Patents Assigned to Chao-Jun Li
  • Publication number: 20090306390
    Abstract: A novel class of chiral ligands represented by a structure of Formula (I): wherein R1, R2, R3, R4 and R5 are independently selected from the group consisting of hydrogen, halogen, C1-10 alkyl, C2-10 alkenyl, C2-10 alkynyl, C1-10 alkoxy, C(O)R6, C(O)NHR6, Si(R6)3, benzyl and aryl; X is selected from the group consisting of OH, OR7, O-Prot and P(R7)2 where Prot represents a protecting group; and R6 and R7 are selected from the group consisting of hydrogen, C1-10 alkyl, C2-10 alkenyl, C2-10 alkynyl, C1-10 alkoxy, phenyl, and aryl is disclosed herein.
    Type: Application
    Filed: March 2, 2007
    Publication date: December 10, 2009
    Applicant: Chao-Jun Li
    Inventors: Chao-Jun Li, Patricia MacLeod, Zhiping Li, Jianqing Feng
  • Publication number: 20090247757
    Abstract: Novel chemical agents are described herein. More a ligand of general Formula I: wherein R1, R2, R3 and R4, are independently selected from the group consisting of hydrogen, halogen, hydroxy, C1-C10 alkyl, C2-C10 alkenyl, C2-C10 alkynyl, C1-C10 alkoxy, C1-C10 alkylthio, C(O)R5, C(O)OR5, C(O)NHR5, Si(R5)3, benzyl and aryl; X is selected from the group consisting of Cl, Br, I, OR6, O-Prot, OPR6, P(R6)2, NHR6, N(R6)2, NHCSNHR6, NHCONHR6 and SR6; and R5 and R6 are independently selected from the group consisting of hydrogen, C1-10 alkyl, C2-10 alkenyl, C2-10 alkynyl, C1-10 alkoxy, phenyl, and aryl. These ligands are useful in asymmetric reactions as well as in asymmetric synthesis of molecules of biological interest.
    Type: Application
    Filed: November 7, 2008
    Publication date: October 1, 2009
    Applicant: Chao-Jun Li
    Inventors: Chao-Jun Li, Jianqing Feng