Title:
ノルボルネン又はノルボルナン構造を有するジカルボン酸若しくはその誘導体の立体異性体を分離する方法
Document Type and Number:
Japanese Patent JP4654914
Kind Code:
B2
Abstract:
A method of efficiently extracting a high-purity stereoisomer from a mixture comprising the endo isomer and the exo isomer of a dicarboxylic acid having a norbomene or norbomane structure, or a derivative thereof. The present invention relates to a method of separating the endo isomer and the exo isomer of a dicarboxylic acid represented by a general formula (1) or (2) or a derivative thereof, and includes the step of stirring and mixing a mixture comprising mainly the endo isomer of the dicarboxylic acid represented by the general formula (1) or (2) or a derivative thereof, and the exo isomer of the dicarboxylic acid represented by the general formula (1) or (2) or a derivative thereof, with a basic compound and a solvent.
(wherein, R 1 to R 8 represent a hydrogen atom, methyl group, ethyl group, or butyl group),
(wherein, R' 1 to R' 10 represent a hydrogen atom, methyl group, ethyl group, or butyl group)
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Inventors:
Toru Suzuki
Tetsuro Yamanaka
Tetsuro Yamanaka
Application Number:
JP2005513679A
Publication Date:
March 23, 2011
Filing Date:
September 03, 2004
Export Citation:
Assignee:
Hitachi Chemical Co., Ltd.
International Classes:
C07C51/487; C07C51/00; C07C51/087; C07C61/13; C07C61/29
Domestic Patent References:
| JP2004530006A | 2004-09-30 | |||
| JPH0399040A | 1991-04-24 | |||
| JP2002173452A | 2002-06-21 | |||
| JPH11305444A | 1999-11-05 | |||
| JP2001166481A | 2001-06-22 |
Attorney, Agent or Firm:
Hidekazu Miyoshi