SYNTHESIS AND CHACTERIZATION CALIX[4]PYRROLE DERIVATIVES VIA CONVENTIONAL AND MICROWAVE IRRADIATION METHOD

A rapid, convenient, efficient and environment friendly method using microwave irradiation technique for synthesis of meso-tetra(methyl) meso-tetra(3, 5-dihydroxyphenyl) calix[4]pyrrole and its various azo derivatives is presented. Further, two novel azo-calix[4]pyrrole Amberlite XAD-2 polymeric chelating resins were synthesized by covalently linking diazotized Amberlite XAD-2 with meso-tetra(methyl) meso-tetra(3, 5-dihydroxyphenyl) calix[4]pyrrole and meso-tetra(methyl) meso-tetra {(3, 5-dihydroxy phenyl)- 4-(2-diazenyl phenol)} calixpyrrole macrocycles. The structures of all host calix[4]pyrrole derivatives were confirmed on the basis of various physico-chemical techniques such as elemental analysis, FT-IR, 1H NMR, 13C NMR and Mass.