Synthesis of Internal Alkynes through an Effective Tandem Elimination–Hydrodebromination–Cross-Coupling of gem-Dibromoalkenes with Halobenzenes
作者:Yuan Ji、Ning Zhong、Zinan Kang、Guobing Yan、Ming Zhao
DOI:10.1055/s-0036-1590907
日期:2018.1
Carbon–carbon couplings are among the most important strategies for constructing functional molecules in organic synthetic chemistry, and cheap, diverse, and readily available coupling partners are crucial to these diverse reactions. In this contribution, we report the first palladium-catalyzed C–C cross-coupling reaction of two kinds of organic halide, a gem -dibromoalkene and a halobenzene, as the
碳-碳偶联是有机合成化学中构建功能分子的最重要策略之一,廉价、多样且易于获得的偶联伙伴对这些不同的反应至关重要。在这项贡献中,我们报告了两种有机卤化物,一种二溴代烯烃和一种卤代苯,作为起始材料的第一个钯催化的 C-C 交叉偶联反应。末端炔烃通过串联消除-加氢脱溴过程原位生成,内部炔烃最终产物在一锅中合成。该反应在简单、容易和经典的无铜 Sonogashira 偶联反应条件下进行,收率良好。