Patents by Inventor Rolf Birk

Rolf Birk 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 E/Z stereoselective synthesis of homochiral five and six ring intermediate products
    Patent number: 4964846
    Abstract: This invention comprises a process for the production of unsymmetrical olefins from prochiral symmetrical ketones by addition of lithiosulfoximine from n-butyllithium and N-substituted S-methyl-S-phenyl-sulfoximine derivatives and then reaction with n-butyllithium/trimethychlorosilane.
    Type: Grant
    Filed: November 21, 1988
    Date of Patent: October 23, 1990
    Assignee: Schering Aktiengesellschaft
    Inventors: Hans-Joachim Gais, Irene Erdelmeier, Rolf Birk