Novel spiro bis-crown ethers derivatives with four benzo units connected via one carbon bridges have been
prepared. These compounds represent well preorganized cavities with interesting complexation abilities towards cations.
These macrocyclic were prepared by a four-step via template method by utilizing simple precursors catechol, oliethylen
glycol and penta erythritol tetra bromide in good yield. Additionally, cesium carbonate could be used as an excellent base
for these reactions.