发明授权
US4370499A 3-Nitro-acetoacetanilides, processes for their preparation and their use
失效
3-硝基乙酰乙酰苯胺,其制备方法及其用途
- 专利标题: 3-Nitro-acetoacetanilides, processes for their preparation and their use
- 专利标题(中): 3-硝基乙酰乙酰苯胺,其制备方法及其用途
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申请号: US263388申请日: 1981-05-13
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公开(公告)号: US4370499A公开(公告)日: 1983-01-25
- 发明人: Heinz U. Blank , Erich Wolters , Karl W. Muller , Gunter Rottloff
- 申请人: Heinz U. Blank , Erich Wolters , Karl W. Muller , Gunter Rottloff
- 申请人地址: DEX Leverkusen
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX3020443 19800529
- 主分类号: G03C7/36
- IPC分类号: G03C7/36 ; C07C67/00 ; C07C231/00 ; C07C231/02 ; C07C231/10 ; C07C231/12 ; C07C233/00 ; C07C233/02 ; C07C233/12 ; C07C235/80 ; C07C241/00 ; C07C251/04 ; C07C313/00 ; C07C323/41 ; C09B55/00 ; G03C7/32 ; C07C103/34
摘要:
3-Nitro-acetoacetanilides of the formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 independently of one another represent hydrogen, alkyl, cycloalkyl or aryl, it being possible for two of the said radicals to form a cycloaliphatic ring together with the carbon atom on which they are substituents, andR.sup.4 and R.sup.5 independently of one another denote hydrogen, alkyl, aralkyl, aryl, alkoxy, alkylthio, aralkoxy, aralkylthio, aryloxy, arylthio, halogen, nitro or amino disubstituted by alkyl, aralkyl or aryl, andR.sup.4 and R.sup.5, when they are adjacent, can be parts of a fused cycloaliphatic or aromatic ring,are described as well as methods for its preparation such as by reaction of an acetoacetic acid compound with a 3-nitro-aniline under condensation conditions, or, by reaction of an enamine with 3-nitro-phenyl isocyanate. The 3-nitro-acetoacetanilides are useful intermediates in the preparation of coupling components for color photography.
公开/授权文献
- US5429405A Vehicle cap 公开/授权日:1995-07-04
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