Sajjadi, MohaddesehNasrollahzadeh, MahmoudGhafuri, HosseinBaran, TalatBaran, Nuray YılmazOrooji, YasinShokouhimehr, Mohammadreza2022-05-162022-05-162022https:/dx.doi.org/10.1016/j.ijbiomac.2022.04.075https://hdl.handle.net/20.500.12451/9383A novel heterogeneous catalyst has been developed using chitosan-zeolite supported Pd nanoparticles (PdNPs@CS-Zeo) and used in an efficient synthesis of 5-substituted-1H-tetrazoles from aryl halides with high yields for relatively short reaction times with an easy work-up procedure. In this method, highly effective and reusable PdNPs@CS-Zeo catalyst was used in the reaction of various aryl iodides/bromides with K4[Fe(CN)6] as a non-toxic cyanide source to catalyze the [2 + 3] cycloaddition of the corresponding aryl nitriles with NaN3 in the sequential one-pot preparation of 5-substituted-1H-tetrazoles. The synthesized PdNPs@CS-Zeo nanocatalyst was characterized using XRD, FTIR, TEM, HRTEM, XPS, Raman, TG-DTG, ICP-OES, BET, and EDS mapping. Additionally, the nanocatalyst could be effectively separated by filtration and reused for multiple times without significant decrease of catalytic activity.eninfo:eu-repo/semantics/embargoedAccessBiopolymer-supported Pd ComplexAryl Nitriles5-Substituted-1H-tetrazolesChitosanCyanationCycloadditionArticle209-1573158510.1016/j.ijbiomac.2022.04.07535447267Q1WOS:000801971100001Q1