FIELD: organic chemistry, chemical technology.
SUBSTANCE: invention relates to a method for preparing compound of the formula (I) given in the invention claim wherein substituted are indicated in the description. Method involves interaction of ketone of the formula (II) given in the invention claim with succinic acid anhydride and alkoxide base to yield compound of the formula (III):
. The latter is subjected for interaction with compound of the formula (IV) given in the invention claim to obtain compound of the formula (V):
and interaction of compound of the formula (V) with alcohol to yield the corresponding ester of the formula (VI):
, and interaction of ester with N-methylhydroxylamine. Invention provides enhancing yield, reducing cost as compared to the known methods.
EFFECT: improved preparing method.
9 cl, 6 ex
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