Dendron-functionalized Fe3O4 magnetic nanoparticles with palladium catalyzed CN insertion of arylhalides for the synthesis of tetrazoles and benzamide

Publication date: Available online 5 November 2018Source: Journal of Organometallic ChemistryAuthor(s): Mohammad Ali Karimi Zarchi, Seyed Shahab Addin Darbandizadeh Mohammad AbadiAbstractA novel method for the one-pot synthesis of 5-substituted 1-H tetrazole and Benzamide from arylhalide containing in situ CN insertion from inorganic salt source was accomplished in presence of a new magnetically catalyst, palladium on surface-modified Schiff-Base complex. K2[Ni(CN)4] plays a role of nontoxic inorganic cyanide source in arylhalide Nucleophilic substitution. The synthesized Pd-Schiff-Base@Fe3O4MNPs was characterized by various techniques such as FT-IR, TGA, SEM, VSM, XRD, TEM, ICP-AES, EDX, BET and XPS. The nano structure catalyst was easily recovered by external magnetic field and reused several times without noticeable loss of its catalytic activity. Leaching study of Pd-Schiff-Base@Fe3O4 MNPs shows palladium strong bonded to different active parts of catalyst surface. Heterogeneity of this catalyst has been examined using hot filtration and ICP-AES techniques.Graphical abstract
Source: Journal of Organometallic Chemistry - Category: Chemistry Source Type: research