Process for the preparation of substituted aromatic amino compounds
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United States of America Patent
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Mar 2, 1999
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N/A
app pub date -
Oct 1, 1997
filing date -
May 18, 1995
priority date (Note) -
Expired
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Abstract
The invention relates to processes for preparing substituted aromatic amino compounds which contain at least one unsaturated --CN bond or carbonyl group on the aromatic radical or in a side chain, by catalytic hydrogenation of appropriate substituted aromatic nitro compounds in the presence of a modified noble metal catalyst of platinum which is modified with a metal selected from lead, mercury, bismuth, germanium, cadmium, arsenic, antimony, silver and gold.
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