4.4 Article

Reusable Visible Light Photoredox Catalysts; Catalyzed Benzylic C(sp3)-H Functionalization/Carbocyclization Reactions

Journal

SYNLETT
Volume -, Issue 18, Pages 2707-2713

Publisher

GEORG THIEME VERLAG KG
DOI: 10.1055/s-0032-1317349

Keywords

photoredox; catalysis; C-H activation; cyclization; alkynes; indenes

Funding

  1. National Natural Science Foundation of China [21172060]
  2. Fundamental Research Funds for the Central Universities (Hunan University)

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The C(sp(3))-H functionalization/carbocyclization reaction through the oxidative quenching of visible light photoredox catalysts is established for constructing functionalized 1H-indenes. The process is general for a wide range of benzylic C(sp(3))-H bonds and is highly compatible with common functional groups. Importantly, the visible light photoredox catalysts can be recovered and reused at least three times without loss of catalytic activity.

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