Intermolecular Markovnikov-Selective Hydroacylation of Olefins Catalyzed by a Cationic Ruthenium–Hydride Complex
作者:Junghwa Kim、Chae S. Yi
DOI:10.1021/acscatal.6b00856
日期:2016.5.6
The cationic Ru–H complex was found to be an effective catalyst for the intermolecularhydroacylation of aryl-substituted olefins with aldehydes to form branched ketone products. The preliminary kinetic and spectroscopic studies elucidated a ruthenium-acyl complex as the key intermediate species. The catalytic method directly afforded branched ketone products in a highly regioselective manner while
N-Heterocyclic carbene-palladacyclic complexes: synthesis, characterization and their applications in the C-N coupling and α-arylation of ketones using aryl chlorides
作者:Feng Liu、Yuan-Yuan Hu、Di Li、Quan Zhou、Jian-Mei Lu
DOI:10.1016/j.tet.2018.07.052
日期:2018.9
a one-pot procedure under mild conditions. The structure of 3a was unambiguously confirmed by X-ray single crystal diffraction and it was an active catalyst in the Buchwald-Hartwig amination and α-arylation of ketones even at very lowcatalystloadings (0.01 mol%).
Copper-Catalyzed Regioselective Reaction of Internal Alkynes and Diaryliodonium Salts
作者:Ze-Feng Xu、Chen-Xin Cai、Jin-Tao Liu
DOI:10.1021/ol4003543
日期:2013.5.3
The copper-catalyzed highly regioselective reaction of internal alkynes with diaryliodonium salts was achieved for the first time. α-Arylketones were obtained in moderate to good yields from arylpropargylic alcohols or aryl alkyl alkynes under mild conditions. It was found that the two kinds of substrates underwent two different arylation–oxygenation pathways under different reaction conditions based
N-heterocyclic carbene-palladium-imine complex catalyzed α-arylation of ketones with aryl and heteroaryl chlorides under air atmosphere
作者:Hui-Yang Lu、An Shen、Yong-Qing Li、Yu-Cai Hu、Chen Ni、Yu-Cai Cao
DOI:10.1016/j.tetlet.2020.152124
日期:2020.7
synthesized and unambiguously confirmed by X-ray single crystal diffraction. It was found to be an efficient and air-stable catalyst for the α-arylation of ketones. The reaction could be operated in air without any negative effect. Non-activated aryl and heteroaryl chlorides have been successfully applied in the reaction with only 0.5 mol% catalyst loadings under air atmosphere. Excellent to good product yields
Blue Light Promoted Difluoroalkylation of Aryl Ketones: Synthesis of Quaternary Alkyl Difluorides and Tetrasubstituted Monofluoroalkenes
作者:Kangkui Li、Jingchao Chen、Chunhui Yang、Keyang Zhang、Chunxiang Pan、Baomin Fan
DOI:10.1021/acs.orglett.0c01294
日期:2020.6.5
cost-effective method for the preparation of fluoroalkylated compounds has been described by the direct photoexcitation of halofluoroalkanes with blue light absorptivity, enabling the difluoroalkylation of arylketones. The methodology has provided an efficient, mild, and catalyst-free synthetic method for quaternary difluoroalkylated arenes and tetrasubstituted monofluoroalkenes.