SYNTHESIS OF SIX MEMBERED FUSED AND FIVE MEMBERED HETEROCYCLES, POSSESSING THE β,β'-TRICARBONYLFUNCTIONALITY:COORDINATION MODE AGAINST SELECTED ENVIRONMENTAL IONS

摘要

Coumarins, quinolinones, tetramic and tetronic acid analogues, play an integral role in biological systems and forms a variety of complexes with environmentally active metals. A survey of their synthesis as ligands and their ability to form coordination compounds is presented.