Synthesis of Internal Alkynes through the Pd-Catalyzed Coupling of Heteroaryl Halides with Terminal Alkynes
作者:Linhua Lu、Hong Yan、Peng Sun、Yan Zhu、Hailong Yang、Defu Liu、Guangwei Rong、Jincheng Mao
DOI:10.1002/ejoc.201201689
日期:2013.3
Sonogashira-type cross-couplings of functionalized heterocyclic halides with terminal alkynes were performed efficiently at room temperature. The heteroaryl halides were easily prepared from the corresponding heterocyclic compounds. The catalytic system tolerated a very broad scope of substrates; oxazoles, thiazoles, and furans participate in this type of reaction for the first time. This reaction
功能化杂环卤化物与末端炔烃的 Sonogashira 型交叉偶联在室温下有效地进行。杂芳基卤化物很容易由相应的杂环化合物制备。催化系统可耐受的底物范围非常广泛;恶唑、噻唑和呋喃首次参与此类反应。该反应为杂环的直接官能化提供了一种有效的方法。