Palladium-Catalyzed Carbonylation and Coupling Reactions of Aryl Chlorides and Amines
作者:Robert J. Perry、B. David Wilson
DOI:10.1021/jo960861j
日期:1996.1.1
The palladium-catalyzed amidation of electron-deficient aryl chlorides proceeds readily in the presence of low CO pressures and a slight excess of an iodide salt. The rates of amidation are accelerated over those without added salt, and iodide is preferred over bromide or chloride. More electron-rich aryl chlorides were not effectively amidated, either with or without added iodide. We postulate that
缺电子的芳基氯化物的钯催化酰胺化反应在低CO压力和略微过量的碘化物盐存在下容易进行。与不加盐的酰胺化反应相比,酰胺化反应的速度加快了,碘化物比溴化物或氯化物更可取。在添加或不添加碘化物的情况下,更多的富电子芳基氯化物均无法有效酰胺化。我们假设,中间阴离子碘化钯(0)络合物是增强反应性的原因。