首页> 外文期刊>Chemistry: A European journal >Cross-Coupling of Organolithium with Ethers or Aryl Ammonium Salts by C-O or C-N Bond Cleavage
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Cross-Coupling of Organolithium with Ethers or Aryl Ammonium Salts by C-O or C-N Bond Cleavage

机译:通过C-O或C-N键裂解将有机锂与醚或芳基铵盐交叉偶联

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摘要

Various aryl-, alkenyl-, and/or alkyllithium species reacted smoothly with aryl and/or benzyl ethers with cleavage of the inert C-O bond to afford cross-coupled products, catalyzed by commercially available [Ni(cod)(2)] (cod=1,5-cyclooctadiene) catalysts with N-heterocyclic carbene (NHC) ligands. Furthermore, the coupling reaction between the aryllithium compounds and aryl ammonium salts proceeded under mild conditions with C-N bond cleavage in the presence of a [Pd(PPh3)(2)Cl-2] catalyst. These methods enable selective sequential functionalizations of arenes having both C-N and C-O bonds in one pot.
机译:各种芳基,烯基和/或烷基锂物质与芳基和/或苄基醚平稳反应,并通过惰性CO键的裂解得到交叉偶联的产物,并通过市售的[Ni(cod)(2)]催化具有N-杂环卡宾(NHC)配体的1,5-环辛二烯)催化剂。此外,芳基锂化合物和芳基铵盐之间的偶联反应在[Pd(PPh3)(2)Cl-2]催化剂存在下,在温和条件下进行C-N键断裂。这些方法使得在一个罐中具有C-N和C-O键的芳烃的选择性顺序官能化成为可能。

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