Higher π-extended naphthalene, contained in methylnaphthalenes, which could capture alkyl radicals via SOMO–LUMO interactions, enabled the development of Cu-catalyzed formal [4 + 2] and [3 + 2] cycloadditions between methylnaphthalenes and electron-deficient alkenes. Under copper catalysis, a series of electron-deficient alkenes and methylnaphthalenes with different substituents were successfully incorporated with di-tert-butyl peroxide (TBP) as an oxidant and radical initiator, providing a wide range of cycloadducts.

中文翻译：

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铜催化的甲基萘和电子不足的烯烃的脱氢形式[4 + 2]和[3 + 2]环加成反应

甲基萘中包含的较高π扩展萘可以通过SOMO-LUMO相互作用捕获烷基，从而促进了甲基萘和缺电子烯烃之间铜催化的正式[4 + 2]和[3 + 2]环加成反应的发展。在铜催化下，一系列具有不同取代基的缺电子烯烃和甲基萘已成功地与过氧化二叔丁基（TBP）结合用作氧化剂和自由基引发剂，从而提供了多种环加合物。