Catalyst ligands, catalytic metal complexes and processes using same

  • US 6,974,878 B2
  • Filed: 09/18/2001
  • Issued: 12/13/2005
  • Est. Priority Date: 03/21/2001
  • Status: Expired due to Fees
First Claim
Patent Images

1. A complex characterized by one of the following general formulas:

  • embedded imagewherein each R1, R2, R3, R4 R5 and R6 is independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, cycloalkyl, substituted cycloalkyl, heteroalkyl, heterocycloalkyl, substituted heterocycloalkyl, aryl, substituted aryl, heteroaryl, substituted heteroaryl, alkoxy, aryloxy, silyl, boryl, phosphino, amino, thio, seleno, and combinations thereof;

    optionally, R1 and R2 are joined together in a ring structure and/or R4 and R5 are joined together in a ring structure;

    G is either nitrogen or oxygen and a is 0 or 1 depending on G;

    b is 0, 1, 2, 3 or 4;

    M is a transition metal selected from the group consisting of Groups 3, 4, 5, 6, 7, 8, 9 and 10 of the Periodic Table of Elements;

    L is independently each occurrence, a ligand;

    n is a number 0, 1, 2, 3, 4, and 5; and

    m is 1, 2, 3 or 4.

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