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Schwartz, 1990 - Google Patents

A Novel Route to Aryl Diether Dianhydrides

Schwartz, 1990

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Document ID
6669844733958591193
Author
Schwartz W
Publication year
Publication venue
High Performance Polymers

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Snippet

Aryl diether diphthalic anhydrides have been prepared by the reaction of a diphenol with 4- fluorophthalic anhydride and KF in the presence of a polar, aprotic solvent. The KF acts as an HF acceptor and obviates the need for preparing the disodium salt of the diphenol in a …
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    • C07D209/44Iso-indoles; Hydrogenated iso-indoles
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    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
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    • C07D207/448Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having three double bonds between ring members or between ring members and non-ring members having two doubly-bound oxygen atoms directly attached in positions 2 and 5 with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms, e.g. maleimide
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