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US4082803A Process for preparing 4-chloro-2,5-dimethoxy aniline 失效
制备4-氯-2,5-二甲氧基苯胺的方法

Process for preparing 4-chloro-2,5-dimethoxy aniline
摘要:
The catalytic hydrogenation of 4-chloro-2,5-dimethoxy nitrobenzene can be performed in water with a nickel catalyst if the average particle size is below 0.1 mm. The resulting aniline is reacted with diketene and the so-obtained N-acetoacetyl derivative is an azoic coupling component.
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