Patents by Inventor Otto Vostrowsky

Otto Vostrowsky 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 preparing cis-olefins
    Patent number: 4118406
    Abstract: A process for preparing cis-olefins of the formula ##STR1## where R ia alkyl or alkenyl and R.sup.1 is alkyl and alkenyl, both optionally substituted by hydroxy, carbalkoxy or acyloxy, which comprises an ylide solution of the compound R--CH.sub.2 --P.sup..sym. (C.sub.6 H.sub.5).sub.3 Br.sup..crclbar. in hexaalkyl phosphoric acid traimide and adding an aldehyde of the formula R.sup.1 --CHO.
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: October 3, 1978
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Jurgen Bestmann, Werner Theo Stransky, Otto Vostrowsky
  • Process for preparing cis-olefins
    Patent number: 4057593
    Abstract: A process for preparing cis-olefins of the formula ##STR1## where R is alkyl or alkenyl and R.sup.1 is alkyl and alkenyl, both optionally substituted by hydroxy, carbalkoxy or acyloxy, which comprises an ylide solution of the compound R--CH.sub.2 --P.sup.+ (C.sub.6 H.sub.5).sub.3 Br.sup.- in hexaalkyl phosphoric acid triamide and adding an aldehyde of the formula R.sup.1 --CHO.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: November 8, 1977
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Hans Jurgen Bestmann, Werner Theo Stransky, Otto Vostrowsky