Benzimidazole → HCID 23061864, compound

HRID 350726Notes

Reaction equation

HRID 350726 reaction equation
Cl[C:2]1[O:3][C:4]([CH2:14][CH2:15][C:16]([O:18][CH3:19])=[O:17])=[C:5]([C:7]2[CH:12]=[CH:11][CH:10]=[C:9]([Cl:13])[CH:8]=2)[N:6]=1.[NH:20]1[C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][C:23]=2[N:22]=[CH:21]1.C(=O)([O-])[O-].[K+].[K+].CN(C)C=O>O>[N:20]1([C:2]2[O:3][C:4]([CH2:14][CH2:15][C:16]([O:18][CH3:19])=[O:17])=[C:5]([C:7]3[CH:12]=[CH:11][CH:10]=[C:9]([Cl:13])[CH:8]=3)[N:6]=2)[C:24]2[CH:25]=[CH:26][CH:27]=[CH:28][C:23]=2[N:22]=[CH:21]1

Participants

6

Reactant 4

HCID 5798BenzimidazoleHCID 6228DimethylformamideHCID 11430Potassium CarbonateHCID 23061834HCID 23061834, compound

Product 1

HCID 23061864HCID 23061864, compoundYield 63%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
120 °C

Procedure

A mixture of methyl 3-[2-chloro-4-(3-chlorophenyl)-5-oxazolyl]propionate (2.31 g), 1H-benzoimidazole (1.82 g), potassium carbonate (3.19 g) and N,N-dimethylformamide (12 mL) was stirred at 120° C. for 2 hrs. Water was added to the reaction mixture and the mixture was extracted with ethyl acetate. The organic layer was washed successively with water and saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography, and methyl 3-[2-(1H-benzoimidazol-1-yl)-4-(3-chlorophenyl)-5-oxazolyl]propionate (1.85 g, 63%) was obtained as a solid from a fraction eluted with ethyl acetate-hexane (1:1, volume ratio).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe organic layer was washed successively with water and saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-95bbcaf9783e47ba84e7e365358c8863
Source dataset
uspto-grants-2007_02
Patent number
US07183276B2

Reaction notes

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