Imidazole → HCID 66880843, compound

HRID 2094384Notes

Reaction equation

HRID 2094384 reaction equation
F[C:2]1[CH:3]=[N:4][CH:5]=[CH:6][C:7]=1[C:8]1[O:9][C:10]2[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][C:11]=2[N:12]=1.[NH:21]1[CH:25]=[CH:24][N:23]=[CH:22]1.C(=O)([O-])[O-].[K+].[K+].CN(C=O)C>O>[N:21]1([C:2]2[CH:3]=[N:4][CH:5]=[CH:6][C:7]=2[C:8]2[O:9][C:10]3[CH:16]=[CH:15][C:14]([C:17]([F:20])([F:19])[F:18])=[CH:13][C:11]=3[N:12]=2)[CH:25]=[CH:24][N:23]=[CH:22]1

Participants

6

Reactant 4

HCID 795ImidazoleHCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 668801802-(3-Fluoropyridin-4-yl)-5-(trifluoromethyl)benzoxazole

Product 1

HCID 66880843HCID 66880843, compoundYield 85.4%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

A mixture of 0.31 g of 2-(3-fluoropyridin-4-yl)-5-(trifluoromethyl)benzoxazole, 0.14 g of imidazole, 0.55 g of potassium carbonate and 2 ml of DMF was stirred while heating at room temperature for 1.5 hours, and then at 60° C. for 1.5 hours. The reaction mixture was cooled to room temperature, and then water was added to the reaction mixture, followed by extraction with ethyl acetate twice. The combined organic layers were washed with a saturated sodium chloride solution, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was subjected to silica gel column chromatography to give 0.31 g of 2-[3-(imidazole-1-yl)pyridin-4-yl]-5-(trifluoromethyl)benzoxazole (hereinafter, referred to as “active compound 56”).

Workup

  1. temperatureThe reaction mixture was cooled to room temperature
  2. extractionfollowed by extraction with ethyl acetate twice
  3. washThe combined organic layers were washed with a saturated sodium chloride solution
  4. dry with materialdried over anhydrous magnesium sulfate
  5. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-f2599dc7f16f4c2eab2c29e72263d846
Source dataset
uspto-grants-2013_05
Patent number
US08445522B2

Reaction notes

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