Patents by Inventor Doris Hofmann-Moritz

Doris Hofmann-Moritz 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).

  • Phenylethl o-methylcinnamate, a process for preparation and a fragrance composition containing same
    Patent number: 5066640
    Abstract: The invention relates to phenylethyl o-methylcinnamate and a process for its preparation. Phenylethyl o-methylcinnamate is prepared by, first, alkylating ethyl acetoacetate with o-methylbenzyl chloride in the presence of a phase transfer catalyst to yield 2-(o-methylbenzyl)-acetoacetate. Thereafter the 2-(o-methylbenzyl)-acetoacetate yielded in the alkylating step is halogenated to yield ethyl 2-halo-2-(o-methylbenzyl)-acetoacetate. This is followed by degarding the ethyl 2-halo-2-(o-methylbenzyl)-acetoacetate acid. Finally the o-methylcinnamic acid obtained in the degarding step is esterified with 2-phenylethanol into phenylethyl o-methylcinnamate. A fragrance composition utilizing phenylethyl o-methylcinnamate is also disclosed.
    Type: Grant
    Filed: May 11, 1989
    Date of Patent: November 19, 1991
    Assignee: Consortium fur elektrochemische Industrie GmbH
    Inventors: Erdmuthe Voss, Werner Moschinsky, Doris Hofmann-Moritz