Gold and Palladium Combined for the Sonogashira Coupling of Aryl and Heteroaryl Halides
作者:Tarun Sarkar、Biswajit Panda
DOI:10.1055/s-0032-1318119
日期:——
transmetalation step. A highly efficient gold and palladium combined methodology for the Sonogashira coupling of a wide array of electronically and structurally diverse aryl and heteroaryl halides is described. The orthogonal reactivity of the two metals shows high selectivity and extreme functional group tolerance in Sonogashira coupling. A brief mechanistic study reveals that the gold acetylide intermediate enters
摘要 描述了一种Sonogashira偶联的高效金和钯组合方法,该偶联用于各种电子和结构上不同的芳基和杂芳基卤化物。两种金属的正交反应性在Sonogashira偶联中显示出高选择性和极高的官能团耐受性。简要的机理研究表明,乙炔金中间体在过渡金属化步骤进入钯催化循环。 描述了一种Sonogashira偶联的高效金和钯组合方法,该偶联用于各种电子和结构上不同的芳基和杂芳基卤化物。两种金属的正交反应性在Sonogashira偶联中显示出高选择性和极高的官能团耐受性。简要的机理研究表明,乙炔金中间体在过渡金属化步骤进入钯催化循环。