Efficient solvent- and metal-free Sonogashira protocol catalysed by 1,4-diazabicyclo(2.2.2) octane (DABCO)

Rafael Luque; Duncan J. Macquarrie

doi:10.1039/B821134P

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Organic & Biomolecular Chemistry

Issue 8, 2009

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Efficient solvent- and metal-free Sonogashira protocol catalysed by 1,4-diazabicyclo(2.2.2) octane (DABCO)

Rafael Luque and Duncan J. Macquarrie

Org. Biomol. Chem., 2009, 7, 1627-1632

DOI: 10.1039/B821134P
Received 25 Nov 2008, Accepted 12 Jan 2009
First published on the web 06 Mar 2009

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An efficient metal-free Sonogashira coupling protocol catalysed by DABCO is reported, where very good conversions and selectivities to the cross-coupling product were obtained under mild reaction conditions. The reported solvent-, phosphane- and metal-free protocol, that uses a cheap base as catalyst, considerably improves the green credentials of the reaction.

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Organic & Biomolecular Chemistry

Efficient solvent- and metal-free Sonogashira protocol catalysed by 1,4-diazabicyclo(2.2.2) octane (DABCO)

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