SYNTHESIS OF NEW PODAND POSSESSING THREE TROPOLONOIDS CON-NECTED BY TWO OLIGOETHYLENE GLYCOL CHAINS

摘要

For the purpose of exploitation of new podands possessing positive cooperativity in cation binding.three tropolonoid moieties are connected by two oligoethylene glycol chains.This note describes the preparation of diethylene to pentaethylene glycol derivatives possessing three tropolonoids (4n).