Issue 1, 2006

Olefination and group transfer reactions of an electron deficient tantalum methylidene complex

Abstract

The reactivity of an electronically unsaturated tantalum methylidene complex [TolC(NSiMe3)2]2Ta(CH2)CH3 (1) supported by [TolC(NSiMe3)2] amidinate ligands is described. Electrophilic addition and olefination reactions of the Ta[double bond, length as m-dash]CH2 functionality are reported. Alkylidene 1 participates in group-transfer reactions not observed in sterically similar, but electronically saturated, analogues. Reactions with substrates containing unsaturated C–X (X = C, N, O) bonds yield [Ta][double bond, length as m-dash]X compounds and vinylated organic products; carbon–sulfur cleavage reactions to produce tantalum thioformaldehyde and tantalum sulfido complexes.

Graphical abstract: Olefination and group transfer reactions of an electron deficient tantalum methylidene complex

Supplementary files

Article information

Article type
Paper
Submitted
09 Sep 2005
Accepted
19 Oct 2005
First published
14 Nov 2005

Dalton Trans., 2006, 203-212

Olefination and group transfer reactions of an electron deficient tantalum methylidene complex

S. M. Mullins, R. G. Bergman and J. Arnold, Dalton Trans., 2006, 203 DOI: 10.1039/B512741F

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