Patent ID: 7294729
Filing Date: 2007-11-13
Classification: B01J,C07C,C07F

Abstract:
1. A bis-chelating ligand composition having the generic formula: wherein M is a Group VB element selected from phosphorus (P), arsenic (As), or antimony (Sb); R 1 and R 2 are each independently selected from hydrogen and monovalent hydrocarbyl radicals; or alternatively, R 1 and R 2 are bonded together to form a hydrocarbyl or substituted hydrocarbyl diradical that taken with the methylene carbon of formula I forms a cyclic or heterocyclic ring; or alternatively, one of R 1 or R 2 is hydrogen or a monovalent hydrocarbyl radical, while the other of R 1 or R 2 is a hydrocarbyl or substituted hydrocarbyl radical bonded to an atom in the aryl group Ar to form a cyclic or heterocyclic ring; Ar is selected from 1,2-arylenes; Q is selected from the group consisting of 1,2-arylenes, 2,2′-bisarylenes and alkyl diradicals; and W is selected from the group consisting of Group VB element-containing formulas II, III, IV, and V: wherein M is as defined hereinbefore; each R is independently selected from monovalent hydrocarbyl radicals; X is selected from alkyl and aryl diradicals; Ar 1 and Ar 2 are each independently selected from 1,2-arylenes; Ar 3 and Ar 4 are each independently selected from monovalent aryl radicals; and n in formula IV is 0 or 1.