Process for making fluorenones

Details Process for making fluorenones Process for making fluorenones

C - Chemistry, Metallurgy

07

C

C07C 49/675 (2006.01) C07C 45/36 (2006.01) C07C 49/587 (2006.01)

Patent

CA 2253746

A process for the oxidation of a fluorene compound to a corresponding fluorenone compound comprises treating the fluorene compound with an oxidizing gas in the presence of a solid alkali metal or alkaline earth metal oxide or hydroxide or a concentrated aqueous solution thereof in a reaction mixture containing a non-aqueous heterocyclic nitrogenous solvent, wherein the reaction mixture is free of a phase transfer agent, for a time sufficient and at a temperature sufficient to convert the fluorene compound to the fluorenone compound.

L'invention concerne un procédé d'oxydation d'un composé fluorène en un composé fluorénone correspondant, qui consiste à traiter le composé fluorène avec un gaz oxydant en présence d'un métal alcalin solide ou d'un oxyde ou hydroxide de métal alcalino-terreux, ou d'une solution aqueuse concentrée de ceux-ci, dans un mélange de réaction contenant un solvant azoté hétérocyclique non aqueux, ledit mélange de réaction étant exempt d'agent de transfert de phase, pendant un temps et à une température suffisants pour convertir le composé fluorène en composé fluorénone.

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