Nano-Rb2HPW12O40 as an Efficient and Novel Catalyst for One-Pot Synthesis of β-Amino Ketones

Abstract

The aim of the research described was to study Rb 2 HPW 12 O 40 as a green and heterogeneous catalyst for the Mannich reaction. One-pot multi-component condensation of an aldehyde, an amine and a ketone at ambient temperature affords the corresponding β-amino ketones using novel nano-sized Rb 2 HPW 12 O 40 . Simple purification, short reaction time and high yield are some of the advantages of this reaction. Also, the catalyst can be readily isolated. The nano catalyst Rb 2 HPW 12 O 40 has been characterized by Fourier transform infrared spectroscopy, X-ray powder diffraction and scanning electron microscopy.

Synthesis and Properties of Rubidium Salts of Phosphotungstic Acid

“…Among the water-insoluble PTA salts, rubidium salts are promising for various applications. Thus, in [33], it was shown that rubidium salts have a larger SSA and pore volume compared with cesium salts; therefore, they can be used as catalysts in organic synthesis [34], including in the reactions of hydrogenation and dehydrogenation of organic compounds [35].The catalytic effect of rubidium salts of PTA promotes the activation of the bond between hydrogen and organic molecules, which allows reactions to be carried out with high efficiency [36]. Hybrid Nafion membranes doped with the rubidium salt of PTA show higher values of conductivity and strength compared with membranes doped with cesium salt [15].…”