Hydrochloric Acid → HCID 136175584, compound

Participants

Reaction Steps

0.1 g (0.43 mmol) of 5-amino-1-(2,3-dimethylphenyl)-1H-pyrazole-4-carboxamide (Example 17A) is dissolved under argon in 6 ml of absolute ethanol and 0.24 g (1.3 mmol) of methyl 3-chlorophenylacetate and 0.17 g (4.34 mmol) of 60% sodium hydride (suspension in mineral oil) are added. The reaction mixture is heated to reflux overnight. Cooling to room temperature is followed by acidification with concentrated hydrochloric acid. The mixture of sodium chloride and the product precipitated thereby is filtered off and washed several times with water and diethyl ether. Drying under high vacuum results in 97 mg (61% of theory) of the product as colourless solid.

Provenance & Evidence