作者:Shahera Farhat、Irena Zouev、Ilan Marek
DOI:10.1016/j.tet.2003.08.074
日期:2004.2
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。