Monocyclopentadienyltitanium aryloxide complexes: Preparation, characterization, and application in cyclization reactions

被引：60

作者：

Sturla, SJ ^{[1
]}

Buchwald, SL ^{[1
]}

机构：

[1] MIT, Dept Chem, Cambridge, MA 02139 USA

来源：

ORGANOMETALLICS | 2002年 / 21卷 / 04期

关键词：

D O I：

10.1021/om010755u

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A variety of monocyclopentadienyltitanium aryloxide complexes were prepared, characterized by X-ray crystallography, and used to catalyze or mediate cyclization reactions. Structural characterization allowed for the comparison of steric parameters of various 2,6-disubstituted aryloxide ligands. Transformations of dienes and enynes-including the catalysis of a 1,6-diene cycloisomerization and the intramolecular Pauson-Ehand reaction-were investigated. A titanium metallacycle was prepared from a sterically hindered enyne containing a trisubstituted olefin. The Pauson-Ehand reaction of trimethylsilyl-substituted enynes was promoted to generate alpha-silylcyclopentenones.

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页码：739 / 748

页数：10

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