A General and Practical Palladium-Catalyzed Direct α-Arylation of Amides with Aryl Halides
作者:Bing Zheng、Tiezheng Jia、Patrick J. Walsh
DOI:10.1002/adsc.201300851
日期:2014.1.13
An efficient system for the direct catalytic intermolecular α‐arylation of acetamide derivatives with aryl bromides and chlorides is presented. The palladium catalyst is supported by Kwong’s indole‐based phosphine ligand and provides monoarylated amides in up to 95% yield. Excellent chemoselectivities (>10:1) in the mono‐ and diarylation with aryl bromides were achieved by careful selection of bases
Palladium-Catalyzed Direct Intermolecular α-Arylation of Amides with Aryl Chlorides
作者:Bing Zheng、Tiezheng Jia、Patrick J. Walsh
DOI:10.1021/ol4019002
日期:2013.8.16
An efficient catalytic system for the direct intermolecularα-arylation of acetamide derivatives with aryl chlorides is presented. Chemoselectivities up to 10:1 in the mono- and diarylation of acetamides were achieved by careful selection of bases, solvents, and stoichiometry. Bis-arylated amides were prepared in up to 95% yield.