Patents by Inventor Subrata K. Ghosh

Subrata K. Ghosh 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).

  • Transition metal complexes for enantioselective catalysis of carbon-carbon, carbon-heteroatom, and carbon-hydrogen bond forming reactions
    Patent number: 10189871
    Abstract: In some embodiments, the present disclosure pertains to a compound, comprising a transition metal complex having the formula ?-[M (x,y)-L1 (w,v)-L2 (t,u)-L3]p+An?mZ?p?m. In an embodiment of the present disclosure ? may be ?. In another embodiment ? may be ?. In some embodiments of the present disclosure, M is a transition metal. In a related embodiment, p is an integer corresponding to the oxidation state of M. In some embodiments of the present disclosure, each of x, y, w, v, t, and u independently comprise R. In other embodiments, each of x, y, w, v, t, and u independently comprise S. In an embodiment of the present disclosure, each of L1, L2, and L3 independently is a ligand comprising a substituted diamine. In some embodiments, An? comprises a lipophilic anion, where m is from 1 to 3, and where Z? comprises an optional second anion.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: January 29, 2019
    Assignee: THE TEXAS A&M UNIVERSITY SYSTEM
    Inventors: Kyle G. Lewis, John A. Gladysz, Subrata K. Ghosh
  • TRANSITION METAL COMPLEXES FOR ENANTIOSELECTIVE CATALYSIS OF CARBON-CARBON, CARBON-HETEROATOM, AND CARBON-HYDROGEN BOND FORMING REACTIONS
    Publication number: 20170044198
    Abstract: In some embodiments, the present disclosure pertains to a compound, comprising a transition metal complex having the formula ?-[M (x,y)-L1 (w,v)-L2 (t,u)-L3]p+An?mZ?p-m. In an embodiment of the present disclosure ? may be ?. In another embodiment ? may be ?. In some embodiments of the present disclosure, M is a transition metal. In a related embodiment, p is an integer corresponding to the oxidation state of M. In some embodiments of the present disclosure, each of x, y, w, v, t, and u independently comprise R. In other embodiments, each of x, y, w, v, t, and u independently comprise S. In an embodiment of the present disclosure, each of L1, L2, and L3 independently is a ligand comprising a substituted diamine. In some embodiments, An? comprises a lipophilic anion, where m is from 1 to 3, and where Z? comprises an optional second anion.
    Type: Application
    Filed: August 22, 2016
    Publication date: February 16, 2017
    Applicant: The Texas A&M University System
    Inventors: Kyle G. LEWIS, John A. GLADYSZ, Subrata K. GHOSH
  • Transition metal complexes for enantioselective catalysis of carbon-carbon, carbon-heteroatom, and carbon-hydrogen bond forming reactions
    Patent number: 9446393
    Abstract: In some embodiments, the present disclosure pertains to a compound, comprising a transition metal complex having the formula ?-[M(x,y)-L1(w,v)-L2(t,u)-L3]p+An?mZ?p_m. In an embodiment of the present disclosure ? may be A. In another embodiment ? may be ?. In some embodiments of the present disclosure, M is a transition metal. In a related embodiment, p is an integer corresponding to the oxidation state of M. In some embodiments of the present disclosure, each of x, y, w, v, t, and u independently comprise R. In other embodiments, each of x, y, w, v, t, and u independently comprise S. In an embodiment of the present disclosure, each of L1, L2, and L3 independently is a ligand comprising a substituted diamine. In some embodiments, An? comprises a lipophilic anion, where m is from 1 to 3, and where Z? comprises an optional second anion.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: September 20, 2016
    Assignee: THE TEXAS A&M UNIVERSITY SYSTEM
    Inventors: Kyle G. Lewis, John A. Gladysz, Subrata K. Ghosh
  • TRANSITION METAL COMPLEXES FOR ENANTIOSELECTIVE CATALYSIS OF CARBON-CARBON, CARBON-HETEROATOM, AND CARBON-HYDROGEN BOND FORMING REACTIONS
    Publication number: 20150165429
    Abstract: In some embodiments, the present disclosure pertains to a compound, comprising a transition metal complex having the formula ?-[M(x,y)-L1(w,v)-L2(t,u)-L3]p+An?mZ?p—m. In an embodiment of the present disclosure ? may be A. In another embodiment ? may be ?. In some embodiments of the present disclosure, M is a transition metal. In a related embodiment, p is an integer corresponding to the oxidation state of M. In some embodiments of the present disclosure, each of x, y, w, v, t, and u independently comprise R. In other embodiments, each of x, y, w, v, t, and u independently comprise S. In an embodiment of the present disclosure, each of L1, L2, and L3 independently is a ligand comprising a substituted diamine. In some embodiments, An? comprises a lipophilic anion, where m is from 1 to 3, and where Z? comprises an optional second anion.
    Type: Application
    Filed: July 29, 2013
    Publication date: June 18, 2015
    Applicant: The Texas A&M University System
    Inventors: Kyle G. Lewis, John A. Gladysz, Subrata K. Ghosh