A palladium-catalyzed cross-coupling between aryl esters and anilines is reported, enabling access to diverse amides. The reaction takes place via activation of the C–O bond by oxidative addition with a Pd–NHC complex, which enables the use of relatively non-nucleophilic anilines that otherwise require stoichiometric activation with strong bases in order to react. High yields of aromatic, aliphatic
据报道,
钯催化的芳基酯和
苯胺之间的交叉偶联,使得能够获得各种酰胺。反应是通过Pd-NHC络合物的氧化加成激活C-O键来进行的,这使得能够使用相对非亲核的
苯胺,否则需要
化学计量的活化才能使强碱发生反应。获得高产率的芳族,脂族和杂环产物。在存在和不存在催化剂的情况下评估了一系列活化酯,这表明催化方法大大增加了在不存在苛刻碱的情况下可用于酰胺键形成的亲电试剂的类型。