The field in dearomatization of aromatic compounds for the construction of spirocycle compounds has been developed rapidly over the last two decades and it provides alternative synthetic method without using extra stoichiometric amounts of chemical oxidants or reductants. In addition, the radical cascade reactions of alkenes or alkynes that produce multiple chemical bonds in one‐step are significant in the direct and efficient building of complex molecules. By combining these two concepts, dearomatization and radical cascade reactions of alkenes or alkynes opens a new and powerful avenue in accessing spirocycle molecules. These cascade reactions have been well explored in the past decade. As a result, we summarize recent eventful advances in this rapidly growing area as a review, in which the typical examples are listed and mechanism are also discussed.

中文翻译：

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自由基脱芳香化反应制备螺环化合物的最新进展

在过去的二十年中，用于制造螺环化合物的芳香族化合物的脱芳香化领域迅速发展，它提供了替代合成方法，而无需使用化学计量过量的化学氧化剂或还原剂。此外，一步一步产生多个化学键的烯烃或炔烃的自由基级联反应对于直接有效地构建复杂分子非常重要。通过结合这两个概念，烯烃或炔烃的脱芳香化作用和自由基级联反应为获取螺环分子提供了一条新的强大途径。在过去十年中，已经很好地探索了这些级联反应。因此，我们总结了这一快速发展领域中近期的重大进展，作为回顾，