palladium bis(phosphinite) PCP pincer complexes are easily prepared and for the first time evaluated as homogeneous catalysts in α-arylation of ketone enolates. Apart from the total absence of phenyl–aryl exchange by-products and significantly low catalyst loadings, the general α-arylation protocols described in this letter feature not only a broad applicability to a range of ketones and aryl bromides
可以轻松制备两种新的对烷氧羰基化
钯双(
次膦酸酯)PCP钳形配合物,并首次将其评估为酮烯醇酸酯的α-芳基化反应中的均相催化剂。除了完全没有苯基-芳基交换副产物和极低的催化剂负载量外,这封信中描述的一般α-芳基化方案不仅具有广泛的适用范围,而且具有明显的电子和空间差异的酮和芳基
溴化物还具有广泛的应用价值。也有可能产生单二芳基化产物。