Palladium-Catalyzed Benzylation of Heterocyclic Aromatic Compounds
作者:David Lapointe、Keith Fagnou
DOI:10.1021/ol901689q
日期:2009.9.17
Broadly applicable palladium-catalyzed heteroarene benzylation reactions are described with a focus on the most challenging heterocyclic classes under traditional benzylation techniques such as sulfur-containing heterocycles and those bearing functional groups that would be incompatible with reactions requiring Lewis acids and/or strong bases.
Suzuki-Miyaura Cross-Couplings
Mediated by <i>trans</i>-PdBr(<i>N</i>-Succ)(PPh<sub>3</sub>)<sub>2</sub>: A
Convenient Synthetic Method for Diarylmethanes and Aryl(heteroaryl)methanes
作者:Ian Fairlamb、Richard Taylor、Petr Sehnal
DOI:10.1055/s-0028-1083293
日期:——
Diarylmethanes can be accessed efficiently by Suzuki-Miyauracross-couplings of arylboronic acids with benzyl halides mediated by trans-PdBr(N-Succ)(PPh3)2. The methodology can be applied to the synthesis of aryl(heteroaryl)methanes. catalysis - palladium - pseudohalide - phosphine
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
Heterogeneous Metallaphotocatalytic C(sp<sup>2</sup>)–C(sp<sup>3</sup>) Cross-Coupling Reactions with Integrated Bipyridyl-Ni(II)-Carbon Nitride
作者:Xiao Dan、Qian Yang、Liuzhuang Xing、Yurong Tang、Wentao Wang、Yunfei Cai
DOI:10.1021/acs.orglett.3c01384
日期:2023.6.9
A fully heterogeneous metallaphotocatalytic C–C cross-coupling of aryl/vinyl halides with alkyl/allyltrifluoroborates has been developed by employing integrated bipyridyl-Ni(II)-carbon nitride as a stable and recyclable bifunctional catalyst. This visible-light-mediated heterogeneous protocol allows for the sustainable synthesis of diverse valuable diarylmethanes and allylarenes in high efficiency
Simple Palladium(II) Precatalyst for Suzuki−Miyaura Couplings: Efficient Reactions of Benzylic, Aryl, Heteroaryl, and Vinyl Coupling Partners
作者:Michael J. Burns、Ian J. S. Fairlamb、Anant R. Kapdi、Petr Sehnal、Richard J. K. Taylor
DOI:10.1021/ol702291r
日期:2007.12.1
trans-PdBr(N-Succ)(PPh3)(2) (1) is a universally effective precatalyst for Suzuki-Miyaura cross-couplings of benzylic halides with aryl- or heteroarylboronic acids. Substituted aryl halides and halogenated cyclic enones can be cross-coupled with aryl- or vinylboronic acids in excellent yields. Catalyst recycling is also demonstrated.