Issue 11, 2005
From the journal:

Chemical Communications

A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes†

Gerhard Hilt,*a   Thomas Vogler,a   Wilfried Hessa  and  Fabrizio Galbiatia  

* Corresponding authors

a Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße, Marburg, Germany
E-mail: Hilt@chemie.uni-marburg.de
Fax: (+49) 6421 2825677
Tel: (+49) 6421 2825601

Abstract

The intermolecular cyclotrimerisation of terminal and internal alkynes can be catalysed by simple cobalt complexes such as a CoBr2(diimine) under mild reaction conditions when treated with zinc and zinc iodide with high regioselectivity in excellent yields.

Graphical abstract: A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes

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Article information

DOI
https://doi.org/10.1039/B417832G
Article type
Communication
Submitted
25 Nov 2004
Accepted
05 Jan 2005
First published
26 Jan 2005

Chem. Commun., 2005, 1474-1475

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A simple cobalt catalyst system for the efficient and regioselective cyclotrimerisation of alkynes

G. Hilt, T. Vogler, W. Hess and F. Galbiati, Chem. Commun., 2005, 1474 DOI: 10.1039/B417832G

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