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An efficient synthesis of dicycloalkenopyridines was achieved via one-pot three-component condensation of aromatic aldehyde, cyclohexanone, and hydroxylamine hydrochloride using 3-nitrophenylboronic acid as an efficient catalyst under ambient condition. The current methodology offers several advantages such as high yields (78–90%) and simple experimental work-up at ambient temperature conditions.
A new type of zirconium-substituted aminoethyl phosphonate material is prepared and characterized by elemental analysis, ICP, FTIR, XRD, 31P-MAS NMR, TG, DTG and DSC. XRD indicates that the material is amorphous. The 31P-MAS NMR of the material exhibits a single resonance, and thermogravimetry shows that the material has three steps mass loss at temperatures of up to 900 °C. The zirconium phosphonate...
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