Abstract An improved strategy for the synthesis of 3,3′-(oxy-p-phenylene)bis(2,4,5-triphenylcyclopentadienone) was developed, which includes three steps: Friedel–Crafts reaction, oxidation and condensation. Importantly, the use of KMnO4 made the second step simple and efficient, which has potential application to synthesis of bis(cyclopentadienone)s. The course of oxidation has been confirmed by isolated intermediates.

中文翻译：

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双（环戊二烯酮）的改进合成

摘要提出了一种改进的合成3,3'-（氧-对亚苯基）双（2,4,5-三苯基环戊二烯酮）的策略，该策略包括以下三个步骤：Friedel-Crafts反应，氧化和缩合。重要的是，KMnO4的使用使第二步变得简单而有效，这对合成双（环戊二烯酮）具有潜在的应用价值。氧化过程已被分离出的中间体证实。