Process for the preparation of unsaturated amino compounds
AssigneeNorvartis AG
InventorsUrs Siegrist, Peter Baumeister
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Abstract
The present invention relates to a process for the preparation of aromatic amino compounds which are substituted by a least one group comprising at least one unsaturated carbon-carbon bond, by catalytic hydrogenation of corresponding aromatic nitro compounds in the presence of a modified noble metal catalyst, wherein the noble metal catalyst used is platinum modified with a metal selected from the group consisting of lead, mercury, bismuth, germanium, cadmium, arsenic, antimony, silver and gold, and to novel noble metal catalysts for use in this process.
Claims33
A process for the preparation of aromatic amino compounds which are substituted by at least one group comprising at least one unsaturated carbon-carbon bond, by catalytic hydrogenation of corresponding aromatic nitro compounds in the presence of a modified noble metal catalyst, which comprises using as noble metal catalyst platinum which is modified with a metal selected from the group consisting of lead, mercury, bismuth, germanium, cadmium, arsenic, antimony, silver and gold.
A catalytic composition comprising platinum modified by a metal selected from the group consisting of lead, mercury, bismuth, germanium, cadmium, arsenic, antimony, silver and gold, which contains as promoter a compound selected from the group of iron, manganese, cobalt, copper, and ruthenium.
Dependencies are inferred from the claim text.