作者:Ian C. Stewart、Benjamin K. Keitz、Kevin M. Kuhn、Renee M. Thomas、Robert H. Grubbs
DOI:10.1021/ja1029045
日期:2010.6.30
and nonproductive metathesis reactions of diethyl diallylmalonate are compared for eight different ruthenium-based catalysts. Nonproductive cross metathesis is proposed to involve a chain-carrying ruthenium methylidene. A second more-challenging substrate (dimethyl allylmethylallylmalonate) that forms a trisubstituted olefin product is used to further delineate the effect of catalyst structure on the
比较了八种不同的钌基催化剂的二烯丙基丙二酸二乙酯的生产性和非生产性复分解反应的相对 TON。非生产性交叉复分解被提议涉及带链的亚甲基钌。形成三取代烯烃产物的第二种更具挑战性的底物(二甲基烯丙基甲基烯丙基丙二酸酯)用于进一步描述催化剂结构对这些方法的相对效率的影响。提出了空间模型来解释观察到的趋势。