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Triethylamine → N-(5-((2-(cyclobutanecarboxamido)pyridin-4-yl)oxy)pyridin-2-yl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide

HRID 873000
Notes
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Reaction equation

HRID 873000 reaction equation
[NH2:1][C:2]1[CH:7]=[C:6]([O:8][C:9]2[CH:10]=[CH:11][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])=[N:13][CH:14]=2)[CH:5]=[CH:4][N:3]=1.CCN(CC)CC.[CH:39]1([C:43](Cl)=[O:44])[CH2:42][CH2:41][CH2:40]1>C1COCC1.CCOC(C)=O>[CH:39]1([C:43]([NH:1][C:2]2[CH:7]=[C:6]([O:8][C:9]3[CH:10]=[CH:11][C:12]([NH:15][C:16]([C:18]4[C:19](=[O:31])[N:20]([C:25]5[CH:26]=[CH:27][CH:28]=[CH:29][CH:30]=5)[N:21]([CH3:24])[C:22]=4[CH3:23])=[O:17])=[N:13][CH:14]=3)[CH:5]=[CH:4][N:3]=2)=[O:44])[CH2:42][CH2:41][CH2:40]1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 78705Cyclobutanecarbonyl chlorideHCID 73053627N-(5-((2-aminopyridin-4-yl)oxy)pyridin-2-yl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide

Product 1

HCID 73051377N-(5-((2-(cyclobutanecarboxamido)pyridin-4-yl)oxy)pyridin-2-yl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamideYield 41.8%

Reagents, catalysts & solvents 2

HCID 8028TetrahydrofuranSolvent2×
HCID 8857Ethyl AcetateSolvent

Conditions

Temperature
0 °C

Procedure

To a suspension of N-(5-((2-aminopyridin-4-yl)oxy)pyridin-2-yl)-1,5-dimethyl-3-oxo-2-phenyl-2,3-dihydro-1H-pyrazole-4-carboxamide (50 mg, 0.12 mmol) in THF (13 mL) was added Et3N (0.034 mL, 0.24 mmol). The suspension was cooled to 0° C., then a solution of cyclobutanecarbonyl chloride (28.5 mg, 0.24 mmol) in THF (3 mL) was added to the mixture slowly. The reaction was stirred at rt for 1.25 hours, then diluted with EtOAc (15 mL). The mixture was washed with water (15 mL×2), followed by washing with brine (15 mL), dried over anhydrous Na2SO4, and concentrated in vacuo. The residue was purified by a silica gel column chromatography (DCM/MeOH (v/v)=60/1) to give the title compound as a white solid (25 mg, 41%).

Workup

  1. washThe mixture was washed with water (15 mL×2)
  2. washby washing with brine (15 mL)
  3. dry with materialdried over anhydrous Na2SO4
  4. concentrationconcentrated in vacuo
  5. customThe residue was purified by a silica gel column chromatography (DCM/MeOH (v/v)=60/1)

Sources & evidence

ORD record
ord-12e0ab5c48e244948710a290d0f4a5a6
Source dataset
uspto-grants-2015_03
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08975282B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes