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US 12,715,831 B2Granted
Method for producing fluorenone
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsYuki Watanabe, Hiroki Sumi, Hideaki Fujita, Goh Nakamura, Tatsuyuki Kumano
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Abstract
A method for producing fluorenone including a pretreatment step of heating fluorene in the presence of a lower aliphatic carboxylic acid, a bromine compound, and a metal catalyst, and an oxidation step of continuously supplying fluorene and oxygen to perform an oxidation reaction, in the order indicated.
Claims20
A method for producing fluorenone, the method comprising, in the order indicated:
- heating fluorene in the presence of a lower aliphatic carboxylic acid, a bromine compound, and a metal catalyst;
- and
- continuously supplying fluorene and oxygen to perform an oxidation reaction.
Dependencies are inferred from the claim text.