发明授权
US4136033A 6-Hydroxypyridone-2 compounds having a cationic group in the 3-position
失效
在3-位上有阳离子的6-羟基吡啶二酮化合物
- 专利标题： 6-Hydroxypyridone-2 compounds having a cationic group in the 3-position
- 专利标题（中）： 在3-位上有阳离子的6-羟基吡啶二酮化合物
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申请号： US483041申请日： 1974-06-25
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公开(公告)号： US4136033A公开(公告)日： 1979-01-23
- 发明人: Willy Steinemann
- 申请人： Willy Steinemann
- 申请人地址： CHX Basel
- 专利权人： Sandoz Ltd.
- 当前专利权人： Sandoz Ltd.
- 当前专利权人地址： CHX Basel
- 优先权： CHX16561/69 19691107; CHX19042/69 19691223; CHX12175/70 19700813; CHX12339/70 19700818
- 主分类号： C09B29/42
- IPC分类号： C09B29/42 ; C09B44/08 ; C07D401/02
摘要：
Compounds of the formula ##STR1## wherein K.sup..sym. is a cationic group, preferably heterocyclic,R is hydrogen or an organic radical, preferably alkyl, phenyl or acyl,R.sub.1 is hydrogen, hydrocarbyl, substituted hydrocarbyl, heterocyclyl, substituted heterocyclyl, amino or substituted amino, andA.sup..crclbar. is an anion,Are useful as intermediates in the synthesis of azo dyes of the formula ##STR2## wherein D is an aromatic carbocyclic or heterocyclic diazo component radical, andK.sup..sym., r, r.sub.1 and A.sup..crclbar. are as defined above.
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