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Issue 10, 2017
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Photoredox catalytic intramolecular imine C–H bond functionalization using ligand free Cu(II) salts

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Abstract

Photocatalysis is a powerful method for organic synthesis because of the lack of side products/waste materials and high efficiency, but suitable reaction types are still underexplored. Inspired by the function of a directing group for C–H bond activation, we induce the directing group notion into photocatalysis to activate the C–H bond through light treatment only if any metal-directing group complexes are photoinitiators. Herein, we found that conjugated N,O-bidentate copper(II) complexes were novel photoinitiators, and thereby could be used as the directing group to activate their intramolecular imine C(sp2)–H to produce the corresponding cyclized products via a UV triggered free radical mechanism.

Graphical abstract: Photoredox catalytic intramolecular imine C–H bond functionalization using ligand free Cu(ii) salts

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Publication details

The article was received on 03 May 2017, accepted on 05 Jul 2017 and first published on 06 Jul 2017


Article type: Research Article
DOI: 10.1039/C7QO00348J
Citation: Org. Chem. Front., 2017,4, 2022-2025
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    Photoredox catalytic intramolecular imine C–H bond functionalization using ligand free Cu(II) salts

    X. Ren, Q. Wang, W. Yu, X. Zhan, Y. Yao, B. Qin, M. Dong and X. He, Org. Chem. Front., 2017, 4, 2022
    DOI: 10.1039/C7QO00348J

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