To provide a method for producing a conjugated unsaturated carbonyl compound, with which the used amount of an imide compound catalyst having a phthalic acid-based skeleton is reduced without lowering the yield of the conjugated unsaturated carbonyl compound.
An unsaturated compound containing a methylene group at the adjacent position of a carbon-carbon double bond is reacted with oxygen in the presence of a catalyst composed of an imide compound A represented by formula (1) [R1, R2, R3 and R4 are each a hydrogen atom, an alkyl group or the like; X is an oxygen atom or an -OR group (R is a hydrogen atom or a hydroxy-protecting group)] and an imide compound B condensed with an aromatic ring to give a conjugated unsaturated carbonyl compound in which an oxo group is introduced into the carbon atom of the methylene group.
KITAYAMA KENJI
YAMAGUCHI HIROYOSHI
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