Copper-Catalyzed Electrophilic Amination of Heteroarenes and Arenes by CH Zincation
作者:Stacey L. McDonald、Charles E. Hendrick、Qiu Wang
DOI:10.1002/anie.201311029
日期:2014.4.25
Direct amination of heteroarenes and arenes has been achieved in a one‐pot CH zincation/copper‐catalyzed electrophilic amination procedure. This amination method provides an efficient and rapid approach to access a diverse range of heteroaromatic and aromatic amines including those previously inaccessible using CH amination methods. The mild reaction conditions and good functional‐group compatibility
杂芳烃和芳烃的直接胺化已经在一锅C - H锌化/铜催化的亲电胺化过程中实现。这种胺化方法提供了一种高效、快速的方法来获得各种杂芳胺和芳香胺,包括以前使用 C - H 胺化方法无法获得的胺。温和的反应条件和良好的官能团相容性证明了其在合成重要且复杂的胺类方面的巨大潜力。
Selective Catalytic Hydrodefluorination as a Key Step for the Synthesis of Hitherto Inaccessible Aminopyridine Derivatives
nucleophilic substitution of (oligo)fluoropyridines with the appropriate amines and the subsequent catalytichydrodefluorination paves the way to hithertoinaccessibleaminopyridinederivatives, which are of interest as new ligands. Up to four fluorine atoms can be removed regioselectively in one step in a reaction employing an inexpensive titanium precatalyst.