Method of preparing 1-amino-2, 6-dimethylpiperidine
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United States of America Patent
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Apr 23, 1996
Grant Date -
N/A
app pub date -
May 17, 1994
filing date -
Nov 20, 1991
priority date (Note) -
Expired
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Abstract
The present invention relates to improved processes for the preparation of 1-amino-2,6-dimethylpiperidine whereby the yield is more than 90%. The processes involve the hydrogenation of 1-nitroso-2,6-dimethylpiperidine in the presence of a palladium catalyst which is partly poisoned with iron ions, in an aqueous solvent, and are characterized by the inclusion of at least one surfactant. The surfactant preferably is anionic or nonionic.
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