Bis-chelating ligand and use thereof in carbonylation processes

Details Bis-chelating ligand and use thereof in carbonylation processes Bis-chelating ligand and use thereof in carbonylation processes

2007-11-13

2007-11-13

Nazario-Gonzalez, Porfirio (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

C556S018000, C556S404000, C558S077000, C558S078000, C568S012000, C568S014000, C568S451000, C502S158000, C502S162000

Reexamination Certificate

active

10527568

ABSTRACT:
A novel bis-chelating composition characterized by formula I: wherein M is a Group VB element; R1 and R2 are each independently selected from hydrogen and monovalent hydrocarbyl radicals; or R1 and R2 are bonded together to form a diradical; or one of R1 or R2 is hydrogen or a monovalent hydrocarbyl radical, while the other of R1 or R2 is a hydrocarbyl radical bonded to an atom in Ar; wherein Ar is selected from 1,2-arylenes; Q is selected from 1,2-arylenes, 2,2′-bisarylenes and alkyl diradicals; and W is selected from II, III, IV, or V: wherein M is as defined hereinbefore; each R is independently selected from hydrogen and monovalent hydrocarbyl radicals; X is selected from alkyl and aryl diradicals; Ar1and Ar2are each independently selected from 1,2-arylenes;Ar3and Ar4are each independently selected from monovalent aryl radicals; and n in formula IV is 0 or 1. The composition finds utility as a ligand in catalysts for carbonylation processes

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