863988-32-3Relevant articles and documents
Visible Light Induced Rhodium(I)-Catalyzed C?H Borylation
Thongpaen, Jompol,Manguin, Romane,Dorcet, Vincent,Vives, Thomas,Duhayon, Carine,Mauduit, Marc,Baslé, Olivier
supporting information, p. 15244 - 15248 (2019/10/22)
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?RhI 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 RhI 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 RhIII-hydride intermediate.
Aerobic Direct C(sp2)-H Hydroxylation of 2-Arylpyridines by Palladium Catalysis Induced with Aldehyde Auto-Oxidation
Das, Prasenjit,Saha, Debajyoti,Saha, Dibyajyoti,Guin, Joyram
, p. 6050 - 6054 (2016/09/09)
Herein we present a Pd-catalyzed direct C-H hydroxylation of 2-arylpyridines using molecular oxygen (O2) as the sole oxidant. The key aspects of the method include: (a) the activation of molecular oxygen with a nontoxic and inexpensive aldehyde
Direct ortho-Hydroxylation of 2-Phenylpyridines using Palladium(II) Chloride and Hydrogen Peroxide
Yamaguchi, Tomoaki,Yamaguchi, Eiji,Tada, Norihiro,Itoh, Akichika
supporting information, p. 2017 - 2021 (2015/06/23)
Direct functionalization of the ubiquitous C-H bond is receiving much attention because complex structures can be formed from simple precursors. This paper reports a useful method for the direct hydroxylation of 2-phenylpyridines using palladium(II) chloride and aqueous hydrogen peroxide. In this method, hydrogen peroxide, which has high atom efficiency, is employed as the oxidant and phenol derivatives are generated via C-H activation.