PURPOSE: To obtain the subject deriv. capable of easily regenerating a polyimido- affinitive substance useful for a condenser by supplying electrons to an aromatic part to bring them into contact with a specific electrophilic reagent and allowing an anionic elimination group to be present.
CONSTITUTION: Electrons are supplied to a carbonyl group conjugated with an aromatic part and the carbonyl group conjugated with the aromatic part having electrons is brought into contact with an electrophilic reagent containing at least one atom selected from the group consisting of S, C, P and Si to obtain a deriv. of a compd. having at least one anionic eliminable group bonded to the atom and conjugated with the aromatic part for producing an objective substance selected from the group consisting of substituted thioether, ester, ether, phosphate and silyl ether.
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DANIERU PIITAA MORISU
ARUFURETSUDO BIIBETSUKU
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