FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for preparing 2-propionyl-5-methylfuran. Method involves the acylation reaction of 2-methylfuran with propionic anhydride at heating in the presence of anhydrous ortho-phosphoric acid as a catalyst in the mole ratio 2-methylfuran : propionic anhydride = 1:(1.1-1.2) at temperature 130-135°C followed by cooling the reaction mass, its treatment with 10-25% ammonia an aqueous solution and isolation of the end substance. Catalyst is used in the amount 3-5 wt.-%. Invention provides simplifying the process.
EFFECT: improved preparing method.
2 cl, 2 ex
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