发明名称 |
PROCESSES FOR THE PREPARATION OF AZOXYSTROBIN USING DABCO AS A CATALYST AND NOVEL INTERMEDIATES USED IN THE PROCESSES |
摘要 |
<p>The present invention relates to a process for preparing a compound of formula (IV)
where W is the methyl ( E )-2-(3-methoxy)acrylate group, which comprises the steps of: (i) reacting the compound of formula (IV) where W is the methyl 2-(3,3-dimethoxy)propanoate group with a reagent that will protect the hydroxyl group of that compound from reaction during subsequent demethanolysis; (ii) eliminating methanol from the hydroxyl-protected compound formed in step (i); and (iii) removing the hydroxyl-protecting group formed in step (i) to form a compound of formula (IV) where W is the methyl ( E )-2-(3-methoxy)acrylate group.</p> |
申请公布号 |
PT1891020(E) |
申请公布日期 |
2013.09.02 |
申请号 |
PT20060726760T |
申请日期 |
2006.04.13 |
申请人 |
SYNGENTA LIMITED |
发明人 |
ALAN JOHN WHITTON;EWAN CAMPBELL BOYD;JACK VASS |
分类号 |
C07D239/52;C07C59/64;C07C67/31;C07C67/327;C07C69/734 |
主分类号 |
C07D239/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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