A three-step method based on Pd-catalyzed haloallylation of alkynes, Pd-catalyzed cross-coupling, and Ru-catalyzed ring-closing metathesis constitutes a new and short approach to variety of 1,2-substituted cyclopentadienes. The scope of the method is broad with respect to different substituents (alkyl, aryl, metallocenyl, and other substituents as well as their combinations are tolerated), and all
基于Pd催化的
炔烃卤代烯丙基化,Pd催化的交叉偶联和Ru催化的闭环复分解反应的三步法,构成了各种1,2取代的
环戊二烯的新方法。关于不同的取代基(容许烷基,芳基,
金属茂基和其他取代基以及它们的组合),该方法的范围很广,并且所有步骤均以合理的收率进行。作为产品用途的证明,将几种制备的
环戊二烯转化为相应的
二茂铁。