فهرست نشریات علمی دسترسی آزاد ایران

An efficient synthesis of 4,4'-(phenylmethylene)bis(1H-pyrazol-5-ol)-3-carboxylates is achieved by one pot pseudo five-component reaction of phenylhydrazine, acetylenedicarboxylates and aromatic aldehydes in the presence ofnano-NiZr4(PO4)6 at 60°C in water. Nano-NiZr4(PO4)6  has been characterized by powder X-ray diffraction (XRD) and scanning electronic microscopy (SEM). Use of simple and readily available starting materials, excellent yields in short times, reusability of the catalyst, little catalyst loading and simple operational procedures are some of the important features of this protocol.