The synthesis of a calix[4]arene derivative immobilised in 1,3-alterna
te conformation by alkylation at the lower rim and bearing four catech
oylamide units at the upper rim was achieved. The chelating coordinati
on sites were by construction oriented, in an alternating mode, below
and above the main plane of the backbone, thus affording an exo-ditopi
c ligand. Copyright (C) 1996 Elsevier Science Ltd