Ethanol → 1H-Pyrazole-4-carboxylic acid, 5-(aminocarbonyl)-1-(3-methylphenyl)-

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Reaction Steps

A 9 g. portion of ethyl 5-cyano-1-(3-methylphenyl)-4-pyrazolecarboxylate was dissolved in 200 ml. of ethanol, and 5.8 g. of potassium hydroxide was added. The mixture was stirred under reflux for 4 hours, and then was cooled, diluted with water and made acid. The mixture was filtered, and the solids were washed with ethyl acetate as shown above in Example 8 to obtain 3.8 g. of the desired product, m.p. 209°-211° dec. It was identified by elemental analysis.

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