Abstract The Friedel-Craft condensation between benzalazines and aromatichydrocarbons provide a convenient method for the preparation of unsymmetrical diaryl methanes.
Extremely Efficient Cross-Coupling of Benzylic Halides with Aryltitanium Tris(isopropoxide) Catalyzed by Low Loadings of a Simple Palladium(II) Acetate/Tris(p-tolyl)phosphine System
Highly efficient coupling reactions of benzylic bromides or chlorides with aryltitaniumtris(isopropoxide) [ArTi(O‐i‐Pr)3] catalyzed by a simplepalladium(II) acetate/tris(p‐tolyl)phosphine [Pd(OAc)2/ P(p‐tolyl)3] system are reported. The coupling reactions proceed in general at room temperature employing low catalyst loadings of 0.02 to 0.2 mol%, affording coupling products in excellent yields of
Nickel‐Catalyzed Electrochemical C(sp
<sup>3</sup>
)−C(sp
<sup>2</sup>
) Cross‐Coupling Reactions of Benzyl Trifluoroborate and Organic Halides**
作者:Jian Luo、Bo Hu、Wenda Wu、Maowei Hu、T. Leo Liu
DOI:10.1002/anie.202014244
日期:2021.3.8
electrochemical C(sp2)−C(sp3) cross‐coupling reaction of bench‐stable aryl halides or β‐bromostyrene (electrophiles) and benzylic trifluoroborates (nucleophiles) using nonprecious, bench‐stable NiCl2⋅glyme/polypyridine catalysts in an undivided cell configuration under ambient conditions. The broad reaction scope and good yields of the Ni‐catalyzed electrochemical coupling reactions were confirmed by
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
Development of Versatile Sulfone Electrophiles for Suzuki–Miyaura Cross-Coupling Reactions
作者:Masakazu Nambo、Eric C. Keske、Jason P. G. Rygus、Jacky C.-H. Yim、Cathleen M. Crudden
DOI:10.1021/acscatal.6b03434
日期:2017.2.3
cross-coupling reactions is described. Introducing electron-withdrawing groups on the aryl ring of the sulfone facilitates the Pd-catalyzed activation of C–SO2 bonds. Cross-coupling reactions with fluorinated sulfone electrophiles are reported, leading to a variety of multiply arylated products in good yields. The reactivity of this unusual electrophile is benchmarked versus common electrophiles and its use in