Palladium-Catalyzed β-C(sp<sup>3</sup>)–H Arylation of Aliphatic Ketones Enabled by a Transient Directing Group
作者:Yangyang Wang、Gaorong Wu、Xiaobo Xu、Binghan Pang、Shaowen Liao、Yafei Ji
DOI:10.1021/acs.joc.1c00646
日期:2021.5.21
The direct arylation of aliphatic ketones has been developed via Pd-catalyzed β-C(sp3)–H bond functionalization with 2-(aminooxy)-N,N-dimethylacetamide as a novel transient directing group (TDG), which showed remarkable directing ability to generate arylated products in moderate to good yields. Furthermore, the reaction can tolerate abundant substrate of ketones and aryl iodides. This study expands
Palladium-Catalyzed β-C–H Arylation of Aliphatic Aldehydes and Ketones Using Amino Amide as a Transient Directing Group
作者:Cong Dong、Liangfei Wu、Jianwei Yao、Kun Wei
DOI:10.1021/acs.orglett.9b00366
日期:2019.4.5
This paper describes a new amino-amide-based transient directing group (TDG). The TDG can exhibit better performance in the Pd-catalyzed arylation of aliphatic aldehydes and ketones. This reaction showed good substrate compatibility and regioselectivity. The results indicated that 3-amino-N-isopropylpropionamide was more beneficial to the β-arylation of aliphatic aldehydes than other TDGs under relatively
Ligand-Promoted Palladium-Catalyzed β-C(sp3)–H Arylation of Ketones Using Acetohydrazide as a Transient Directing Group
作者:Kai Jia、Junjie Wang、Chao Jiang、Xuan Wang
DOI:10.1055/a-2310-0880
日期:——
A palladium-catalyzed β-C(sp3)–H arylation of aliphatic ketones by using acetohydrazide as a transient directing group has been developed. The reaction proceeds through a less-favored [5,5]-bicyclic palladacycle intermediate and is promoted by a pyridine ligand.