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Journal Articles Angewandte Chemie International Edition Year : 2019

Visible Light Induced Rhodium(I)-Catalyzed C-H Borylation

Abstract

An efficient visible light induced rhodium(I)-catalyzed regioselective borylation of aromatic C-H bonds is reported. The photocatalytic system is based on a single NHC-Rh complex capable of both harvesting visible light and enabling the bond breaking/forming at room temperature. The chelating nature of the NHC-carboxylate ligand was critical to ensure the stability of the Rh complex and to provide excellent photocatalytic activities. Experimental mechanistic studies evidenced a photooxidative ortho C-H bond addition upon irradiation with blue LEDs, leading to a cyclometalated Rh -hydride intermediate.
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Dates and versions

hal-02307077 , version 1 (16-12-2019)

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Jompol Thongpaen, Romane Manguin, Vincent Dorcet, Thomas Vives, Carine Guyard-Duhayon, et al.. Visible Light Induced Rhodium(I)-Catalyzed C-H Borylation. Angewandte Chemie International Edition, 2019, 58 (43), pp.15244-15248. ⟨10.1002/anie.201905924⟩. ⟨hal-02307077⟩
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