Catalysis of ester aminolysis by cyclic and acyclic polyethers reported from this laboratory2 has served as an encouragement to examine polyether catalysis in other reactions of amines as well as to develop new polyethers. Recently, syntheses of crown ethers with functionalized side chains (lariat ethers3) have been reported.3"7 In particular, alkoxymethyl-substituted crown ethers have attracted considerable attention as synthons for more complex macrocycles and polymer-supported crowns.4,7"11
Auf dem im Formelschema angegebenen Weg lassen sich die seitenkettenfunktionalisierten Polyether (VI) erhalten, die als Vorstufen für kompliziertere makrocyclische Systeme geeignet sind.
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