Patents by Inventor Klaus Kn uhl

Klaus Kn uhl 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).

  • Preparation of N-protected N-alkylated amino acids
    Patent number: 5587506
    Abstract: A process for preparing N-protected N-alkylated amino acids of the formula ##STR1## where R.sup.s and R.sup.1 -R.sup.3 have the meanings indicated in the description comprises adding a compound of the abovementioned formula where R.sup.3 is hydrogen to a solution of a base in a non-protic solvent and subsequently adding an alkylating agent.
    Type: Grant
    Filed: October 6, 1995
    Date of Patent: December 24, 1996
    Assignee: BASF Aktiengesellschaft
    Inventors: Klaus Kn uhl, Ulrich Karl, Stefan M uller, Bernd de Potzolli