Water → 2-[(5-Chloro-pyridin-2-ylcarbamoyl)-methyl]-5-[2-(2-methoxy-ethoxy)-ethoxy]-2H-pyrazole-3-carboxylic acid ethyl ester

HRID 33271Notes

Reaction equation

HRID 33271 reaction equation
[CH2:1]([O:3][C:4]([C:6]1[NH:7][N:8]=[C:9]([O:11][CH2:12][CH2:13][O:14][CH2:15][CH2:16][O:17][CH3:18])[CH:10]=1)=[O:5])[CH3:2].[H-].[Na+].Br[CH2:22][C:23]([NH:25][C:26]1[CH:31]=[CH:30][C:29]([Cl:32])=[CH:28][N:27]=1)=[O:24].O>CN(C=O)C>[CH2:1]([O:3][C:4]([C:6]1[N:7]([CH2:22][C:23](=[O:24])[NH:25][C:26]2[CH:31]=[CH:30][C:29]([Cl:32])=[CH:28][N:27]=2)[N:8]=[C:9]([O:11][CH2:12][CH2:13][O:14][CH2:15][CH2:16][O:17][CH3:18])[CH:10]=1)=[O:5])[CH3:2]

Participants

6

Reactant 4

HCID 962WaterHCID 24758Sodium hydrideHCID 34211102-Bromo-N-(5-chloro-2-pyridinyl)acetamideHCID 574744245-[2-(2-Methoxy-ethoxy)-ethoxy]-2H-pyrazole-3-carboxylic acid ethyl ester

Product 1

HCID 602079672-[(5-Chloro-pyridin-2-ylcarbamoyl)-methyl]-5-[2-(2-methoxy-ethoxy)-ethoxy]-2H-pyrazole-3-carboxylic acid ethyl ester

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

To a solution of 1 g 5-[2-(2-Methoxy-ethoxy)-ethoxy]-2H-pyrazole-3-carboxylic acid ethyl ester in 10 ml of DMF and 154 mg of sodium hydride (60% in mineral oil) were added at RT. After stirring for 5 min at room temperature, 966 mg of 2-Bromo-N-(5-chloro-pyridin-2-yl)-acetamide were added. The reaction was stirred at room temperature for 2 h. Then 50 ml of water were added and the mixture was extracted with DCM (3×100 ml). The combined organic layers were dried over MgSO4, filtered and concentrated under reduced pressure. The product was used in the next reaction step without further purification. Yield: 1.2 g.

Workup

  1. stirringThe reaction was stirred at room temperature for 2 h
  2. extractionthe mixture was extracted with DCM (3×100 ml)
  3. dry with materialThe combined organic layers were dried over MgSO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure
  6. customThe product was used in the next reaction step without further purification

Sources & evidence

ORD record
ord-9dfa7266ae6b456696c440543ead31df
Source dataset
uspto-grants-2008_09
Patent number
US07429581B2

Reaction notes

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