Process for the preparation of fluorene-9-carboxylic acid

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United States of America Patent

PATENT NO 4564700
SERIAL NO

06552459

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An improved process for the preparation of fluorene-9-carboxylic acid comprising reacting fluorene and a dialkyl carbonate with alkyls of 1 to 5 carbon atoms in the presence of a member of the group consisting of alkali metal hydrides or potassium alcoholate of an aliphatic alcohol of 1 to 5 carbon atoms, neutralizing the mixture and saponifying the resulting fluorene-9-carboxylic acid ester to obtain fluorene-9-carboxylic acid in good yields.

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RUTGERS ORGANICS GMBH68305 MANNHEIM

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Inventor Name Address # of filed Patents Total Citations
Fickert, Werner Mannheim, DE 21 85
Orth, Winfried Hassloch/Pflaz, DE 24 52
Pastorek, Emmerich Hemsbach, DE 8 11

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