Synthesis and characterization of novel S-(5-aryl-1,3,4-oxadiazol-2-yl) 2-chloroethane- thioate linkage tetra-tert-butyl calix[4] arene derivatives

A series of S-(5-aryl-1,3,4-oxadiazol-2-yl)2-chloroethanethioate(2a-e) substituted tetratert- butyl calix[4]arene derivatized at lower rim were synthesized by the reaction of S-(5-aryl- 1,3,4-oxadiazol-2-yl)2-chloroethanethioate with tetra-tert-butylcalix[4]arene (1). The synthesized compounds were characterized by FT-IR, 1H NMR, 13C NMR, elemental analysis.