Practical Iron- and Cobalt-Catalyzed Cross-Coupling Reactions between N-Heterocyclic Halides and Aryl or Heteroaryl Magnesium Reagents
作者:Olesya M. Kuzmina、Andreas K. Steib、Sarah Fernandez、Willy Boudot、John T. Markiewicz、Paul Knochel
DOI:10.1002/chem.201500747
日期:2015.5.26
The reaction scope of iron‐ and cobalt‐catalyzed cross‐coupling reactions in the presence of isoquinoline (quinoline) in the solvent mixture tBuOMe/THF has been further investigated. Various 2‐halogenated pyridine, pyrimidine, and triazine derivatives were arylated under these mild conditions in excellent yields. The presence of isoquinoline allows us to perform Fe‐catalyzed cross‐coupling reactions
在溶剂混合物t BuOMe / THF中,在异喹啉(喹啉)存在下,铁和钴催化的交叉偶联反应的反应范围得到了进一步研究。在这种温和条件下,各种2-卤代吡啶,嘧啶和三嗪衍生物可以芳基化,收率很高。异喹啉的存在使我们能够在6氯喹啉和芳基镁试剂之间进行铁催化的交叉偶联反应。此外,还发现使用10%N,N-二甲基喹啉-8-胺可提高某些带有带吸电子取代基的氯吡啶的共催化交叉偶联反应的产率。