Patents by Inventor Graham M. Mott

Graham M. Mott has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5041669
    Abstract: Arylalkylamines (as a sulfate salt) e.g. tyramine sulfate, are prepared by reacting substituted or unsubstituted arylalkylketones with a lower alkylnitrite in the presence of hydrogen chloride in a dipolar aprotic solvent, then combining the reaction mixture with water and extracting it with a lower alkyl ester or alcohol to recover an aryl-.alpha.-oximinoalkylketone extract. The extract, combined with a supported hydrogenation catalyst (e.g. palladium on carbon) in a nonaqueous reaction medium of a major proportion of a mildly protic carboxylic acid (e.g. acetic acid) and a minor proportion of a strong inorganic acid (e.g. sulfuric acid), which is effective in the presence of the catalyst for secondary alcohol dehydration and active as an absorbant for water produced in the dehydration reaction, is hydrogenated to produce the arylalkylamine sulfate sale.
    Type: Grant
    Filed: October 16, 1990
    Date of Patent: August 20, 1991
    Assignee: Hoechst Celanese Corporation
    Inventors: Ahmed M. Tafesh, Graham M. Mott