发明授权
US5286868A Process for the preparation of substituted and
unsubstituted-2,3-pyridinedicarboxylates from chloromaleate or
chlorofumurate or mixtures thereof
失效
由氯马来酸盐或氯仿或其混合物制备取代和未取代的2,3-吡啶二羧酸酯的方法
- 专利标题： Process for the preparation of substituted and unsubstituted-2,3-pyridinedicarboxylates from chloromaleate or chlorofumurate or mixtures thereof
- 专利标题（中）： 由氯马来酸盐或氯仿或其混合物制备取代和未取代的2,3-吡啶二羧酸酯的方法
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申请号： US877286申请日： 1992-05-01
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公开(公告)号： US5286868A公开(公告)日： 1994-02-15
- 发明人: Albert A. Cevasco , George A. Chiarello , William F. Rieker
- 申请人： Albert A. Cevasco , George A. Chiarello , William F. Rieker
- 申请人地址： NJ Wayne
- 专利权人： American Cyanamid Company
- 当前专利权人： American Cyanamid Company
- 当前专利权人地址： NJ Wayne
- 主分类号： C07D213/803
- IPC分类号： C07D213/803 ; C07D213/80 ; C07D213/69
摘要：
There is provided a process for the preparation of dialkyl pyridinedicarboxylate compounds and derivatives thereof by reacting a dialkyl chloromaleate or chlorofumarate or a mixture thereof with an ammonium salt optionally in the presence of ammonia and an appropriately substituted .alpha.,.beta.-unsaturated aldehyde or ketone.
公开/授权文献
- US4259603A Electric motor 公开/授权日：1981-03-31
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