Patents by Inventor David E. Seelye

David E. Seelye 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 of preparation of tetrafluoro 2,3-dihydrobenzofurans
    Patent number: 4730062
    Abstract: Tetrafluorobenzofurans of the formula ##STR1## are prepared by contacting, at elevated temperature in an aprotic solvent, an ether of the formula ##STR2## with a catalytic mixture of metallic cooper and a polydentate or other ligand, wherein R.sup.1 is hydrogen, nitro, amino, phthalimido or acetylimido, R.sup.2 is at least one of hydrogen, halo, cyano, alkyl, hydroxy, alkoxy, acyl, acyloxy, alkoxycarbonyl, alkoxycarbonylalkyl, phenyl, phenyloxy, trifluoromethyl or dialkylamino. The products are intermediates in the preparation of pyrazoline insecticides.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: March 8, 1988
    Assignee: FMC Corporation
    Inventors: David E. Seelye, Ernest L. Plummer
  • Copper-catalyzed biaromatic coupling process
    Patent number: 4423234
    Abstract: Improved yields of biaromatic compounds, e.g., unsymmetrical biphenyl compounds, result by incorporating metallic copper in a non-aqueous diazonium-type coupling reaction.
    Type: Grant
    Filed: May 17, 1982
    Date of Patent: December 27, 1983
    Assignee: FMC Corporation
    Inventors: Ernest L. Plummer, David E. Seelye