Photo-Ni-Dual-Catalytic C(sp<sup>2</sup>)–C(sp<sup>3</sup>) Cross-Coupling Reactions with Mesoporous Graphitic Carbon Nitride as a Heterogeneous Organic Semiconductor Photocatalyst
作者:Jagadish Khamrai、Indrajit Ghosh、Aleksandr Savateev、Markus Antonietti、Burkhard König
DOI:10.1021/acscatal.9b05598
日期:2020.3.20
nitride (mpg-CN) and a homogeneous nickel catalyst with visible-light irradiation at room temperature affords the C(sp2)–C(sp3) cross-coupling of aryl halides and potassium alkyl trifluoroborates by single electron transmetallation. Like the homogeneously catalyzed protocol, the reaction is compatible with a variety of functional groups including electron-donating and electron-withdrawing aryl and heteroaryl
A Highly Efficient Palladium/Copper Cocatalytic System for Direct Arylation of Heteroarenes: An Unexpected Effect of Cu(Xantphos)I
作者:Jinkun Huang、Johann Chan、Ying Chen、Christopher J. Borths、Kyle D. Baucom、Robert D. Larsen、Margaret M. Faul
DOI:10.1021/ja100354j
日期:2010.3.24
Heteroarenes are important structural moieties in many chemical industry fields. A highly efficient Pd/Cu-catalyzed C-H arylation method for a range of heterocycles has been discovered. It was found that the key to the success of this transformation is a combination of a palladiumcatalyst and a well-defined copper cocatalyst. The efficiency and lowloadings of catalyst (0.25 mol %) and cocatalyst