Cu–Mn bimetallic catalyst for Huisgen [3+2]-cycloaddition

Abstract

Cu–Mn spinel oxide catalyst has been investigated for the ligand-free Huisgen [3+2] cycloaddition. The copper(I) species required in the cycloaddition reaction has been stabilized in the tetrahedral site of the spinel without the need of a stabilizing agent. The new catalyst is robust and can be reused several times under MW conditions with negligible loss in catalytic activity.