1 Department of Chemistry, Imperial College London, South Kensington Campus, London SW7 2AZ, UK. j.wilton-ely@imperial.ac.uk s.diez-gonzalez@imperial.ac.uk.
Immobilised [Cu(NHC)] catalysts are reported for the preparation of 1,2,3-triazoles. In addition to showing outstanding catalytic activity, the catalyst systems are easy to prepare and can be recycled many times.