catalytic reactions using transition metals is an important challenge in organic chemistry in which the intermediates are related to those produced in the classical cross-couplingreactions. As part of our research program devoted to the development of metal-catalyzed reactions using indium organometallics, a protocol for the C⁻H activation and C⁻C coupling of 2-arylpyridines with triorganoindium reagents
RuCl<sub>3</sub>⋅<i>x</i> H<sub>2</sub>O-Catalyzed Direct Arylation of Arenes with Aryl Chlorides in the Presence of Triphenylphosphine
作者:Ning Luo、Zhengkun Yu
DOI:10.1002/chem.200902612
日期:2010.1.18
A simple, efficient, and economically attractive catalytic system has been developed for the directarylation of arenes with arylchlorides with the RuCl3⋅xH2O/PPh3/Na2CO3/N‐methyl‐2‐pyrrolidone system (see scheme). A remarkable effect of the nature of the base was observed, with Na2CO3 giving the best results.
一个简单的,高效和经济上有吸引力的催化体系已被开发用于芳烃的与和的RuCl芳基氯的直接芳基化3 ⋅ X ħ 2 O / PPH 3 /钠2 CO 3 / Ñ甲基-2-吡咯烷酮系统(参见方案)。观察到了碱性质的显着影响,其中Na 2 CO 3给出了最佳结果。
Efficient Rh(I)-Catalyzed Direct Arylation and Alkenylation of Arene C−H Bonds via Decarbonylation of Benzoic and Cinnamic Anhydrides
Efficient rhodium(I)-catalyzed regioselective direct arylation and alkenylation of aromatic C−H bonds has been realized with aromatic carboxylic and cinnamic anhydrides as the coupling partners via decarbonylation and C−H activation under phosphine-free conditions.
Site-Selective C–H/C–N Activation by Cooperative Catalysis: Primary Amides as Arylating Reagents in Directed C–H Arylation
作者:Guangrong Meng、Michal Szostak
DOI:10.1021/acscatal.7b02540
日期:2017.10.6
this report constitutes the first biaryl synthesis enlisting common primary amides by N–C bond activation. This report also discloses for the first time the potential of generic, acyclic secondary amides as arylating reagents in directed C–H arylation. Considering the fundamental importance of biaryls and the key role of primary amides in organic synthesis, we expect that this concept by synergistic
The direct arylation of aryl iodides with 2-phenylpyridines and related substrates was carried out smoothly in the presence of 5 mol% RuCl3 using benzoyl peroxide as a promoter to generate biarylated products in high yields. The method is simple, efficient, and regioselective, and employs only commercially available reagents.