Preparation of phosphorus-containing compounds useful in the preparation of biphosphine ligands

This invention relates to processes for making phosphorus-containing compounds; to novel phosphorus-containing compounds themselves; to a process for making lithiated compounds useful in the aforesaid processes; to the use of phosphorus-containing compounds produced by the aforesaid processes, in th...

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Bibliographic Details
Main Authors Van Ginkel, Roelof, Van Der Made, Alexander, De With, Jan, Eilenberg, Wolf
Format Patent
LanguageEnglish
Published 13.04.2004
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Summary:This invention relates to processes for making phosphorus-containing compounds; to novel phosphorus-containing compounds themselves; to a process for making lithiated compounds useful in the aforesaid processes; to the use of phosphorus-containing compounds produced by the aforesaid processes, in the preparation of polymerization catalyst compositions; to the use of said catalyst compositions in the preparation of polymers; and to polymers thereby produced. This invention relates to processes for making phosphorus compounds RP-X-PR, RP-M, RP-L and RP, and the novel cation RP(L)-X-P(L)R, where R represents an optionally substituted hydrocarbyl group, X represents a bridging group, L represents a leaving group and M represents an alkali metal atom. The invention relates further to a process for making a compound RP-L from a compound R-H via a new process for making the compound R-Li followed by its reaction with a compound HalP-L. The compound RP-X-PRis a ligand suitable for making catalysts for copolymerizing carbon monoxide and a olefinically unsaturated compound.