Title:
PRODUCTION METHOD FOR CYCLIC COMPOUND OR DERIVATIVE THEREOF
Document Type and Number:
WIPO Patent Application WO/2021/193565
Kind Code:
A1
Abstract:
In a preferred embodiment, this production method for a cyclic compound or a derivative thereof has: a drying step for subjecting a feedstock liquid containing the cyclic compound or the derivative thereof to a drying treatment to obtain a dried product; an extraction step for extracting the cyclic compound or the derivative thereof from the dried product into an extraction solvent to obtain an extraction solution; and a precipitation step for precipitating the cyclic compound or the derivative thereof from the extraction solution. The drying treatment is a treatment in which the feedstock liquid is heated at a temperature of 65-125°C under a pressure of 10 Pa or less.
Inventors:
TACHIBANA KENYA (JP)
FUJIWARA DAISUKE (JP)
MURATA RYUICHI (JP)
FUJIWARA DAISUKE (JP)
MURATA RYUICHI (JP)
Application Number:
PCT/JP2021/011787
Publication Date:
September 30, 2021
Filing Date:
March 22, 2021
Export Citation:
Assignee:
SUMITOMO BAKELITE CO (JP)
International Classes:
C07C51/43; B01D9/02; C07C62/32; C07C65/03
Domestic Patent References:
| WO2020040017A1 | 2020-02-27 | |||
| WO2001068891A1 | 2001-09-20 | |||
| WO2014081275A1 | 2014-05-30 |
Foreign References:
| JP2001011013A | 2001-01-16 | |||
| JP2021038157A | 2021-03-11 |
Other References:
HIRAYAMA NORIAKI: "Handbook of organic compounds crystallization - principles and know-how", 1 January 2008, XX , JP , ISBN: 978-4-621-07991-1, article NORIAKI HIRAYAMA: "Passage, YUKI KAGOBUTSU KESSHO SAKUSEI HANDBOOK -GENRI TO KNOW HOW [Handbook of organic compound crystal preparation: principle and know-how]", pages: 22 - 23, XP009508206
Attorney, Agent or Firm:
ASAHI, Kazuo et al. (JP)
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