Four tetraallkylethers 3a-3d (alkyl: n-C~4H~9、 n-C~7H~1~7、n- C~1~2H~2~5、n-C~1~6H~3~3 of calix[4] arene and their corresponding p- tetraacetyl derivatives 4a-4d were prepared by the etheration with NaH as base in DMF and acetylation on phenyl. ^1H NMR indicated that all new calix[4] arene derivatives have cone conformation.

Key words: DERIVATIVES, NMR SPECTROMETRY, INFRARED SPECTROPHOTOMETRY, CONFORMATION, ELEMENTAL ANALYSIS, CALIXARENE