Patents by Inventor Viktor Zhdankin

Viktor Zhdankin 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).

  • Prescursors for and synthesis of mono- and difunctionalized acetylenes and difunctional 1,3-diynes
    Patent number: 5286901
    Abstract: Precursors and methods for the synthesis of mono- and difunctionalized acetylenes are described. The invention includes novel tricoordinate iodonium transfer reagents and novel alkynyldi(phenyliodonium) salts, both of which are precursors for the functionalized acetylenes. The iodonium transfer reagents take the general form of mixed iodonium sulfonates PhI.sup.+ (X)OSO.sub.2 R.sub.f, where X may be OAc, NHAc, NCO, or CN. These mixed iodonium sulfonates are produced by reaction of iodosobenzene with certain substituted trimethylsilanes.To make the alkynyldi(phenyliodonium) salt PhI.sup.+ C.tbd.CI.sup.+ Ph.cndot.2 R.sub.f SO.sub.3.sup.-,a mixed iodonium sulfonate is reacted with a bistin acetylene of the kind R'.sub.3 SnC.tbd.CSnR".sub.3. Alternatively, the reaction may be performed with disubstituted tin diacetylenes to produce PhI.sup.+ C.tbd.C-C.tbd.CI.sup.+ Ph.cndot.2 R.sub.f SO.sub.3.sup.- to produce a dialkynyldi(phenyliodonium) salt.
    Type: Grant
    Filed: July 19, 1991
    Date of Patent: February 15, 1994
    Assignee: University of Utah Research Foundation
    Inventors: Peter J. Stang, Charles M. Crittell, Bobby L. Williamson, Viktor Zhdankin