Patents by Inventor Rattan K. Gujadhur

Rattan K. Gujadhur 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).

  • Methods for formation of aryl-sulfur and aryl-selenium compounds using copper(I) catalysts
    Patent number: 7112697
    Abstract: A mild, palladium-free synthetic protocol for the cross-coupling reaction of vinyl or aryl iodides and thiols or selenols using, in certain embodiments, 10 mol % CuI and 10 mol % neocuproine, with NaOt-Bu as the base, in toluene at 110 ° C. A variety of vinyl/aryl sulfides and vinyl/aryl selenides can be synthesized in excellent yields from readily available iodides and thiols or selenols.
    Type: Grant
    Filed: July 12, 2004
    Date of Patent: September 26, 2006
    Assignee: University of Massachusetts
    Inventors: Dhandapani Venkataraman, Craig G. Bates, Rattan K. Gujadhur