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Ammonia → 5-(5-methoxy-3H-imidazo[4,5-b]pyridin-3-yl)-3-{[2-(trifluoromethyl)benzyl]oxy}thiophene-2-carboxamide

HRID 2391590
Notes
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Reaction equation

HRID 2391590 reaction equation
[CH3:1][O:2][C:3]1[N:8]=[C:7]2[N:9]([C:12]3[S:16][C:15]([C:17]([O:19]C)=O)=[C:14]([O:21][CH2:22][C:23]4[CH:28]=[CH:27][CH:26]=[CH:25][C:24]=4[C:29]([F:32])([F:31])[F:30])[CH:13]=3)[CH:10]=[N:11][C:6]2=[CH:5][CH:4]=1.[NH3:33]>CO>[CH3:1][O:2][C:3]1[N:8]=[C:7]2[N:9]([C:12]3[S:16][C:15]([C:17]([NH2:33])=[O:19])=[C:14]([O:21][CH2:22][C:23]4[CH:28]=[CH:27][CH:26]=[CH:25][C:24]=4[C:29]([F:32])([F:31])[F:30])[CH:13]=3)[CH:10]=[N:11][C:6]2=[CH:5][CH:4]=1
ParticipantsConditionsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 222AmmoniaHCID 68767171methyl 5-(5-methoxy-3H-imidazo[4,5-b]pyridin-3-yl)-3-{[2-(trifluoromethyl)benzyl]oxy}thiophene-2-carboxylate

Product 1

HCID 251534915-(5-methoxy-3H-imidazo[4,5-b]pyridin-3-yl)-3-{[2-(trifluoromethyl)benzyl]oxy}thiophene-2-carboxamide

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Conditions

Temperature
130 °C

Procedure

A mixture of 0.74 g of methyl 5-(5-methoxy-3H-imidazo[4,5-b]pyridin-3-yl)-3-{[2-(trifluoromethyl)benzyl]oxy}thiophene-2-carboxylate (compound B7b) and 200 ml of a saturated solution of ammonia in methanol was stirred in an autoclave at 130° C. for 10 h. The reaction mixture was allowed to cool down to room temperature and concentrated to about half of the volume. The precipitated solid was filtered, dissolved in 4 ml methanol/DMSO (1:1) and purified by preparative HPLC (water/acetonitrile, elution gradient 9/1 to 1/9 (v/v)). After lyophilization the obtained solid was crystallized with dichloromethane/n-hexane to give the title compound.

Workup

  1. temperatureto cool down to room temperature
  2. concentrationconcentrated to about half of the volume
  3. filtrationThe precipitated solid was filtered
  4. dissolutiondissolved in 4 ml methanol/DMSO (1:1)
  5. custompurified by preparative HPLC (water/acetonitrile, elution gradient 9/1 to 1/9 (v/v))
  6. customAfter lyophilization the obtained solid was crystallized with dichloromethane/n-hexane

Sources & evidence

ORD record
ord-a43706a3e0834483bb658d2c1e0fb29d
Source dataset
uspto-grants-2012_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08273890B2

Reaction notes

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On this pageParticipantsConditionsProcedureWorkupSources & evidenceReaction notes