Synthesis of Noria-like Macrocycles Containing Alkoxy Groups based on a Dynamic Covalent Chemistry (DCC) System by the A2 + B4 Condensation

We succeeded in the synthesis of new noria-like macrocycles by condensation of 3-alkoxyphenol as A 2 type monomers, and pentanedial as B 4 type monomer. These condensation reactions were performed using several acids as catalysts in ethanol and CHCl 3 . It was found that these reactions proceeded by DCC to afford soluble polymers, oligomers, and noria-like ladder macrocycles. As the result, the selective synthesis of the targeted noria-like macrocycles was achieved successfully in high yields.