Patents by Inventor Laszlo Wertheimer

Laszlo Wertheimer 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).

  • Process for the palladium catalyzed coupling of a diazonium salt with an olefinic bond
    Patent number: 5274171
    Abstract: A "one-pot" process for the palladium catalyzed coupling of a diazonium salt with an olefinic bond, in the aqueous medium in which the diazonium salt is made, by employing a carboxylic acid as a solvent. Arylacrylic acids and their esters, e.g. the cinnamates, can be produced at low catalyst concentration without first isolating the diazonium salt. The process is applied to the synthesis of 2-ethylhexyl p-methoxycinnamate.
    Type: Grant
    Filed: January 22, 1992
    Date of Patent: December 28, 1993
    Assignee: Givaudan-Roure Corporation
    Inventors: Alan J. Chalk, Joseph A. Virgilio, Laszlo Wertheimer, Theresa B. Wertheimer