THE DERIVATIZATION OF ESTERS OF P-TERT-BUTYLCALIX[6]ARENE WITH SOME UNSYMMETRICAL VIC-DIOXIME COMPOUNDS

The oximated derivatives of the p-tert-butylcalix[6]arene which are ob tained by the esterification of the calixarene on the lower rim and th eir interaction with some unsymmetrical vic-dioximes. The tetraester o f the calixarene isolated by the reaction of calixarene with p-nitrobe nzoyl chloride in high yield. The nitro groups of tetraester compound reduced to tetraamino groups by SnCl2.2H2O and, the oximated derivativ e obtained by the macrocyclic compound treatment with monochloroglyoxi me, phenylchloroglyoxime and, p-tolylchloroglyoxime which are unsymmet rical vic-dioximes. Thus, the complexation ability of this new macrocy clic compounds by some transition metals increased according to the un substituted tetraester of p-tert-butylcalix[6]arene.