Preparation of halogenated phthalic anhydrides

Details Preparation of halogenated phthalic anhydrides Preparation of halogenated phthalic anhydrides

1990-06-14

1991-10-22

Shen, Cecilia

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549240, 549262, C07D30777, C07D30736

Patent

active

050596977

ABSTRACT:
A process for the aromatization of 4-chlorotetrahydrophthalic anhydride and 4,5-dichlorotetrahydrophthalic anhydride which comprises heating a solution of either substance in the presence of activated carbon and in the partial absence of air.

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