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Cu–Immobilized Mesoporous Silica Nanoparticles [Cu 2+ @MSNs‐(CO 2 − ) 2 ] as an Efficient Nanocatalyst for One‐Pot Synthesis of Pyrazolopyranopyrimidines in Water
Author(s) -
Nasresfahani Zahra,
Kassaee Mohammad Zaman
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201701452
Subject(s) - catalysis , scanning electron microscope , nuclear chemistry , hydrazine (antidepressant) , nanoparticle , transmission electron microscopy , mesoporous silica , ethyl acetoacetate , hydrate , inorganic chemistry , materials science , mesoporous material , chemistry , nanotechnology , organic chemistry , chromatography , composite material
Abstract Cu 2+ @MSNs‐(CO 2 − ) 2 has been prepared and characterized by using small angle powder X‐ray diffraction (XRD), Nitrogen adsorption–desorption analysis, Scanning electron microscopy (SEM), Transmission electron microscopy (TEM), Energy dispersive X‐ray (EDX), Thermal analyses (TGA‐DTA) and FT‐IR studies. A facile one‐pot, four‐component condensation reaction of ethyl acetoacetate, hydrazine hydrate, aromatic aldehydes, and barbituric acid for synthesis of pyrazolopyranopyrimidines is efficiently catalyzed over Cu 2+ @MSNs‐(CO 2 − ) 2 in water. This catalyst is easily recovered from the reaction mixture and reused several times without any loss in catalytic activity.