A pyridine dialkoxide titanium dichloride complex. Synthesis and molecular structure of 2,6-bis(2,2-diphenyl-2-trimethylsilyloxyethyl)pyridine

Helmut Mack; Moris S. Eisen

doi:10.1039/a708041g

A pyridine dialkoxide titanium dichloride complex. Synthesis and molecular structure of 2,6-bis(2,2-diphenyl-2-trimethylsilyloxyethyl)pyridine

Helmut Mack, Moris S. Eisen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

71 Scopus citations

Abstract

Reaction of 2,6-dimethylpyridine with 2 equivalents of LiBuⁿ followed by addition of 2 equivalents of benzophenone and the consecutive reaction with 2 equivalents of SiMe₃Cl afforded the doubly functionalised 2,6-bis(2,2-diphenyl-2-trimethylsilyloxyethyl)pyridine L. The structure of L has been determined by an X-ray diffraction study. Reaction of either a doubly lithiated intermediate or the corresponding silylated ligand L with TiCl₄ afforded a pyridine dialkoxide titanium dichloride complex. A cationic α-olefin polymerization catalyst was generated from this complex with an excess of methylaluminoxane (MeAlO)_n. A comparison of the catalytic activity with those of similar bis(alkoxide) complexes is presented.

Original language	English
Pages (from-to)	917-921
Number of pages	5
Journal	Journal of the Chemical Society. Dalton Transactions
Issue number	6
DOIs	https://doi.org/10.1039/a708041g
State	Published - 21 Mar 1998
Externally published	Yes

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title = "A pyridine dialkoxide titanium dichloride complex. Synthesis and molecular structure of 2,6-bis(2,2-diphenyl-2-trimethylsilyloxyethyl)pyridine",

abstract = "Reaction of 2,6-dimethylpyridine with 2 equivalents of LiBun followed by addition of 2 equivalents of benzophenone and the consecutive reaction with 2 equivalents of SiMe3Cl afforded the doubly functionalised 2,6-bis(2,2-diphenyl-2-trimethylsilyloxyethyl)pyridine L. The structure of L has been determined by an X-ray diffraction study. Reaction of either a doubly lithiated intermediate or the corresponding silylated ligand L with TiCl4 afforded a pyridine dialkoxide titanium dichloride complex. A cationic α-olefin polymerization catalyst was generated from this complex with an excess of methylaluminoxane (MeAlO)n. A comparison of the catalytic activity with those of similar bis(alkoxide) complexes is presented.",

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T1 - A pyridine dialkoxide titanium dichloride complex. Synthesis and molecular structure of 2,6-bis(2,2-diphenyl-2-trimethylsilyloxyethyl)pyridine

AU - Mack, Helmut

AU - Eisen, Moris S.

PY - 1998/3/21

Y1 - 1998/3/21

N2 - Reaction of 2,6-dimethylpyridine with 2 equivalents of LiBun followed by addition of 2 equivalents of benzophenone and the consecutive reaction with 2 equivalents of SiMe3Cl afforded the doubly functionalised 2,6-bis(2,2-diphenyl-2-trimethylsilyloxyethyl)pyridine L. The structure of L has been determined by an X-ray diffraction study. Reaction of either a doubly lithiated intermediate or the corresponding silylated ligand L with TiCl4 afforded a pyridine dialkoxide titanium dichloride complex. A cationic α-olefin polymerization catalyst was generated from this complex with an excess of methylaluminoxane (MeAlO)n. A comparison of the catalytic activity with those of similar bis(alkoxide) complexes is presented.

AB - Reaction of 2,6-dimethylpyridine with 2 equivalents of LiBun followed by addition of 2 equivalents of benzophenone and the consecutive reaction with 2 equivalents of SiMe3Cl afforded the doubly functionalised 2,6-bis(2,2-diphenyl-2-trimethylsilyloxyethyl)pyridine L. The structure of L has been determined by an X-ray diffraction study. Reaction of either a doubly lithiated intermediate or the corresponding silylated ligand L with TiCl4 afforded a pyridine dialkoxide titanium dichloride complex. A cationic α-olefin polymerization catalyst was generated from this complex with an excess of methylaluminoxane (MeAlO)n. A comparison of the catalytic activity with those of similar bis(alkoxide) complexes is presented.

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DO - 10.1039/a708041g

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A pyridine dialkoxide titanium dichloride complex. Synthesis and molecular structure of 2,6-bis(2,2-diphenyl-2-trimethylsilyloxyethyl)pyridine

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