Palladium(II)-Catalyzed Decarboxylative Heck Arylations of Acyclic Electron-Rich Olefins with Internal Selectivity
作者:Ashkan Fardost、Jonas Lindh、Per J. R. Sjöberg、Mats Larhed
DOI:10.1002/adsc.201301004
日期:2014.3.10
electron‐rich olefins are still lacking. We herein report on palladium(II)‐catalyzed decarboxylative Heck arylations of linear electron‐rich olefins with excellent selectivity for the internal position. The method allows a variety of electron‐rich linear olefins to undergo arylation with ortho‐functionalized aromatic carboxylic acids, including heterocycles. The reaction mechanism has been explored with ESI‐MS
尽管最近出现了脱羧CC键形成反应,但仍缺乏提供内部芳基化电子富集烯烃的方法。我们在此报告了线性(P2)催化的线性富电子烯烃的脱羧化Heck芳基化,其内部位置具有出色的选择性。该方法可使各种富电子的直链烯烃与包括杂环在内的邻官能化芳族羧酸进行芳基化。已通过ESI-MS研究探索了反应机理,以确认先前的发现,并揭示由于Heck产物与催化剂反应而形成的高度稳定的钯络合物。