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.
Ruthenium(<scp>ii</scp>)-catalyzed ortho-C–H arylation of diverse N-heterocycles with aryl silanes by exploiting solvent-controlled N-coordination
作者:Pradeep Nareddy、Frank Jordan、Michal Szostak
DOI:10.1039/c7ob00818j
日期:——
We report the first method for the direct, regioselectiveRu(II)-catalyzed oxidative arylation of C–H bonds in diverse N-heterocycles with aryl silanes by exploiting solvent-controlled N-coordination. The reaction takes advantage of the attractive features of organosilanes as coupling partners, providing proof of concept for N-directed Ru(II)-catalyzed C–H arylation. This novel, operationally-simple
RuCl<sub>3</sub>-Catalyzed Regioselective Diarylation with Aryl Tosylates via C-H Activation
作者:Baoli Zhao
DOI:10.1080/00397911.2012.688160
日期:2013.8.3
The direct arylation of arylpyridines with aryl tosylates was carried out smoothly in the presence of 2.5mol% RuCl3 using MesCOOH as crucial promoter to generate biarylated products. The method is simple, efficient, safe, and regioselective, can be performed in the absence of expensive ligands, and does not require any precautions with regard to the exclusion of air and moisture. The biarylated products were obtained in good yields. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file.