FIELD: chemistry.
SUBSTANCE: invention relates to organic chemistry - method of producing 5,6-dihydro-4H-furo[2′,3′:3,4]cyclohepta[1,2-b]benzofuran derivatives formulas 1 a-j, where
which involves reaction of 2-methylfuran with substituted salicylic aldehydes at heating to 85 °C in 1,2-dichloroethane in presence of copper bromide (II) catalyst during 3 hours.
EFFECT: these compounds are of interest in synthesis of pharmaceutical substances.
1 cl, 2 tbl, 10 ex
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