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An ionic complex has been obtained from N2O4 in the presence of the macrocyclic polyether 18-crown-6. This crystalline compound was used as an effective deprotecting agent for the conversion of 1,1-diacetates to their corresponding aldehydes at room temperature with quantitative yields.
The financial support for this work by the research affairs of Bu-Ali Sina University, Hamadan, Iran is acknowledged.
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