An easy and straightforward new method for the preparation of sp2 zirconocene derivatives from a wide range of heterosubstituted alkenes such as vinyl sulfides, sulfoxides and sulfones is described. In all cases, a complete isomerization of the stereochemistry is observed and only the E-isomer is obtained. The reactivity of the resulting vinylic organometallic can be increased by a transmetalation
描述了一种容易和直接的新方法,其用于从多种杂取代的烯烃如
乙烯基硫化物,亚砜和砜制备sp 2
锆茂衍
生物。在所有情况下,观察到立体
化学的完全异构化,并且仅获得E-异构体。可以通过
金属转化反应转变为
有机铜,
有机锌或
有机钯物质,从而提高所得
乙烯基有机
金属的反应性,因此,很容易实现几种碳-碳的形成。