Diphenylglyoxime gapped nickel immobilized on multi-walled carbon nanotube: a new nanocatalyst for one-pot synthesis of spiro furo[2,3-d]pyrimidines

In this research, we have synthesized and characterized new magnetic, stable and reusable nanocatalyst Fe₃O₄/MWCNT@SⁿPr-DPhG-Ni. The new ligand of diphenylglyoxime was use for the gapping nickel ion on the nanocatalyst. This nanocatalyst was analyzed by FT IR, EDX, XRD, VSM, SEM, TEM and TGA-DTA spectroscopic techniques. This nanocatalyst was used for the one-pot synthesis of spiro furo[2,3-d]pyrimidines in the reaction with various aldehydes, (1,3-dimethyl)barbituric acid, cyanogen bromide and triethylamine in excellent yield at room temperature.