A fast photochemical C–C bond formation between cyclic ethers/acetals and olefins using di-tert-butyl peroxide (DTBP) was developed. This method provides easy access to 2-substituted cyclic ethers, and 2- or 4-substituted cyclic acetals. Acyl/formyl groups or diols can be obtained by the hydrolysis of the 2- or 4-substituted cyclic acetals, respectively. The reactions proceeded at room temperature and gave the expected products in good to excellent yields; efficient reactions were completed within 0.5 h at room temperature in >95% yield.

中文翻译：

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使用^t BuOO ^t Bu将环醚/缩醛光化学加成到烯烃中：掩蔽的酮/醛和二醇的合成

开发了使用二叔丁基过氧化物（DTBP）在环状醚/缩醛与烯烃之间快速形成光化学C-C键的方法。此方法可轻松获得2-取代的环醚和2-或4-取代的环缩醛。酰基/甲酰基或二醇可分别通过2-或4-取代的环状缩醛的水解获得。反应在室温下进行，得到预期的产物，收率良好至极好。在室温下0.5小时内完成高效反应，收率> 95％。