Patents by Inventor David A. Cherry

David A. Cherry 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 producing 1-(5-substituted-2-ethynylphenyl)-2-propanones
    Patent number: 4798893
    Abstract: A method for the synthesis of the 2-propanone (I) is described starting from alkoxide (II) through the lactone (IV). ##STR1## Excellent control of the location of the substitution on the phenyl ring is achieved and the reaction proceeds in high yield.
    Type: Grant
    Filed: September 21, 1987
    Date of Patent: January 17, 1989
    Assignee: McNeilab, Inc.
    Inventors: David A. Cherry, Cynthia A. Maryanoff, John E. Mills, Roy A. Olofson, James D. Rodgers