A one-step synthesis of enones from olefins is described. The reaction was performed under visible-light irradiation in the presence of molecular oxygen and a photocatalyst. The reaction proceeded with various types of trisubstituted olefins to give enones in good yields with high regioselectivity. In particular, oxygen- and nitrogen-containing functional groups, heteroaromatic rings, and cyclopropanes were tolerated. Mechanistic studies and previous reports indicated that the active oxygen species generated in the reaction system is singlet oxygen.

中文翻译：

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利用分子氧通过可见光促进氧化三取代烯烃直接合成烯酮

描述了从烯烃一步合成烯酮。在分子氧和光催化剂存在下，在可见光照射下进行反应。该反应与各种类型的三取代烯烃一起进行，以高产率和高区域选择性得到烯酮。特别是，含氧和含氮的官能团、杂芳环和环丙烷是可以容忍的。机理研究和先前的报告表明，反应体系中产生的活性氧是单线态氧。