4.8 Article

Visible-Light-Driven Copper-Catalyzed C(sp3)-O Cross-Coupling of Benzylic Radicals with Phenols

Journal

ORGANIC LETTERS
Volume 22, Issue 6, Pages 2333-2338

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.0c00532

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Funding

  1. NNSFC [21971081, 91856119, 21622201, 21820102003, 91956201, 21772053]
  2. Science and Technology Department of Hubei Province [2017AHB047]
  3. Program of Introducing Talents of Discipline to Universities of China (111 Program) [B17019]

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A visible-light-driven, copper-catalyzed C(sp(3))-O coupling of benzylic radicals with phenols is described for the first time. This operationally simple and robust process features mild conditions, broad scope, and high functional-group tolerance, enabling the construction of a diverse range of cyanoalkylated aryl ethers (33 examples). Key to this protocol is the dual role of copper salt that acts not only as a photosensitizer but also as a cross-coupling catalyst.

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