Title:
CRYSTALS OF BISNAPHTHOL HAVING FLUORENE SKELETON AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/149754
Kind Code:
A1
Abstract:
Provided are crystals (A) of the compound represented by formula (1) which, in analysis by X-ray powder diffractometry with a Cu-Kα line, gives a diffraction pattern having diffraction peaks at 2θ's of 9.6°±0.2°, 14.2°±0.2°, 17.6°±0.2°, and 20.7°±0.2° and crystals (B) of the compound represented by formula (1) which, in the analysis, show peaks at 2θ's of 17.8°±0.2°, 20.6°±0.2°, 22.0°±0.2°, and 26.9°±0.2°.
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Inventors:
YAMASAWA HIROKI (JP)
FUKUDA AKIRA (JP)
SAIKI TAKAFUMI (JP)
FUKUDA AKIRA (JP)
SAIKI TAKAFUMI (JP)
Application Number:
PCT/JP2021/001982
Publication Date:
July 29, 2021
Filing Date:
January 21, 2021
Export Citation:
Assignee:
TAOKA CHEMICAL CO LTD (JP)
International Classes:
C07B63/00; C07C37/84; C07C39/17
Foreign References:
| JP2012207008A | 2012-10-25 | |||
| JP2013032390A | 2013-02-14 | |||
| JPH01132541A | 1989-05-25 | |||
| CN108586205A | 2018-09-28 | |||
| JP2006193505A | 2006-07-27 | |||
| JP2018076245A | 2018-05-17 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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