A photooxygenation–epoxidation cascade sequence converting alkenes to epoxy alcohols was developed and evaluated in batch and continuous-flow systems. In the batch system, the undesired interactions between the photooxygenation and epoxidation catalysts resulted in suboptimal yields, whereas the fine control of reaction parameters in the flow system allowed the allyl hydroperoxides produced through photooxygenation of alkenes to be rapidly converted to epoxy alcohols in yields of up to 93%. The developed procedure allows one to avoid an important synthetic bottleneck, works well where traditional batch synthesis fails, and can be scaled up to meet the needs of industrial production, thus presenting a valuable addition to the toolbox of practicing organic chemists.

中文翻译：

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用于环氧醇流动合成的光氧化-环氧化级联序列


在间歇和连续流系统中开发并评估了将烯烃转化为环氧醇的光氧化-环氧化级联序列。在间歇系统中，光氧合和环氧化催化剂之间的不期望的相互作用导致收率不理想，而流动系统中反应参数的精细控制使得通过烯烃光氧合产生的烯丙基氢过氧化物能够快速转化为环氧醇，收率高达至 93%。所开发的方法可以避免重要的合成瓶颈，在传统批量合成失败的情况下表现良好，并且可以扩大规模以满足工业生产的需要，从而为实践有机化学家的工具箱提供了宝贵的补充。