Acetic Anhydride → Acetic acid, 2-(4-methylphenyl)hydrazide

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반응 단계

104.8 g of 1-(4-methylphenyl)hydrazine hydrochloride are suspended in 525 ml of isopropyl acetate, a solution of 104.8 g of potassium carbonate in 300 ml of water is added and then the mixture is stirred until the solid has disappeared. 77.4 g of acetic anhydride are added while maintaining the temperature below 20° C. and then the mixture is left stirring at 20° C. A precipitate is observed to form, which precipitate disappears when the mixture is heated at approximately 55-60° C. The organic phase is washed twice with 200 ml of water and is then cooled at 0-5° C. overnight. The product formed is recovered by filtration and is then washed twice with 100 ml of MTBE.

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