Friedel−Crafts Arylation Reactions of N-Sulfonyl Aldimines or Sulfonamidesulfones with Electron-Rich Arenes Catalyzed by FeCl3·6H2O: Synthesis of Triarylmethanes and Bis-heteroarylarylmethanes
摘要:
The FeCl3 center dot 6H(2)O-catalyzed Friedel-Crafts arylation reactions of N-sulfonyl aldimines or sulfonamidesulfones with electron-rich arenes and heteroarenes, which lead to the formation of triarylmethanes and bis-heteroarylarylmethanes, are developed. The use of mild reaction conditions, low catalytic loading, high yield, and single step synthesis are the advantages of the present procedure.
A beneficial, scalable and efficient methodology for the synthesis of aniline-based triarylmethanes has been established through the double Friedel-Crafts reaction of commercial aldehydes and primary, secondary or tertiary anilines using Brönstedacidicionicliquid as a powerful catalyst, namely [bsmim][NTf2]. This protocol was successfully performed under metal- and solvent-free conditions with a
An efficient and practical synthesis of triaryl and trisindolylmethanes is reported via the bisarylation of aryl aldehydes with activated arenes. The new method features mild solvent-free reaction conditions, in most cases nearly stoichiometric reagent ratios, catalytic amount of the readily available, easily-handled, recoverable and reusable Brønsted acid catalyst o-benzenedisulfonimide.
Efficient synthesis of triarylmethanes via bisarylation of aryl aldehydes with arenes catalyzed by silica gel-supported sodium hydrogen sulfate
作者:Yixin Leng、Fang Chen、Li Zuo、Wenhu Duan
DOI:10.1016/j.tetlet.2010.02.157
日期:2010.4
An efficient synthesis of triarylmethanes has been developed via bisarylation of aryl aldehydes with arenes catalyzed by silicagel-supportedsodiumhydrogensulfate in a solvent-free system. The new method features high yield, mild reaction conditions, and environmental friendliness.
Brönsted acid ionic liquids catalyzed Friedel–Crafts Alkylations of electron-rich arenes with aldehydes
作者:Ailing Wang、Xueliang Zheng、Zhuangzhi Zhao、Changping Li、Yingna Cui、Xuefang Zheng、Jingmei Yin、Guang Yang
DOI:10.1016/j.apcata.2014.05.014
日期:2014.7
including Brönsted acid ionic liquids (BAILs) and traditional ionic liquids were designed and synthesized. BAILs catalyzed Friedel–Crafts (F–C) alkylation was applied in this specific reaction for the first time. And the BAILs showed bifunctional properties acting as catalyst and solvent. Research shows that BAILs can be used for catalyzing F–C alkylations of electron-rich arenes with aromatic or aliphatic
Friedel−Crafts Arylation Reactions of <i>N</i>-Sulfonyl Aldimines or Sulfonamidesulfones with Electron-Rich Arenes Catalyzed by FeCl<sub>3</sub>·6H<sub>2</sub>O: Synthesis of Triarylmethanes and Bis-heteroarylarylmethanes
作者:Ponnaboina Thirupathi、Sung Soo Kim
DOI:10.1021/jo1010137
日期:2010.8.6
The FeCl3 center dot 6H(2)O-catalyzed Friedel-Crafts arylation reactions of N-sulfonyl aldimines or sulfonamidesulfones with electron-rich arenes and heteroarenes, which lead to the formation of triarylmethanes and bis-heteroarylarylmethanes, are developed. The use of mild reaction conditions, low catalytic loading, high yield, and single step synthesis are the advantages of the present procedure.