Palladium-Catalyzed Cross-Coupling of 1-Aminoazoles with Aryl Chlorides: Application to the Synthesis of Unsymmetrical<i>N,N′</i>-Diaryl-1-aminoindoles
作者:Etienne Brachet、Samir Messaoudi、Jean-François Peyrat、Jean-Daniel Brion、Mouad Alami
DOI:10.1002/adsc.201200440
日期:2012.10.8
This process based on the use of tris(dibenzylideneacetone)dipalladium associated to Xphos as the catalyst system is general, and allows the coupling to proceed, for the first time, with a variety of cheaper and less reactive aryl chlorides. The sequential combination of selective monoarylation using aryl chlorides and a second N-arylation reaction using (hetero)aryl bromides and iodides proved to be
描述了一种用于1-氨基唑的选择性单-N-芳基化以高产率提供一系列N-芳基-1-氨基唑的有效方法。这种基于使用与Xphos缔合的三(二亚苄基丙酮)二钯作为催化剂体系的方法是通用的,并且首次使该方法与各种廉价和反应性较低的芳基氯化物进行了偶联。使用芳基氯化物的选择性单芳基化和使用(杂)芳基溴化物和碘化物的第二个N-芳基化反应的顺序组合被证明对于以高收率快速构建不对称的N,N'-二芳基-1-氨基吲哚是有用的。