Fe/ppm Cu nanoparticles as a recyclable catalyst for click reactions in water at room temperature†
New iron-based nanoparticles doped with ppm levels of CuOAc are capable of catalyzing cycloadditions between alkynes and azides to afford triazole-containing products. These reactions take place in water at ambient temperatures, enabled by the presence of nanomicelles that function as a delivery mechanism. The NPs can be easily recycled within the same reaction vessel. Low levels of residual copper are found in the product.