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Carbonyl bis(4’-benzo-15-erown-5) has been synthesized by heating the mixture of benzo-15-crown-5 and 4’-earboxybenzo-15-crawn-5 in polyphosphoric aeid(PPA), and bis(4’-benzo-15-crown-5) carbinol is obtained by reducing carbonyl bis(4’-benzo-15-crown-5) w