(E)-N-(Silyl)vinylcarbazole has been easily prepared via a new catalytic route, silylative coupling (SC) of vinylcarbazole with vinyltrisubstituted silanes catalyzed by [RuH(Cl)(CO)(PCy3)(2)]. X-ray structures of two silylvinylcarbazoles as first N-vinylcarbazole derivatives have been resolved. The Pd-catalyzed Hiyama coupling reaction (also as the tandem reaction with SC) of synthesized (E)N-(triethoxysilyl)vinylcarbazole with iodobenzene has been performed to afford (E)-N-(phenylvinyl)carbazole with high yield and stereoselectivity.
通过一种新型催化剂途径(silylative偶联), (E)-N-(Silyl)vinylcarbazole被容易制备。该偶联反应由鲁西配位化合物[RuH(Cl)(CO)(PCy3)(2)]催化的二元组
乙烯与三元组
硅烷的silylative偶联反应制备。二元组硝基NC-vinylcarbazole和一元组石英基NC-vinylcarbazole两种硝基NC-vinylcarbazole的crystal结构已被精确测定。通过二元组硝基NC-vinylcarbazole制备的(E)-N-(triethoxysilyl)vinylcarbazole,随后对该中间化合物进行
碘苯的Hiyama亲电取代反应(作为偶联反应配合物的联合作用状况)。在此催化体系下,所合成的(E)-N-(triethoxysilyl)vinylcarbazole与
碘苯在Pdstartswith催化下协同反应,开环反应得到(E)-N-(phenylvinyl)carbazole,产率高达77.5%且高度保留立体选择性。