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US 2025/0129005 A1Published application
Method for producing fluorenone
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsHiroki SUMI, Yuki WATANABE, Hideaki FUJITA, Goh NAKAMURA, Tatsuyuki KUMANO
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Abstract
Provided is a method for producing fluorenone comprising an oxidation step of oxidizing fluorene in the presence of an aliphatic carboxylic acid having 2 to 3 carbon atoms, a metal catalyst, a bromine compound, and oxygen, and a phosphoric acid treatment step of bringing an oxidation reaction mixture into contact with phosphoric acid in the order indicated.
Claims20
A method for producing fluorenone, the method comprising:
- oxidizing fluorene in the presence of an aliphatic carboxylic acid having 2 to 3 carbon atoms, a metal catalyst, a bromine compound, and oxygen to obtain an oxidation reaction mixture;
- and
- contacting the oxidation reaction mixture with phosphoric acid.
Dependencies are inferred from the claim text.