Formation of mono- and di-amide-calix[4]arene derivatives from the reaction of <i>p-tert</i>-butyl-calix[4]arene and <img src='/image/spc_char/alpha.gif' border=0>-chloro-<i>N</i>,<i>N</i>-diethylacetamide in the presence of sodium hydride

Abstract

The formation of mono- and di (1,2 and 1,3)-amide derivatives of <i>p-tert</i>-butylcalix[4]arene in the presence of sodium hydride has been demonstrated. All the compounds have been purified and characterized by various spectral methods. Both ¹H and ¹³C NMR spectra exhibit clear-cut differences between the 1,2-di- and 1,3-di-amide derivatives.