Patents by Inventor Eckhard Hichmann

Eckhard Hichmann 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).

  • Stereoselective preparation of Z-1,2-diarylallyl chlorides and the conversion thereof into azolylmethyloxiranes, and novel intermediates
    Patent number: 5268517
    Abstract: The preparation of Z-1,2-diarylallyl chlorides of the general formula I ##STR1## in which R.sup.1 and R.sup.2, independently of one another, are hydrogen, halogen, alkyl, haloalkyl, alkoxy, haloalkoxy or a substituted aromatic radical, and n and m are 1, 2 or 3, by dehydrating chlorohydrins of the formula II ##STR2## in which the radicals are as defined above, at up to 50.degree. C. in an inert ether or carboxylic acid ester as solvent and in the presence of a carboxylic anhydride and an organic or inorganic acid, the conversion thereof into azolylmethyloxiranes, and novel intermediates are described.
    Type: Grant
    Filed: December 7, 1992
    Date of Patent: December 7, 1993
    Assignee: BASF Aktiengesellschaft
    Inventors: Reiner Kober, Rainer Seele, Heinz Isak, Eckhard Hichmann, Norbert Goetz, Thomas Zierke