Tetrahedron letters

An efficient synthesis of 4, 4′, 5, 5′-tetraiododibenzo-24-crown-8 and its highly conjugated derivatives

JJ Pak, JL Mayo, E Shurdha

Index: Pak, Joshua J.; Mayo, Jaime L.; Shurdha, Endrit Tetrahedron Letters, 2006 , vol. 47, # 2 p. 233 - 237

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Citation Number: 13

Abstract

4, 4′, 5, 5′-Tetraiododibenzo-24-crown-8 (), a practical building block, was prepared under efficient and mild reaction conditions starting from the simple starting material, catechol (). Highly conjugated 4, 4′, 5, 5′-tetraethynyldibenzo-24-crown-8) were prepared via a Sonogashira coupling reaction from tetraiodocrown ether. These highly conjugated crown ethers form complexes in CD2Cl2 with dibenzylammonium hexafluorophosphate in ...

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