| 发明名称 |
PREPARATION OF DYE INTERMEDIATE |
| 摘要 |
A process for the preparation of compounds of the formula
<IMAGE>
which is characterised in that a compound of the formula
<IMAGE>
is reacted with a halogenating agent in the presence of a compound of the formula
NA (2a> and in which the symbols have the meaning indicated in Claim 1, is described. The compounds obtainable by the process are useful coupling components for the synthesis of cationic dyes.
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| 申请公布号 |
JPH02189367(A) |
申请公布日期 |
1990.07.25 |
| 申请号 |
JP19890300966 |
申请日期 |
1989.11.21 |
| 申请人 |
CIBA GEIGY AG |
发明人 |
JIYANOSU BUINKOSU;UIRUFURIIDO HERUTAA |
| 分类号 |
C09B44/10;C07C213/02;C07C241/02;C07D213/20;C07D295/13;C09B44/12 |
主分类号 |
C09B44/10 |
| 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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