A New Neodymium Complex on Boehmite Nanoparticles with 1,3-Bis(pyridine-3-ylmethyl)thiourea as a Practical and Reusable Nanocatalyst for the Chemoselective Synthesis of Tetrazoles

In first part, boehmite nanoparticles were synthesized using aqueous solutions of NaOH and Al(NO3)(3) center dot 9H(2)O. Then, it surface was modified by 3-choloropropyltrimtoxysilane, and further 1,3-bis(pyridin-3-ylmethyl)thiourea was anchored on the modified boehmite nanoparticles. In the final step, a neodymium complex was stabilized on its surface (Nd-bis(PYT)@boehmite NPs). The obtained nanoparticles were characterized by TGA, BET, ICP, EDS, WDX, SEM, and XRD techniques. In the second part, Nd-bis(PYT)@boehmite NPs were employed as an efficient, recoverable, and organic-inorganic hybrid nanocatalyst in the homo-selective synthesis of tetrazole compounds. The chemo-selectivity of Nd-bis(PYT)@boehmite NPs was studied in the [3+ 2] cycloaddition of phthalonitrile and sodium azide (NaN3). This catalyst is stable and has heterogeneous nature therefore it can be recovered and used again for several consecutively run without any re-activation

Automated summary

In the first part, boehmite nanoparticles were synthesized and modified by 3-choloropropyltrimtoxysilane and 1,3-bis(pyridin-3-ylmethyl)thiourea. A neodymium complex was then stabilized on its surface. In the second part, Nd-bis(PYT)@boehmite NPs were used as an efficient and recoverable nanocatalyst in the synthesis of tetrazole compounds.