Issue 19, 2010
From the journal:

Chemical Communications

[3+2+1] cycloaddition involving alkynes, CO and bridging vinyliminium ligands in diiron complexes: a dinuclear version of the Dötz reaction?†

Luigi Busetto,a   Fabio Marchetti,b   Rita Mazzoni,a   Mauro Salmi,a   Stefano Zacchinia  and  Valerio Zanotti*a  

* Corresponding authors

a Dipartimento di Chimica Fisica e Inorganica, Università di Bologna, Viale Risorgimento 4, 40136 Bologna, Italy
E-mail: valerio.zanotti@unibo.it
Fax: +390512093690
Tel: +390512093695

b Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy
E-mail: fabmar@dcci.unipi.it
Tel: +390502219245

Abstract

The vinyliminium complex [Fe2{μ-η1:η3-C(SiMe3)[double bond, length as m-dash]CHC[double bond, length as m-dash]N(Me)2}(μ-CO)(CO)(Cp)2][SO3CF3] reacts with HC[triple bond, length as m-dash]CR (R = CPh2OH), affording a mixture of the 2,4,6-trisubstituted oxo-η5-cyclohexadienyl complex [Fe{η5-C6H2O(NMe2)(SiMe3)(R)}(Cp)], the 2,6-disubstituted phenol C6H3R′(NMe2)OH (R′ = CHPh2) and 1,2,4-trisubstituted ferrocene [1-NMe2-2-R-4-SiMe3-Fc]. The corresponding reaction with HC[triple bond, length as m-dash]CR (R = CMe2OH) yields analogous products: [Fe{η5-C6H2O(NMe2)(SiMe3)(R′)}(Cp)] (R′ = CMe[double bond, length as m-dash]CH2), the phenol C6H3R′(NMe2)OH together with [1-NMe2-2-R-4-SiMe3-Fc].

Graphical abstract: [3+2+1] cycloaddition involving alkynes, CO and bridging vinyliminium ligands in diiron complexes: a dinuclear version of the Dötz reaction?

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Article information

DOI
https://doi.org/10.1039/B925207J
Article type
Communication
Submitted
01 Dec 2009
Accepted
19 Mar 2010
First published
14 Apr 2010

Chem. Commun., 2010,46, 3327-3329

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[3+2+1] cycloaddition involving alkynes, CO and bridging vinyliminium ligands in diiron complexes: a dinuclear version of the Dötz reaction?

L. Busetto, F. Marchetti, R. Mazzoni, M. Salmi, S. Zacchini and V. Zanotti, Chem. Commun., 2010, 46, 3327 DOI: 10.1039/B925207J

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