Title:
高純度の3,5-ジヒドロキシ-6-ヘプテン酸誘導体の製造方法
Document Type and Number:
Japanese Patent JP2007507417
Kind Code:
A
Abstract:
A process for producing a high purity 3,5-dihydroxy6-heptenoic acid derivative by controlling the content of impurities such as denatured substances, is provided. When a 3,5-dihydroxy-6-heptenoic acid derivative is produced by a process which comprises a step of contacting the 3,5-dihydroxy-6-heptenoic acid derivative of the formula (1) wherein R is a C1-4 alkyl group, with a C1-4 lower alcohol-containing solvent, an alcohol containing solvent having its content of an oxidizing substance lowered, is used to at most 0.05 molar equivalent to a 3,5-dihydroxy-6-heptenoic acid derivative, to suppress impurities contained in the 3,5-dihydroxy-6heptenoic acid derivative.
Inventors:
Yuji Yoshimura
Yasukawa Mami
Shuji Morishiki
Yasutaka Takada
Hiroo Matsumoto
Yasukawa Mami
Shuji Morishiki
Yasutaka Takada
Hiroo Matsumoto
Application Number:
JP2006515419A
Publication Date:
March 29, 2007
Filing Date:
September 22, 2004
Export Citation:
Assignee:
Nissan Chemical Industry Co., Ltd.
International Classes:
C07D215/14
Foreign References:
| WO2004026838A1 | 2004-04-01 | |||
| WO1995023125A1 | 1995-08-31 | |||
| WO2002030903A1 | 2002-04-18 |
Attorney, Agent or Firm:
Kenji Izumina
Toshiharu Ogawa
Ryozo Yamamoto
Toshiharu Ogawa
Ryozo Yamamoto