Calix (4) arene-crown, its preparation process and its use for the selective extraction of cesium.

摘要

The invention relates to novel calixarenes of formula (I) wherein R 1 represents a ETHER CHAIN ​​- CORONA comprising at least two cores aryl or cycloalkyl, R 2 is a hydroxyl group or C or both R 2 together form a ETHER CHAIN ​​- CROWN AS R 1; YR 3 TA REPRESEN a hydrogen atom or an alkyl group. Calixarenes ARE USEFUL TO DRAW SEPARATELY Cesium aqueous solutions, PARTICULARLY INVOLVING HIGH CONCENTRATIONS OF SODIUM.