7,4'-dimethoxy-naringenin-oxime and method for obtaining 7,4'-dimethoxy-naringenin-oxime

摘要

the object of the application is oxime 7,4 '- dimetoksynaringeniny about sack 2 and receive this connection.this method is that the substrate, which is 7,4 '- dimetoksynaringenina model 1, the hydroxylamine hydrochloride and the anhydrous sodium acetate in a mole ratio of at least 1: 1.5: 1.5, and the minimum quantity of alcohol, which is a mixture of reaction.which protects against light and leaves at 35°c to 45°c for a period of from 40 to 50 hours of continuous mixing, and the mixture pours into the ice water.the precipitated sludge draining under reduced pressure, and then the crude product is purified.