ZrOCl2·8H2O: An efficient and recyclable catalyst for the three-component synthesis of amidoalkyl naphthols under solvent-free conditions

An efficient synthesis of amidoalkyl naphthols from the reaction of β-naphthol and various aromatic aldehydes and amides using zrocl2·8h2o,an environmentally friendly catalyst under a thermal solvent-free green procedure is described. this simple protocol offers advantages such as shorter reaction times,simple work-up and excellent yield. the catalyst zrocl2·8h2o can be reused. the reusability of the catalyst has been studied for the synthesis of various amidoalkyl naphthols. © 2012 production and hosting by elsevier b.v.