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Issue 66, 2017
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A stable gold(i)–enyne species obtained by alkyne carboauration in a complex rearrangement

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Abstract

An unprecedented tetranuclear gold derivative with unusual gold-enyne moieties is prepared by a mild and neat rearrangement of a dinuclear gold complex with a bridging bis(diphenylphosphino)alkyne and terminal alkynyl ligands. The complex originates as a consequence of an intramolecular addition of the AuC[triple bond, length as m-dash]CTol fragment to the internal diphosphine triple bond Ph2PC[triple bond, length as m-dash]CPPh2. The crystal structure of the tetranuclear complex shows a dinuclear metallacycle with a very short Au⋯Au bond interaction and bridging phosphino–enyne ligands. This disposition clearly stabilises the elusive vinyl gold species omnipresent as intermediates in gold-catalysed reactions.

Graphical abstract: A stable gold(i)–enyne species obtained by alkyne carboauration in a complex rearrangement

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Article information


Submitted
12 May 2017
Accepted
07 Jun 2017
First published
07 Jun 2017

Chem. Commun., 2017,53, 9202-9205
Article type
Communication

A stable gold(I)–enyne species obtained by alkyne carboauration in a complex rearrangement

J. Cámara, M. C. Blanco, A. Laguna, P. Naumov and M. C. Gimeno, Chem. Commun., 2017, 53, 9202
DOI: 10.1039/C7CC03713A

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