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

Participants

Reaction Steps

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.

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