Preparation and reactions of monocyclic bis(cyclopentadienyl)titanacyclopentenes and -pentadienes

Kimihiko Sato; Yasushi Nishihara; Shouquan Huo; Zhenfeng Xi; Tamotsu Takahashi

doi:10.1016/S0022-328X(01)01072-5

Preparation and reactions of monocyclic bis(cyclopentadienyl)titanacyclopentenes and -pentadienes

Kimihiko Sato, Yasushi Nishihara, Shouquan Huo, Zhenfeng Xi, Tamotsu Takahashi

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

30 Citations (Scopus)

Abstract

A combination of Cp₂TiCl₂-2EtMgBr was found to be very effective for the formation of monocyclic titanacyclopentenes in excellent yields. On the other hand, a combination of Cp₂TiCl₂-2n-BuLi was used for intermolecular coupling of two alkynes to form titanacyclopentadienes in good to excellent yields. A reaction temperature range from -10 to -30°C was critical for the success of the combinations. Reactions of these in situ-prepared titanacycles show interesting similarities to or differences from their zirconacycle analogs.

Original language	English
Pages (from-to)	18-26
Number of pages	9
Journal	Journal of Organometallic Chemistry
Volume	633
Issue number	1-2
DOIs	https://doi.org/10.1016/S0022-328X(01)01072-5
Publication status	Published - Aug 10 2001
Externally published	Yes

Keywords

Intermolecular coupling
Titanacyclopentadiene
Titanacyclopentene
Titanocene-ethylene complex

ASJC Scopus subject areas

Biochemistry
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Materials Chemistry

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10.1016/S0022-328X(01)01072-5

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title = "Preparation and reactions of monocyclic bis(cyclopentadienyl)titanacyclopentenes and -pentadienes",

abstract = "A combination of Cp2TiCl2-2EtMgBr was found to be very effective for the formation of monocyclic titanacyclopentenes in excellent yields. On the other hand, a combination of Cp2TiCl2-2n-BuLi was used for intermolecular coupling of two alkynes to form titanacyclopentadienes in good to excellent yields. A reaction temperature range from -10 to -30°C was critical for the success of the combinations. Reactions of these in situ-prepared titanacycles show interesting similarities to or differences from their zirconacycle analogs.",

keywords = "Intermolecular coupling, Titanacyclopentadiene, Titanacyclopentene, Titanocene-ethylene complex",

author = "Kimihiko Sato and Yasushi Nishihara and Shouquan Huo and Zhenfeng Xi and Tamotsu Takahashi",

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T1 - Preparation and reactions of monocyclic bis(cyclopentadienyl)titanacyclopentenes and -pentadienes

AU - Sato, Kimihiko

AU - Nishihara, Yasushi

AU - Huo, Shouquan

AU - Xi, Zhenfeng

AU - Takahashi, Tamotsu

PY - 2001/8/10

Y1 - 2001/8/10

N2 - A combination of Cp2TiCl2-2EtMgBr was found to be very effective for the formation of monocyclic titanacyclopentenes in excellent yields. On the other hand, a combination of Cp2TiCl2-2n-BuLi was used for intermolecular coupling of two alkynes to form titanacyclopentadienes in good to excellent yields. A reaction temperature range from -10 to -30°C was critical for the success of the combinations. Reactions of these in situ-prepared titanacycles show interesting similarities to or differences from their zirconacycle analogs.

AB - A combination of Cp2TiCl2-2EtMgBr was found to be very effective for the formation of monocyclic titanacyclopentenes in excellent yields. On the other hand, a combination of Cp2TiCl2-2n-BuLi was used for intermolecular coupling of two alkynes to form titanacyclopentadienes in good to excellent yields. A reaction temperature range from -10 to -30°C was critical for the success of the combinations. Reactions of these in situ-prepared titanacycles show interesting similarities to or differences from their zirconacycle analogs.

KW - Intermolecular coupling

KW - Titanacyclopentadiene

KW - Titanacyclopentene

KW - Titanocene-ethylene complex

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