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。
Structure and Reactivity of Boron-Ate Complexes Derived from Primary and Secondary Boronic Esters
作者:Kathryn Feeney、Guillaume Berionni、Herbert Mayr、Varinder K. Aggarwal
DOI:10.1021/acs.orglett.5b00918
日期:2015.6.5
Boron-ate complexesderivedfrom primary and secondary boronicesters and aryllithiums have been isolated, and the kinetics of their reactions with carbenium ions studied. The second-order rate constants have been used to derivenucleophilicity parameters for the boron-ate complexes, revealing that nucleophilicity increased with (i) electron-donating aromatics on boron, (ii) neopentyl glycol over pinacol
Freund; Mayer,F., Chemische Berichte, 1906, vol. 39, p. 1118
作者:Freund、Mayer,F.
DOI:——
日期:——
Barluenga, Jose; Campos, Pedro J.; Roy, Miguel A., Journal of the Chemical Society. Perkin transactions I, 1980, p. 1420 - 1426
作者:Barluenga, Jose、Campos, Pedro J.、Roy, Miguel A.、Asensio, Gregorio
DOI:——
日期:——
Efficient Synthesis of Bis(4-Dimethaminophenyl)arylmethanes and Bis(4-Diamethaminophenyl)alkanes Using Iodine Reagent
作者:Harshal M. Bachhav、Balaram S. Takale、Vikas N. Telvekar
DOI:10.1080/00397911.2012.680569
日期:2013.7.18
A novel synthetic utility of NaICl2 for the preparation of bis(4-dimethaminophenyl)arylmethanes and bis(4-dimethaminophenyl)alkanes is described. In the presence of an aqueous solution of NaICl2, the reaction of arenes with aromatic aldehydes gives corresponding triarylmethane derivatives regioselectively in moderate to good yields. The method is also useful for the preparation of diarylalkane derivatives by using aliphatic aldehydes. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications((R)) to view the free supplemental file.