Title:
METHOD FOR PRODUCING FLUORENONE
Document Type and Number:
WIPO Patent Application WO/2022/102502
Kind Code:
A1
Abstract:
A method for producing fluorenone which comprises, in the following order, a pretreatment step in which fluorene is heated in the presence of a lower aliphatic carboxylic acid, a bromine compound, and a metal catalyst and an oxidation step in which the fluorene and oxygen are continuously fed to conduct an oxidation reaction.
Inventors:
WATANABE YUKI (JP)
SUMI HIROKI (JP)
FUJITA HIDEAKI (JP)
NAKAMURA GOH (JP)
KUMANO TATSUYUKI (JP)
SUMI HIROKI (JP)
FUJITA HIDEAKI (JP)
NAKAMURA GOH (JP)
KUMANO TATSUYUKI (JP)
Application Number:
PCT/JP2021/040545
Publication Date:
May 19, 2022
Filing Date:
November 04, 2021
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
C07C45/36; C07B61/00; C07C49/675
Foreign References:
| US3038940A | 1962-06-12 | |||
| DE1940051A1 | 1971-02-18 | |||
| JPH09221447A | 1997-08-26 | |||
| JP2001070798A | 2001-03-21 |
Other References:
DOHI TOSHIFUMI, TAKENAGA NAOKO, GOTO AKIHIRO, FUJIOKA HIROMICHI, KITA YASUYUKI: "Clean and Efficient Benzylic C−H Oxidation in Water Using a Hypervalent Iodine Reagent: Activation of Polymeric Iodosobenzene with KBr in the Presence of Montmorillonite-K10", THE JOURNAL OF ORGANIC CHEMISTRY, AMERICAN CHEMICAL SOCIETY, vol. 73, no. 18, 19 September 2008 (2008-09-19), pages 7365 - 7368, XP055929141, ISSN: 0022-3263, DOI: 10.1021/jo8012435
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
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