TMEDA-Assisted Effective Direct Ortho Arylation of Electron-Deficient <i>N</i>-Heteroarenes with Aromatic Grignard Reagents
作者:Fang-Fang Zhuo、Wen-Wen Xie、Yong-Xin Yang、Lei Zhang、Pei Wang、Rui Yuan、Chao-Shan Da
DOI:10.1021/jo400152f
日期:2013.4.5
the addition of TMEDA in toluene, aryl Grignards could effectively and site-specifically ortho-arylate electron-deficient heteroarenes under mild conditions. This endeavor successfully changed the old low-yielding reaction, aryl Grignard addition to N-heteroarenes, into an efficient procedure for heterobiaryls. The combination of the inexpensive aryl Grignards, TMEDA, the cost-free air, no use of any
除了在甲苯中添加TMEDA外,芳基格氏试剂在温和的条件下也可以有效地和位点特异性地芳构化芳基电子缺陷型杂芳烃。该努力成功地将旧的低产率反应,即芳基格利雅(Nr。杂芳烃)加成N-杂芳烃,转变成一种有效的杂二芳基合成方法。廉价的芳基格氏试剂,TMEDA,无成本的空气,不使用任何过渡金属催化剂,温和的反应条件以及高产率的克级结果相结合,使这一新方法具有成本效益,并且有潜在的发展潜力可在工业中使用。