Synthesis of Acridinyl-and Fluorenylidenehydrazido Derivatives of p-tert-Butylcalix[4]arene

摘要

p-tert-Butylcalix[4]arenes substituted at the lower rim by acetic acid hydrazide residues reacted with methoxy(ethoxy)acridine and fluoren-9-one derivatives to give a series of calixarenes containing N'-fluorenylidene-and N'-acridinylacetohydrazide residues.It was found that modification of the hydrazide moiety does not affect the conformation of the initial macroring and that it can lead in some cases to unsym-metrically substituted calixarenes.