Direct Observation of the Oxidative Addition of the Aryl Carbon−Oxygen Bond to a Ruthenium Complex and Consideration of the Relative Reactivity between Aryl Carbon−Oxygen and Aryl Carbon−Hydrogen Bonds
作者:Satoshi Ueno、Eiichiro Mizushima、Naoto Chatani、Fumitoshi Kakiuchi
DOI:10.1021/ja067612p
日期:2006.12.1
When RuH2(CO)(PPh3)3 was reacted with 2,2-dimethyl-1-(2-p-tolylphenyl)propan-1-one (2), the ruthenium-aryloxy complex 3 was obtained in 76% yield. The structure of this complex was determined from 1H and 31P NMR and X-ray data. Complex 3 showed the catalytic activity for the coupling of 2 with the phenylboronate 4. The 1H and 31P NMR studies of the reaction of Ru(CO)(PPh3)3 with o-aryloxy pivalophenone
当 RuH2(CO)(PPh3)3 与 2,2-二甲基-1-(2-p-tolylphenyl)propan-1-one (2) 反应时,以 76% 的产率获得了钌-芳氧基配合物 3。该复合物的结构由 1H 和 31P NMR 和 X 射线数据确定。配合物 3 显示出对 2 与苯基硼酸酯 4 偶联的催化活性。 Ru(CO)(PPh3)3 与邻芳氧基新戊苯酮反应的 1H 和 31P NMR 研究表明,CH 键断裂是一个动力学有利的过程但 CO 键断裂是一种热力学断裂。2'-甲氧基苯乙酮与乙烯基硅烷和有机硼酸酯的反应导致化学选择性 CC 键的形成。