Af-(2-Chloroacetoxyethyl)-chloroacetamide (1) was obtained by the reaction of ethanolamine with chloroacetyl chloride. Treatment of /j- tert-butylcalix[4] arene or j?-tert-butylcalix[6] arene with compound 1 under K2C03/benzene and ^COs/toluene system for 48 h gave the calix[4] crown and calix[6]crown containing ester and amido groups in 37% and 25% yields, respectively. The structures of new compounds were characterized by elemental analyses, FAB-MS and !H NMR spectra, which indicates that the new type of calixcrowns adopts cone conformation bridged at 1,3- and 1,4-positions, respectively.

Key words: CROWN ETHER;ETHANOL P;ACYL CHLORIDES P;calixarene;METHYLBENZENE, MS;ELEMENTAL ANALYSIS;1HNMR