Method of forming a trisubstituted ethylene compound, the method comprising: (A) providing a trisubstituted ethylene compound bearing a first, a second and a third substituent, in which the first and the second substituent are bound to the one olefinic carbon atom and are different from one another; (B) providing a monosubstituted ethylene compound or a disubstituted ethylene compound in which the substituents are vicinally bound to the olefinic carbon atoms, bearing at least a fourth substituent, respectively; (C) subjecting the trisubstituted ethylene compound provided in step (A) to a cross-metathesis reaction with olefin provided in step (B) to form said trisubstituted ethylene, wherein the cross-metathesis reaction is catalysed by a transition metal complex bearing ligands from which one ligand is a carbene ligand, wherein the carbene complex is characterized by a M=C moiety, wherein M is the transition metal; and wherein the reaction proceeds stereoselectively.
形成三取代
乙烯化合物的方法,该方法包括:(A)提供一个带有第一、第二和第三取代基的三取代
乙烯化合物,其中第一和第二取代基结合在一个烯烃碳原子上,并且彼此不同;(B)提供一个单取代基
乙烯化合物或双取代基
乙烯化合物,其中取代基与烯烃碳原子相邻结合,分别带有至少第四取代基;(C)将步骤(A)中提供的三取代
乙烯化合物与步骤(B)中提供的烯烃进行交叉烯烃交换反应,形成所述的三取代
乙烯化合物,其中交叉烯烃交换反应由一个过渡
金属配合物催化,该配合物带有
配体,其中一个
配体是卡宾
配体,其中卡宾配合物以M=C基团为特征,其中M是过渡
金属;反应具有立体选择性。