Process for the preparation of oxy-diphthalic anhydrides

Details Process for the preparation of oxy-diphthalic anhydrides Process for the preparation of oxy-diphthalic anhydrides

C - Chemistry, Metallurgy

07

D

260/364.8

C07D 307/89 (2006.01) C07C 51/567 (2006.01)

Patent

CA 1269390

PROCESS FOR THE PREPARATION OF OXY-DIPHTHALIC ANHYDRIDES ABSTRACT Oxy-diphthalic anhydrides are prepared by reacting a halophthalic anhydride with water and an alkali metal compound such as KF, CsF or K2CO3 in the presence of a polar, aprotic solvent.

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