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
can act as temporary directing groups in the Pd-catalyzed coupling of arenes with aldehydes or ketones. By reversibly binding to these latter substrates just long enough for the Pd catalysis to ensue, the amino acids eliminate the need for more laborious directing group manipulations. Science, this issue p. 252 Amino acids can reversibly complex with aldehydes and ketones to direct palladium-catalyzed