]([C:25]4[CH:30]=[CH:29][CH:28]=[CH:27][CH:26]=4)[N:21]([CH3:24])[C:22]=3[CH3:23])=[O:17])=[CH:11][C:10]=2[F:32])[CH:5]=[CH:4][N:3]=1.[C:33]1([O:39][C:40](Cl)=[O:41])[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=1>C(Cl)Cl.N1C=CC=CC=1.C(Cl)Cl>[CH3:24][N:21]1[C:22]([CH3:23])=[C:18]([C:16]([NH:15][C:12]2[CH:13]=[CH:14][C:9]([O:8][C:6]3[CH:5]=[CH:4][N:3]=[C:2]([NH:1][C:40](=[O:41])[O:39][C:33]4[CH:38]=[CH:37][CH:36]=[CH:35][CH:34]=4)[CH:7]=3)=[C:10]([F:32])[CH:11]=2)=[O:17])[C:19](=[O:31])[N:20]1[C:25]1[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=1

Participants

5

Reactant 2

HCID 15891Phenyl chloroformateHCID 73053650N-(4-((2-aminopyridin-4-yl)oxy)-3-fluorophenyl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-c arboxamide

Product 1

HCID 131732557phenyl(4-(4-(1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamido)-2-fluorophenoxy)pyridin-2-yl)carbamateYield 57.8%

Reagents, catalysts & solvents 2

HCID 6344DichloromethaneSolvent2×HCID 21875418Pyridine methylene chlorideSolvent

Conditions

Temperature
0 °C

Procedure

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%).

Workup

  1. washThe mixture was washed with water (150 mL×3)
  2. washby washing with brine (150 mL)
  3. dry with materialdried over anhydrous Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated in vacuo
  6. customThe residue was purified by a silica gel column chromatography (DCM/MeOH (v/v)=150/1)

Sources & evidence

ORD record
ord-dbf8718e1b864175a38885c8642adf93
Source dataset
uspto-grants-2016_05
Patent number
US09326975B2

Reaction notes

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