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Triethylamine → N-[3-({2-[(cyclobutylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)phenyl]-3-(trifluoromethyl)benzamide

HRID 2391506
Notes
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Reaction equation

HRID 2391506 reaction equation
[NH2:1][C:2]1[N:3]=[C:4]2[CH:9]=[CH:8][C:7]([O:10][C:11]3[CH:12]=[C:13]([NH:17][C:18](=[O:29])[C:19]4[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:28])([F:27])[F:26])[CH:20]=4)[CH:14]=[CH:15][CH:16]=3)=[N:6][N:5]2[CH:30]=1.C(N(CC)CC)C.[CH:38]1([C:42](Cl)=[O:43])[CH2:41][CH2:40][CH2:39]1.[Cl-].[NH4+]>O1CCCC1>[CH:38]1([C:42]([NH:1][C:2]2[N:3]=[C:4]3[CH:9]=[CH:8][C:7]([O:10][C:11]4[CH:12]=[C:13]([NH:17][C:18](=[O:29])[C:19]5[CH:24]=[CH:23][CH:22]=[C:21]([C:25]([F:28])([F:27])[F:26])[CH:20]=5)[CH:14]=[CH:15][CH:16]=4)=[N:6][N:5]3[CH:30]=2)=[O:43])[CH2:41][CH2:40][CH2:39]1
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

6

Reactant 4

HCID 8471TriethylamineHCID 25517Ammonium ChlorideHCID 78705Cyclobutanecarbonyl chlorideHCID 57385788N-{3-[(2-aminoimidazo[1,2-b]pyridazin-6-yl)oxy]phenyl}-3-(trifluoromethyl)benzamide

Product 1

HCID 57386316N-[3-({2-[(cyclobutylcarbonyl)amino]imidazo[1,2-b]pyridazin-6-yl}oxy)phenyl]-3-(trifluoromethyl)benzamideYield 54.6%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

To a solution of N-{3-[(2-aminoimidazo[1,2-b]pyridazin-6-yl)oxy]phenyl}-3-(trifluoromethyl)benzamide (150 mg, 0.362 mmol) in tetrahydrofuran (5 mL) were added dropwise triethylamine (75 μL, 0.544 mmol) and cyclobutanecarbonyl chloride (50 μL, 0.435 mmol), and the mixture was stirred at room temperature for 16 hr. Saturated aqueous ammonium chloride solution was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was dried over anhydrous magnesium sulfate, and filtrated. The solvent was evaporated under reduced pressure, and the residue was purified by silica gel column chromatography (ethyl acetate/hexane=50/50→100/0) to give the title compound (98 mg, 54%) as a white powder.

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. dry with materialThe extract was dried over anhydrous magnesium sulfate
  3. filtrationfiltrated
  4. customThe solvent was evaporated under reduced pressure
  5. customthe residue was purified by silica gel column chromatography (ethyl acetate/hexane=50/50→100/0)

Sources & evidence

ORD record
ord-0e91cebb0f5941cc94afc1d79a9dfcc9
Source dataset
uspto-grants-2012_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08273741B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes