Silver-Promoted Radical Cascade Aryldifluoromethylation/Cyclization of 2-Allyloxybenzaldehydes for the Synthesis of 3-Aryldifluoromethyl-Containing Chroman-4-one Derivatives
Pd-Catalyzed α-Arylation of Trimethylsilyl Enolates of α,α-Difluoroacetamides
作者:Shaozhong Ge、Sophie I. Arlow、Michael G. Mormino、John F. Hartwig
DOI:10.1021/ja508590k
日期:2014.10.15
ilyl)acetamides with aryl and heteroaryl bromides catalyzed by an air- and moisture-stable palladacyclic complex containing P(t-Bu)2Cy as ligand. A broad range of electronically varied aryl and heteroaryl bromides underwent this transformation to afford α-aryl-α,α-difluoroacetamides in high yields. Due to the electrophilicity of the fluorinated amide, this palladium-catalyzed cross-coupling reaction
作者:Huaxin Zhao、Guobin Ma、Xiaojuan Xie、Yong Wang、Jian Hao、Wen Wan
DOI:10.1039/c9cc00984a
日期:——
A palladium(II)-catalyzed decarboxylative meta-selective C–H difluoromethylation of arenes has been developed from easily accessible difluoroacetic acids. Initial mechanistic studies disclosed that a reasonable migratory insertion is involved in this meta-C–H functionalization.