Palladium‐Catalyzed
<i>para</i>
‐C−H Arylation of Anilines with Aromatic Halides
作者:Dominik Lichte、Nico Pirkl、Gregor Heinrich、Sayan Dutta、Jonas F. Goebel、Debasis Koley、Lukas J. Gooßen
DOI:10.1002/anie.202210009
日期:2022.11.21
arylation of anilines with non-activated aryl halides has been achieved by a metalla-tautomerism approach. The reactivity of an aniline towards a palladium catalyst was relayed from the NH group into the aromatic ring. Out of four possible positions, the catalytic arylation was directed exclusively into the para-C−H position by a bulky ligand at the palladium in combination with a temporarily installed shielding
通过金属互变异构方法实现了苯胺与非活化芳基卤化物的选择性对-C-H芳基化。苯胺对钯催化剂的反应性从 NH 基团转移到芳环中。在四个可能的位置中,催化芳基化通过钯上的大配体与临时安装的屏蔽基团的组合专门定向到对位-C-H位置。