polystyrene supported n-heterocyclic copper(ii) complex: a magnetically recyclable catalyst for the synthesis of n-aryl-n-(1h-tetrazol-5-yl)benzenessulfounamides

Tetrazoles constitute a very important class of organic compounds playing a significant role in the medicinal chemistry, material science, propellants, as ligand in the coordination chemistry [1] and also synthesis of n-containing compounds and bioactive molecules as effective antitumor agents, peptidase inhibitor and antihypertensive drugs [2,3].a novel magnetic copper(ii) complex bearing aminotetrazole ligand has been successfully fabricated via directly anchoring and immobilizing the structurally defined 5-aminotetrazole with a long tail ((3-chloropropyl)trimethoxysilane) onto the polystyrene (ps@tet-cu(ii)@fe3o4) and used as a magnetically recoverable catalyst for the efficient synthesis of n-aryl-n-(1h-tetrazol-5-yl) benzenesulfonamides for the first time from the [2+3] cycloaddition reaction between various n-cyano-n-arylbenzenesulfonamides with sodium azide in high yields. the structure of ps@tet-cu(ii)@fe3o4 was perfectly characterized via xrd, fesem, eds, tem, tg/dtg, vsm and ft-ir analyses.