We report the extension and optimization of the [Pd(cinnamyl)Cl]2/DalPhos catalyst system, previously found effective for the mono-α-arylation of acetone, to the mono-α-arylation of a variety of carbonyl-containing compounds with aryl halides and heteroaryl halides. Aryl methyl ketones, heteroaryl methyl ketones, propiophenones, malonates, and methoxyacetone can be α-arylated under relatively mild
我们报告了 [Pd(cinnamyl)Cl]2/DalPhos 催化剂体系的扩展和优化,以前发现对
丙酮的单-α-芳基化有效,到各种含羰基化合物的单-α-芳基化芳基卤化物和杂芳基卤化物。芳基甲基酮、杂芳基甲基酮、
苯丙酮、
丙二酸酯和甲氧基
丙酮可以在相对温和的条件下以良好的产率进行α-芳基化。我们还报告了
配体/催化剂系统对其他类别的含羰基化合物的限制。