From vinyl sulfides, sulfoxides and sulfones to vinyl zirconocene derivatives
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