[(2-mesitylindenyl)dicyclohexyl-phosphine]PdCl2 (2) have been synthesized and fully characterized by NMR and elemental analysis, as well as by X-ray crystallography for 2. A Highly active catalyst system derived from a palladium precatalyst and bulky 2-mesitylindenyl phosphine ligand (1) for the Buchwald–Hartwig amination reaction of arylhalides with primary and secondaryamines has been developed. This method
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