Title:
CRYSTALLINE POLYMORPH OF FLUORENE DERIVATIVE AND PROCESS FOR PRODUCTION THEREOF
Document Type and Number:
WIPO Patent Application WO/2008/099765
Kind Code:
A1
Abstract:
Disclosed is a process for producing a crystal polymorph of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene, which comprises the steps of: reacting fluorenone with 2-phenoxyethanol in the presence of a heteropoly acid; causing the crystallization of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene from the reaction mixture at a temperature lower than 50°C to produce a crude product of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene; dissolving the crude product in at least one solvent selected from the group consisting of an aromatic hydrocarbon solvent, a ketone solvent and an ester solvent; and causing the crystallization of 9,9-bis(4-(2-hydroxyethoxy)phenyl)fluorene from the reaction mixture at a temperature of 50°C or higher.
Inventors:
FUJII KATSUHIRO (JP)
FUKUI KOTA (JP)
FUKUI KOTA (JP)
Application Number:
PCT/JP2008/052082
Publication Date:
August 21, 2008
Filing Date:
February 01, 2008
Export Citation:
Assignee:
TAOKA CHEMICAL CO LTD (JP)
FUJII KATSUHIRO (JP)
FUKUI KOTA (JP)
FUJII KATSUHIRO (JP)
FUKUI KOTA (JP)
International Classes:
C07C41/40; C07C41/30; C07C43/23
Foreign References:
| JP2007023016A | 2007-02-01 | |||
| JP2005104898A | 2005-04-21 | |||
| JPH1045656A | 1998-02-17 | |||
| JPH07165657A | 1995-06-27 | |||
| JP2007023016A | 2007-02-01 |
Other References:
JOURNAL OF APPLIED POLYMER SCIENCE, vol. 58, 1995, pages 1189 - 1197
Attorney, Agent or Firm:
NAKAYAMA, Tohru et al. (Limited 5-33, Kitahama 4-chome, Chuo-ku, Osaka-sh, Osaka 50, JP)
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