Abstract
Based on the regioselective oxidation of 1,4,5-trimethoxynaphthalene by cerium (IV) ammonium nitrate, an efficient synthesis of juglone methyl ether has been achieved with high overall yield (74%) and good purity (98.6%). Compared with the reported methods, the reaction conditions are milder and the work-up of each step is much simpler. Moreover, the new strategy considerably reduces the cost in the synthesis of juglone methyl ether and is suitable for large-scale preparations.
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