Organic & Biomolecular Chemistry 2009-04-21

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

Rafael Luque, Duncan J Macquarrie

Index: Org. Biomol. Chem. 7(8) , 1627-32, (2009)

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Abstract

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.