| Summary: | Several 5-thio-substituted tetrazole derivatives were efficiently synthesized by a three-step process. The substituted tetrazol-5-thiol, namely, 1-benzyl-1H-tetrazole-5-thiol (2) was prepared by refluxing commercially available benzyl isothiocyanate (1) with sodium azide in water. The second step was the synthesis of 1-benzyl-5-[(3-bromopropyl)thio]-1H-tetrazole (3) by thioalkylation of tetrazole-5-thiol 2 with 1,3-dibromopropane in tetrahydrofuran. Finally, the 5-thio-substituted tetrazole derivatives 4a–i were prepared by condensation of 3 with the corresponding amine or thiol. The structures of the newly synthesized compounds were characterized by NMR, LC/MS/MS, IR spectral data and elemental analysis. All the synthesized compounds were screened for their antibacterial and antifungal activities.
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