Sulfuric Acid → 1,3-dimethyl-4-nitro-1H-pyrazole-5-carboxamide

Beteiligte Stoffe

Reaktionsschritte

27.2 g of 1,3-dimethyl-4-nitropyrazole-5-carbonitrile and 65 ml of concentrated sulfuric acid are stirred at 80° C. for 6 hours. The mixture is poured into 700 g of ice and water, and the precipitate is filtered off and suspended in ice-water; the suspension is neutralized with sodium bicarbonate to yield 27.3 g of 1,3-dimethyl-4-nitropyrazole-5-carboxamide, mp 164° to 165° C.

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