Polyfunctional derivatives of xanthenes and benzoxanthenes in the form of organic perchlorates have been obtained by the interaction of 1,3-benzo(naphtho)dioxin-4(1)-ones with the Vilsmeier-Haack reagent at 110 °C for 5 h. The rearrangement has occurred as an electrophilic triggered recyclization due to the geminal arrangement of oxygen atoms in the six-membered ring as well as the presence of a lactone group in the structure of the starting 1,3-benzo(naphtho)dioxin-4(1)-ones.

Graphic abstract

中文翻译：

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Vilsmeier-Haack试剂下1,3-苯并（萘）二恶英-4（1）-的新型重排

通过在110°C下将1,3-苯并（萘）二恶英-4（1）-1与Vilsmeier-Haack试剂相互作用5 h，获得了有机高氯酸盐形式的黄嘌呤和苯并氧杂蒽的多官能衍生物。由于六元环中氧原子的双键排列以及起始的1,3-苯并（萘）二恶英-4（内酯基团）中内酯基团的存在，重排反应作为亲电触发的再循环发生。 1）-个。

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