Reaction of cyclopropylcarbene–metal complexes with nucleophiles, halogens and HX
作者:Margaret D. Reid、Liz Tirado、Jianwei Zhang、Nwamara Dike、James W. Herndon
DOI:10.1016/j.jorganchem.2005.07.044
日期:2005.12
The reaction of halogens, pseudohalogens, and HX with cyclopropyl(phenylthio)carbene-chromium complexes leads to the formation of 1,4-dihalo-1-thiophenyl-1-butene systems with a moderate-high degree of stereocontrol in the formation of the alkene. A mechanism involving electrophilic activation of the carbene complex followed by nucleophilic attack at the cyclopropane carbon has been proposed.
卤素,拟卤素和HX与环丙基(苯硫基)卡宾-铬络合物的反应导致形成1,4-二卤-1-硫代苯基-1-丁烯体系,并在形成过程中具有中等程度的立体控制烯烃。已经提出了一种机制,该机制涉及卡宾配合物的亲电子活化,然后在环丙烷碳上发生亲核攻击。