Novel Exocyclic Ligands. Synthesis of Selenium Calix[4]arenes and Their High Extraction Selectivity for Ag+
Abstract
1,3-Lower rim selenium-containing calix[4]arenes are synthesized from 1,3-di(2-chloroethoxy)-p-tert-butylcalix[4]arene and corresponding diselenides, and found to possess high Ag+ extraction selectivity.