Copper(II) complex anchored on magnetic chitosan functionalized trichlorotriazine: An efficient heterogeneous catalyst for the synthesis of tetrazole derivatives

Abstract

In this work, a method has been developed for the synthesis of magnetic chitosan functionalized trichlorotriazine-5-amino-1H-tetrazole copper(II) complex (Fe3O4@CS-TCT-Tet-Cu(II)). The synthesized Fe3O4@CS-TCT-Tet-Cu(II) was characterized using XRD, EDS, elemental mapping, STEM, FT-IR, TG/DTA, FFT, ICP-MS, and TEM analyses. Fe3O4@CS-TCT-Tet-Cu(II) was then applied in the synthesis of N-sulfonyl-N-aryl tetrazoles and 5-arylamino-1H-tetrazoles via the reaction of sodium azide with N-sulfonyl-N-arylcyanamides and arylcyanamides, respectively in DMF solvent. The synthesized Fe3O4@CS-TCT-Tet-Cu(II) can be recycled and reused for five cycles with no considerable loss of catalytic performance.