Patents by Inventor Dieter Steegmuller

Dieter Steegmuller 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).

  • Method of preparing aryl-(1-phthalimido)-alkyl ketones
    Patent number: 4945168
    Abstract: Aryl-(1-phthalimido)-alkyl ketones of the general formula ##STR1## are prepared by reacting a suitable aromatic compound with ##STR2## at least one hydrogen atom on the aromatic nucleus in an inert solvent and in the presence of iron-(III)-chloride with an N-phthaloyl-2-amino carboxylic acid chloride of the general formula ##STR3## They can be converted into corresponding 2-phenethanolamines or 2-phenethylamines by reduction of the keto group.
    Type: Grant
    Filed: August 22, 1988
    Date of Patent: July 31, 1990
    Assignee: Degussa Aktiengesellschaft
    Inventors: Franz Effenberger, Dieter Steegmuller