发明名称 |
PROCESS FOR PRODUCING HIGH PURITY 3,5-DIHYDROXY-6-HEPTENOIC ACID DERIVATIVE |
摘要 |
<p>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.</p> |
申请公布号 |
WO2005033083(A1) |
申请公布日期 |
2005.04.14 |
申请号 |
WO2004JP14289 |
申请日期 |
2004.09.22 |
申请人 |
NISSAN CHEMICAL INDUSTRIES, LTD.;YOSHIMURA, YUJI;YASUKAWA, MASAMI;MORIKIYO, SYUJI;TAKADA, YASUTAKA;MATSUMOTO, HIROO |
发明人 |
YOSHIMURA, YUJI;YASUKAWA, MASAMI;MORIKIYO, SYUJI;TAKADA, YASUTAKA;MATSUMOTO, HIROO |
分类号 |
C07D215/14;(IPC1-7):C07D215/14 |
主分类号 |
C07D215/14 |
代理机构 |
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地址 |
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