Synthesis of C-unalkylated calixresorcinarene from 1,3-dimethoxybenzene-formaldehyde condensation
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We proposed a convenient method for the synthesis of C-unalkylated calixresorcinarene octamethyl ether by the HCl-catalyzed condensation of 1,3-dimethoxybenzene with paraformaldehyde in 2-ethoxyethanol. The conformation of the C-unalkylated calixresorcinarene was preferentially chair-like and it changed to a boat-like by heating it in bulk and solution.
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