demonstrating the important influence of metal-bound ligand groups on the efficiency and selectivity of palladium complex catalyzed allylic coupling reactions are described. Emphasis is placed on the unique role of electron-withdrawing olefinic co-catalysts in increasing the coupling rates and inducing novel stereo-retentive nucleophilic substitution. The possible origin of such behavior is discussed
描述了表明
金属结合的
配体基团对
钯络合物催化的烯丙基偶联反应的效率和选择性的重要影响的结果。重点放在吸电子的烯烃助催化剂在提高偶联速率和诱导新的立体保持亲核取代中的独特作用。在详细了解构成催化循环的各个步骤的机理的基础上,讨论了这种行为的可能起源,即,对含有烯丙基和烯烃
配体的
钯和
铂配合物进行氧化加成和还原消除。