Diethyl carbonate as a solvent for ruthenium catalysed C–H bond functionalisation

Percia Arockiam; Valentin Poirier; Cédric Fischmeister; Christian Bruneau; Pierre H. Dixneuf

doi:10.1039/B913115A

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Green Chemistry

Issue 11, 2009

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Diethyl carbonate as a solvent for ruthenium catalysed C–H bond functionalisation

Percia Arockiam , Valentin Poirier , Cédric Fischmeister , Christian Bruneau and Pierre H. Dixneuf

Green Chem., 2009, 11, 1871-1875

DOI: 10.1039/B913115A
Received 02 Jul 2009, Accepted 11 Aug 2009
First published on the web 08 Sep 2009

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Abstract
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The ruthenium catalysed direct functionalisation of arene C–H bonds by aryl halides is reported. Reactions were performed in diethyl carbonate (DEC) instead of N-methylpyrrolidone (NMP), the solvent of choice used in most ruthenium catalysed C–H bond transformations. The use of diethyl carbonate facilitates the workup procedure thus reducing the amount of waste water. The slight loss of activity due to the use of diethyl carbonate is counterbalanced by the improvement of the catalyst efficiency achieved by a judicious choice of additives. Several arenes containing an N-heterocycle as a directing group have been diarylated.

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Percia Arockiam
Valentin Poirier
Cédric Fischmeister
Christian Bruneau
Pierre H. Dixneuf

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Green Chemistry

Diethyl carbonate as a solvent for ruthenium catalysed C–H bond functionalisation

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