Patents by Inventor Harvey W. Posvic

Harvey W. Posvic 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 3-(3-methyl-2-buten-1-yl)-2,4-pentanedione and related dicarbonyl compounds
    Patent number: 6049010
    Abstract: A method for preparation of a dicarbonyl compound of the following formula ##STR1## by reacting a conjugated alkadiene compound of the formula ##STR2## with a 1,3-dicarbonyl compound of the formula ##STR3## in the presence of an acid catalyst. The products of the method are useful in the preparation of compounds such as vitamins A and E, various carotenoids, Retin A, dehydrolinalool, pseudoionone, citral, and linalool.
    Type: Grant
    Filed: September 29, 1998
    Date of Patent: April 11, 2000
    Assignee: Loyola University of Chicago
    Inventors: James H. Babler, Harvey W. Posvic
  • C-15 phosphonate reagent compositions for the manufacture of compounds such as lycopene and methods of synthesizing the same
    Patent number: 5973179
    Abstract: The present invention describes novel phosphonate reagent compositions of the formula: ##STR1## wherein R and R'=C.sub.1 -C.sub.4 alkyl groups, or R, R'=(CH.sub.2).sub.n (n=2 or 3) or [CH.sub.2 C(CH.sub.3).sub.2 CH.sub.2 ].The invention also describes allylic C-15 phosphonate compounds of the formula: ##STR2## wherein R and R'=C.sub.1 -C.sub.4 alkyl groups. The invention also describes methods of preparing phosphonate reagent compositions (4), allylic phosphonate compounds (5), and lycopene.
    Type: Grant
    Filed: November 19, 1998
    Date of Patent: October 26, 1999
    Assignee: Loyola University of Chicago
    Inventors: James H. Babler, Harvey W. Posvic