2‐Pyridyl Sulfoxide: A Versatile and Removable Directing Group for the Pd
<sup>II</sup>
‐Catalyzed Direct CH Olefination of Arenes
作者:Alfonso García‐Rubia、M. Ángeles Fernández‐Ibáñez、Ramón Gómez Arrayás、Juan Carlos Carretero
DOI:10.1002/chem.201003633
日期:2011.3.21
Removable and versatile: The 2‐pyridylsulfinyl group has proved to be an efficient directing group in the PdII‐catalyzed aryl ortho CH olefination. This catalyst system enables the sequential double olefination to give asymmetrically di‐ortho‐functionalized arenes. The sulfinyl directing group can be easily cleaved, providing access to 1,3‐disubstituted arenes, or transformed into a thiol group.
可移动的和多功能的:2-吡啶基亚硫组已被证明是在PD的有效定向基团II催化的芳基邻位Ç ħ烯。这种催化剂系统使连续双烯给不对称二邻-功能化芳烃。亚硫酰基导向基团可以很容易地裂解,从而可以接近1,3-二取代的芳烃,或者可以转化为硫醇基团。