Synthesis of novel tetra-tert-butylcalix[4]arene derivatives linked to two series of 1,2,4-triazole and 1,3,4-oxadiazole substituted

Two series of 1,2,4-triazole-5-thiones and 1,3,4-oxadiazole-5-thiones substituted tetratert- butylcalix[4]arenederivatized at lower rim were synthesized by the reaction of 1,2,4- triazole-5-thione and 1,3,4-oxadiazole-5-thione with 5,11,17,23-tetra-tert-butyl-25,27-bis(3- bromopropoxy)-26,28-dihydroxy calix[4]arene(2). The synthesized compounds were characterized by FT-IR, 1H NMR, 13C NMR, spectral data elemental analysis and ESI-MS.