Title:
METHOD FOR PRODUCING FLUORENONE
Document Type and Number:
WIPO Patent Application WO/2022/085746
Kind Code:
A1
Abstract:
A method for producing fluorenone comprises the following in the indicated sequence: an oxidation step for oxidizing fluorene in the presence of a C2-3 aliphatic carboxylic acid, metal catalyst, bromine compound, and oxygen; a solvent removal step for removing the aliphatic carboxylic acid; a heating step for heating at 120-350°C; and a distillation step.
Inventors:
SUMI HIROKI (JP)
WATANABE YUKI (JP)
FUJITA HIDEAKI (JP)
NAKAMURA GOH (JP)
KUMANO TATSUYUKI (JP)
WATANABE YUKI (JP)
FUJITA HIDEAKI (JP)
NAKAMURA GOH (JP)
KUMANO TATSUYUKI (JP)
Application Number:
PCT/JP2021/038851
Publication Date:
April 28, 2022
Filing Date:
October 21, 2021
Export Citation:
Assignee:
MITSUBISHI GAS CHEMICAL CO (JP)
International Classes:
B01J31/04; C07C45/36; C07B61/00; C07C45/82; C07C49/675
Foreign References:
| US3038940A | 1962-06-12 | |||
| JP2004115390A | 2004-04-15 | |||
| US2859247A | 1958-11-04 | |||
| JPS58500525A | 1983-04-07 | |||
| JP2001288122A | 2001-10-16 |
Attorney, Agent or Firm:
OHTANI PATENT OFFICE (JP)
Download PDF:
Previous Patent: SAFETY MANAGEMENT SYSTEM
Next Patent: SOLID ELECTROLYTIC CAPACITOR ELEMENT AND SOLID ELECTROLYTIC CAPACITOR
Next Patent: SOLID ELECTROLYTIC CAPACITOR ELEMENT AND SOLID ELECTROLYTIC CAPACITOR