Synthesis of 1,2-Disubstituted Cyclopentadienes from Alkynes Using a Catalytic Haloallylation/Cross-Coupling/Metathesis Relay
作者:Nikola Topolovčan、Illia Panov、Martin Kotora
DOI:10.1021/acs.orglett.6b01682
日期:2016.8.5
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。