Title:
PROCESS FOR PURIFICATION OF POLYCYCLIC COMPOUNDS, PROCESS FOR PRODUCTION OF POLYCYCLIC COMPOUNDS, AND USES OF POLYCYCLIC COMPOUNDS
Document Type and Number:
WIPO Patent Application WO/2008/059702
Kind Code:
A1
Abstract:
The invention provides a process for production of polycyclic compounds substantially
free from impurities such as sulfuric acid. The process comprises the step of
synthesizing a polycyclic compound having a -SO3M group through sulfonation,
the step of mixing the obtained synthetic with an organic solvent in which SO4
2-
or SO3
- is soluble and in which the polycyclic compound is
slightly soluble to prepare a dispersion, and the step of filtering the dispersion
to separate the polycyclic compound. Examples of the polycyclic compounds include
quinoxaline derivatives represented by the general formula(I).
Inventors:
MATSUDA SHOICHI (JP)
MIYAZAKI JUNZO (JP)
MIYAZAKI JUNZO (JP)
Application Number:
PCT/JP2007/070814
Publication Date:
May 22, 2008
Filing Date:
October 25, 2007
Export Citation:
Assignee:
NITTO DENKO CORP (JP)
MATSUDA SHOICHI (JP)
MIYAZAKI JUNZO (JP)
MATSUDA SHOICHI (JP)
MIYAZAKI JUNZO (JP)
International Classes:
C07D241/36; C07D235/04; G02B5/30
Domestic Patent References:
| WO2007042788A2 | 2007-04-19 | |||
| WO2005003132A1 | 2005-01-13 | |||
| WO2004096805A2 | 2004-11-11 | |||
| WO2005051926A1 | 2005-06-09 |
Foreign References:
| JPH08511109A | 1996-11-19 | |||
| JP2005352322A | 2005-12-22 |
Other References:
SCHNEIDER T. ET AL.: "Oriented Monolayers Prepared from Lyotrophic Chromonic Liquid Crystal", LANGMUIR, vol. 21, no. 6, 2005, pages 2300 - 2307, XP003022563
Attorney, Agent or Firm:
OHNAKA, Minoru et al. (3-6 Minamisemba 2-chomea,Chuo-ku, Osaka-shi, Osaka 81, JP)
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