Electrophotocatalytic oxygenation of multiple adjacent C–H bonds

Tao Shen, Yi-Lun Li, Ke-Yin Ye () and Tristan H. Lambert ()
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Tao Shen: Cornell University
Yi-Lun Li: Fuzhou University, Fuzhou
Ke-Yin Ye: Fuzhou University, Fuzhou
Tristan H. Lambert: Cornell University

Nature, 2023, vol. 614, issue 7947, 275-280

Abstract: Abstract Oxygen-containing functional groups are nearly ubiquitous in complex small molecules. The installation of multiple C–O bonds by the concurrent oxygenation of contiguous C–H bonds in a selective fashion would be highly desirable but has largely been the purview of biosynthesis. Multiple, concurrent C–H bond oxygenation reactions by synthetic means presents a challenge1–6, particularly because of the risk of overoxidation. Here we report the selective oxygenation of two or three contiguous C–H bonds by dehydrogenation and oxygenation, enabling the conversion of simple alkylarenes or trifluoroacetamides to their corresponding di- or triacetoxylates. The method achieves such transformations by the repeated operation of a potent oxidative catalyst, but under conditions that are sufficiently selective to avoid destructive overoxidation. These reactions are achieved using electrophotocatalysis7, a process that harnesses the energy of both light and electricity to promote chemical reactions. Notably, the judicious choice of acid allows for the selective synthesis of either di- or trioxygenated products.

Date: 2023
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DOI: 10.1038/s41586-022-05608-x

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