Copper nanoparticulates in Guar-gum: a recyclable catalytic system for the Huisgen [3+2]-cycloaddition of azides and alkynes without additives under ambient conditions

Cu-nanoparticulates in Guar-gum at room temperature were investigated for the first time as a recyclable catalytic system in organic synthesis. The catalytic potential of these materials were evaluated in the Huisgen [3 + 2]-cycloaddition of azides and alkynes without additives under ambient conditions which offers several advantages, viz. high yields, clean reactions, short reaction times, recyclability of the catalyst and a simple workup procedure.