Patents by Inventor Robert C. Ewins

Robert C. Ewins 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 organo-magnesium halides
    Patent number: 5242625
    Abstract: Process for the preparation of compounds of formula (I):Y--Mg--X (I)wherein Y is allyl, or an optionally substituted phenyl or optionally substituted benzyl group, and X is a halogen, by reaction of a compound of formula (II):Y--X (II)wherein Y and X have the meanings given above, with magnesium in tertiary-butylmethyl ether solvent, characterized in that the molar ratio of magnesium to compound of formula (II) is from 1:1 to 2:1 and the reaction is carried out at 45.degree. C. or above.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: September 7, 1993
    Assignee: Imperial Chemical Industries PLC
    Inventors: Raymond V. H. Jones, Robert C. Ewins, Robert M. Mellor