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US 5,631,203 AGranted
Metallocene compounds and preparation thereof containing terminal alkynes
AssigneePhillips Petroleum Company
InventorsM. Bruce Welch, Helmut G. Alt, Bernd Peifer
Life of this patent
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Abstract
Metallocene compounds and processes for preparing such metallocene compounds are provided. Such processes for preparing such metallocene compounds comprise reacting an alkynyl ligand, an alkali metal compound, and a transition metal-containing compound.
Claims15
A process for preparing a metallocene compound comprising reacting an alkynyl ligand, an alkali metal compound, and a transition metal-containing compound:
- wherein the alkynyl ligand contains a terminal alkynyl group and at least one cyclopentadienyl-type group,
- wherein the cyclopentadienyl-type group is cyclopentadienyl, substituted cyclopentadienyl, indenyl, substituted indenyl, tetrahydroindenyl, fluorenyl, substituted fluorenyl, or octahydrofluorenyl group,
- wherein the substituents are hydrocarbyl groups containing from 1 to 20 carbon atoms, alkoxy groups containing from 1 to 12 carbon atoms, silyl groups, alkyl halide groups where the alkyl contains from 1 to 12 carbon atoms, or halide;
- wherein the alkali metal compound is a hydrocarbyl compound of sodium, potassium, or lithium, wherein the hydrocarbyl group contains from 1 to 12 carbon atoms;
- and
- wherein the transition metal-containing compound is represented by the formula MX.sub.x, wherein M is a Group IVB or VB transition metal, each X is individually selected from the group consisting of hydrocarbyl groups containing from 1 to 20 carbon atoms, alkoxy groups containing from 1 to 12 carbon atoms, aryloxy groups containing 6 to 12 carbon atoms, halide and hydride, and x is the valence of the transition metal.
3 more elements
A metallocene compound prepared by reacting an alkynyl ligand, an alkali metal compound, and a transition metal-containing compound:
- wherein the alkynyl ligand contains a terminal alkynyl group and at least one cyclopentadienyl-type group,
- wherein the cyclopentadienyl-type group is a cyclopentadienyl, substituted cyclopentadienyl, indenyl, substituted indenyl, tetrahydroindenyl, fluorenyl, substituted fluorenyl, or octahydrofluorenyl group,
- wherein the substituents are hydrocarbyl groups containing from 1 to 20 carbon atoms, alkoxy groups containing from 1 to 12 carbon atoms, silyl groups, alkyl halide groups where the alkyl contains from 1 to 12 carbon atoms, or halide;
- wherein the alkali metal compound is a hydrocarbyl compound of sodium, potassium, or lithium, wherein the hydrocarbyl group contains from 1 to 12 carbon atoms;
- and
- wherein the transition metal-containing compound is represented by the formula MX.sub.x, wherein M is a Group IVB or VB transition metal, each X is individually selected from the group consisting of hydrocarbyl groups containing from 1 to 20 carbon atoms, alkoxy groups containing from 1 to 12 carbon atoms, aryloxy groups containing 6 to 12 carbon atoms, halide and hydride, and x is the valence of the transition metal.
3 more elements
Dependencies are inferred from the claim text.