Sodium Carbonate → HCID 178459289, compound

HRID 276777Notes

Reaction equation

HRID 276777 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2[N:10]=[C:11]([C:14]3[CH:15]=[CH:16][C:17]([N:20]4[CH2:25][CH2:24][NH:23][CH2:22][CH2:21]4)=[N:18][CH:19]=3)[NH:12][CH:13]=2)[CH:5]=[CH:6][C:7]=1[Cl:8].C(=O)([O-])[O-].[Na+].[Na+].Cl[CH2:33][C:34]([CH3:37])([OH:36])[CH3:35]>C(O)C.[Cl-].[Na+].O>[Cl:1][C:2]1[CH:3]=[C:4]([C:9]2[N:10]=[C:11]([C:14]3[CH:15]=[CH:16][C:17]([N:20]4[CH2:25][CH2:24][N:23]([CH2:33][C:34]([CH3:37])([OH:36])[CH3:35])[CH2:22][CH2:21]4)=[N:18][CH:19]=3)[NH:12][CH:13]=2)[CH:5]=[CH:6][C:7]=1[Cl:8]

Participants

6

Reactant 3

HCID 10340Sodium CarbonateHCID 684091-Chloro-2-methylpropan-2-olHCID 178477952{5-[4-(3,4-dichloro-phenyl)-1H-imidazol-2-yl]-pyridin-2-yl}-piperazine

Product 1

HCID 178459289HCID 178459289, compoundYield 54.6%

Reagents, catalysts & solvents 2

HCID 702EthanolSolventHCID 57417360Sodium chloride; waterSolvent

Procedure

(Reference: Ind. Acad. Sci. 1939, 49, 101-4.) A solution of 1-{5-[4-(3,4-dichloro-phenyl)-1H-imidazol-2-yl]-pyridin-2-yl}-piperazine (155 mg, 0.41 mmol), sodium carbonate (66 mg, 0.62 mmol, 1.5 equiv) and 1-chloro-2-methyl-propan-2-ol (51 μl, 53 mg, 0.50 mmol, 1.2 equiv) in 50% aqueous ethanol (20 ml) under nitrogen atmosphere was heated at reflux overnight. The reaction mixture was then diluted with brine and extracted with ethyl acetate (3×25 ml). The combined organic phases were dried over anhydrous magnesium sulfate, filtered, and -concentrated in vacuo. Purification of the residue by flash column chromatography (50% THF/0.5% ammonium hydroxide/hexanes) provided the desired product (100 mg, 54%).

Workup

  1. temperatureat reflux overnight
  2. extractionextracted with ethyl acetate (3×25 ml)
  3. dry with materialThe combined organic phases were dried over anhydrous magnesium sulfate
  4. filtrationfiltered
  5. customPurification of the residue by flash column chromatography (50% THF/0.5% ammonium hydroxide/hexanes)

Sources & evidence

ORD record
ord-c8dacbbaf6fe4b2f9cf06185628ca015
Source dataset
uspto-grants-2002_03
Patent number
US06355635B1

Reaction notes

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