B(C
<sub>6</sub>
F
<sub>5</sub>
)
<sub>3</sub>
‐Catalyzed Tandem Friedel‐Crafts and C−H/C−O Coupling Reactions of Dialkylanilines
作者:Gaowen Zhai、Xueting Liu、Wentao Ma、Guoqiang Wang、Liu Yang、Shuhua Li、Youting Wu、Xingbang Hu
DOI:10.1002/asia.202000763
日期:2020.10
Tandem Friedel‐Crafts (FC) and C−H/C−O coupling reactions catalyzed by tris(pentafluorophenyl) borane (B(C6F5)3) were achieved without using any other additive in the absence of solvent. This process can be used for the reactions between a series of dialkylanilines and vinyl ethers with good isolated yields of bis(4‐dialkylaminophenyl) compounds. Based on combined theoretical and experimental studies
在没有溶剂的情况下,无需使用任何其他添加剂,即可实现三(五氟苯基)硼烷(B(C 6 F 5)3)催化的串联弗里德-克来福特(FC)和CH-H / C-O偶联反应。该方法可用于一系列二烷基苯胺和乙烯基醚之间的反应,分离出的双(4-二烷基氨基苯基)化合物收率良好。在理论和实验研究相结合的基础上,提出了可能的反应机理。B(C 6 F 5)3可以分别激活FC和CH / C-O偶联反应的C = C和C-O键。FC反应是缓慢的,其后是快速的CH / CH耦合。