A Highly Versatile Catalyst System for the Cross-Coupling of Aryl Chlorides and Amines
作者:Rylan J. Lundgren、Antonia Sappong-Kumankumah、Mark Stradiotto
DOI:10.1002/chem.200902316
日期:2010.2.8
air‐stable P,N ligands enable the cross‐coupling of aryl and heteroaryl chlorides, including those bearing as substituents enolizable ketones, ethers, esters, carboxylic acids, phenols, alcohols, olefins, amides, and halogens, to a diverse range of amine and related substrates that includes primary alkyl‐ and arylamines, cyclic and acyclic secondary amines, NH imines, hydrazones, lithium amide, and ammonia
2-(二-的合成叔- -butylphosphino)ñ,Ñ二甲基苯胺(L1,71%)和2-(二-1- adamantylphosphino) - ñ,Ñ二甲基苯胺(L2,74%),和它们的应用据报道在布赫瓦尔德-哈特维格胺的胺化反应。与[Pd(烯丙基)Cl] 2或[Pd(肉桂基)Cl] 2组合,这些结构简单且稳定的P,N配体可实现芳基和杂芳基氯化物的交叉偶联,包括带有可取代的酮,醚,酯,羧酸,酚,醇,烯烃,酰胺和卤素的取代基。胺和相关的基板的一个不同的范围,其包括初级烷基-和芳基胺,环状和非环状仲胺,N ħ亚胺,腙,氨基锂,和氨。在许多情况下,反应可以在低催化剂负载量(0.5–0.02 mol%Pd)下进行,且具有出色的官能团耐受性和化学选择性。还报道了涉及1,4-溴氯苯和碘苯的交叉偶联反应的例子。在相似的条件下,使用Pd(OAc)2可获得较差的催化性能,PdCl 2,[PdCl 2(cod)](cod