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- W4366605967 abstract "Copper-catalyzed radical-relay reactions provide a versatile strategy for selective C–H functionalization; however, reactions with peroxide-based oxidants often require excess C–H substrate. Here, we report a photochemical strategy to overcome this limitation by using a Cu/2,2′-biquinoline catalyst that supports benzylic C–H esterification with limiting C–H substrate. Mechanistic studies indicate that blue-light irradiation promotes carboxylate-to-copper charge transfer, reducing resting-state CuII to CuI, which activates the peroxide to generate an alkoxyl radical hydrogen-atom-transfer species. This “photochemical redox buffering” introduces a unique strategy to sustain the activity of Cu catalysts in radical-relay reactions." @default.
- W4366605967 created "2023-04-23" @default.
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- W4366605967 date "2023-04-21" @default.
- W4366605967 modified "2023-10-16" @default.
- W4366605967 title "Benzylic C–H Esterification with Limiting C–H Substrate Enabled by Photochemical Redox Buffering of the Cu Catalyst" @default.
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- W4366605967 doi "https://doi.org/10.1021/jacs.3c01662" @default.
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