类型的芳基官能化吡啶胺2- i PrC 6 H 4 N(H)py(1)和双(2-吡啶基)胺ArN(py)2 为了 氩气= Mes(2),2,6-Et 2 C 6 H 3(3),2- i PrC 6 H 4(4),2,6- i Pr 2 C 6 H 3(5)和1-萘酚(6),已经准备好了钯催化的苯胺与苯胺的交叉偶联 2-溴吡啶,并已通过1 H和13 C NMR NMR,FTIR,MS和TGA进行了表征。这些新的N-芳基二配合物(2-吡啶基)胺已为酸盐[H {ARN(PY)制备2 }] BF 4,其中氩气= Mes(7)和2- i PrC 6 H 4(8),以及二聚体桥接复合物[Cu {ArN(py)2 }(μ-X)(Y)] 2 X /ÿ = 氯-和氩气= Ph(9),2- i PrC 6 H 4(10)和1-萘酚(11),除了X =哦−,ÿ= H 2 O和氩气=梅斯(12)。的烯烃配合物[铜(AR-DPA)(苯乙烯)]
Efficient catalytic aryl amination of bromoarenes using 3-iminophosphine palladium(II) chloride
作者:Danielle C. Samblanet、Joseph A.R. Schmidt
DOI:10.1016/j.jorganchem.2012.08.027
日期:2012.12
While pursuing the development of new hydroamination catalysts, a 3-iminophosphine palladium(II) chloride complex [(3IP)PdCl2] was synthesized that has subsequently proven to be an effective precatalyst for the aryl amination of bromoarenes. This (3IP)PdCl2 complex has been utilized in the catalytic aryl amination of both bromobenzene and bromopyridine derivatives, specifically yielding excellent activity in coupling reactions involving bromobenzene, 4-bromotoluene, and 2-bromopyridine. Using a standard set of catalytic conditions, many alkyl and aryl amines have been investigated as coupling partners in the aryl amination of bromoarenes. In general, secondary alkyl amines and ortho-substituted anilines proved to be the best substrates for this reaction, commonly giving quantitative conversion to products, while primary amines and other anilines gave only poor to moderate results. Catalytic screening data, product yields, and full characterization of isolated products are included. (C) 2012 Elsevier B.V. All rights reserved.