Potassium Carbonate → ethyl 8-[4-fluoro-3-(trifluoromethyl)phenoxy]-3-[6-methoxy-5-(4-methyl-1H-imidazol-1-yl)pyridin-2-yl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylate

HRID 71083Notes

Reaction equation

HRID 71083 reaction equation
Cl[C:2]1([C:25]([O:27][CH2:28][CH3:29])=[O:26])[CH2:7][CH2:6][CH2:5][N:4]2[C:8]([C:11]3[CH:16]=[CH:15][C:14]([N:17]4[CH:21]=[C:20]([CH3:22])[N:19]=[CH:18]4)=[C:13]([O:23][CH3:24])[N:12]=3)=[N:9][N:10]=[C:3]12.[F:30][C:31]1[CH:36]=[CH:35][C:34]([OH:37])=[CH:33][C:32]=1[C:38]([F:41])([F:40])[F:39].C(=O)([O-])[O-].[K+].[K+].[Cl-].[NH4+]>CN(C=O)C>[F:30][C:31]1[CH:36]=[CH:35][C:34]([O:37][C:2]2([C:25]([O:27][CH2:28][CH3:29])=[O:26])[CH2:7][CH2:6][CH2:5][N:4]3[C:8]([C:11]4[CH:16]=[CH:15][C:14]([N:17]5[CH:21]=[C:20]([CH3:22])[N:19]=[CH:18]5)=[C:13]([O:23][CH3:24])[N:12]=4)=[N:9][N:10]=[C:3]23)=[CH:33][C:32]=1[C:38]([F:39])([F:40])[F:41]

Participants

6

Reactant 4

HCID 11430Potassium CarbonateHCID 25517Ammonium ChlorideHCID 6018544-Fluoro-3-(trifluoromethyl)phenolHCID 66607848ethyl 8-chloro-3-[6-methoxy-5-(4-methyl-1H-imidazol-1-yl)pyridin-2-yl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylate

Product 1

HCID 66606976ethyl 8-[4-fluoro-3-(trifluoromethyl)phenoxy]-3-[6-methoxy-5-(4-methyl-1H-imidazol-1-yl)pyridin-2-yl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylateYield 40.2%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
100 °C

Procedure

A mixture of ethyl 8-chloro-3-[6-methoxy-5-(4-methyl-1H-imidazol-1-yl)pyridin-2-yl]-5,6,7,8-tetrahydro[1,2,4]triazolo[4,3-a]pyridine-8-carboxylate (200 mg), 4-fluoro-3-(trifluoromethyl)phenol (91 mg) and potassium carbonate (199 mg) in DMF (2 mL) was stirred at 100° C. for 2 hr. The reaction mixture was cooled to room temperature, saturated aqueous ammonium chloride solution was added, and the mixture was extracted with ethyl acetate. The extract was washed with water and saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (NH, ethyl acetate/hexane) to give the title compound (108 mg).

Workup

  1. temperatureThe reaction mixture was cooled to room temperature
  2. extractionthe mixture was extracted with ethyl acetate
  3. washThe extract was washed with water and saturated brine
  4. dry with materialdried over anhydrous magnesium sulfate
  5. customthe solvent was evaporated under reduced pressure
  6. customThe residue was purified by silica gel column chromatography (NH, ethyl acetate/hexane)

Sources & evidence

ORD record
ord-e57328bf907f4ed0be4d268ba51a0078
Source dataset
uspto-grants-2014_09
Patent number
US08822699B2

Reaction notes

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