Halogen-Free Room-Temperature Brønsted Acidic Ionic Liquid [Hmim]<sup>+</sup> HSO<sub>4</sub> <sup>−</sup> as a Recyclable Green “Dual Reagent” Catalysis for the Synthesis of Triarylmethanes (TRAM<scp>s</scp>)
halogen-free Brønstedacidicionicliquid methylimidazolium hydrogen sulfate ([Hmim]+ HSO4 −) acts as a very efficient catalyst for the one-pot, two-component Baeyer condensation of a variety of aromatic aldehydes with dimethyl or diethyl aniline at room temperature. This “green” reagent behaves as both catalyst and solvent; that is, it exhibits “dual-reagent catalysis.” The room-temperature acidicionic liquid
An efficient and convenient protocol for the synthesis of diaminotriarylmethanes
作者:Jun-Tao Hou、Jian-Wu Gao、Zhan-Hui Zhang
DOI:10.1007/s00706-011-0461-2
日期:2011.5
A novel and efficient procedure was developed for the preparation of diaminotriarylmethanes through the Baeyer condensation of aromatic aldehydes and N,N-dimethylaniline or N,N-diethylaniline in the presence of niobium chloride under solvent-free conditions. This approach offers several advantages, such as short reaction time, high yields, low cost, and mild reaction conditions.
Fischer,O.; Schmidt,C., Chemische Berichte, 1884, vol. 17, p. 1892
作者:Fischer,O.、Schmidt,C.
DOI:——
日期:——
Montmorillonite Clay Catalysis VI<sup>1</sup>: Synthesis of Triarylmethanes via Baeyer Condensation of Aromatic Aldehydes with<i>N,N</i>-Dimethylaniline Catalysed by Montmorillonite K-10
作者:Zhan-Hui Zhang、Feng Yang、Tong-Shuang Li、Cheng-Guang Fu
DOI:10.1080/00397919708007307
日期:1997.11
Triarylmethanes are synthesized in good to excellent yield via Baeyer condensation of aromatic aldehydes with N,N-dimethylaniline catalysed by montmorillonite K 10 at 100 degrees C in the absence of solvent.
Paul, Aniruddha M.; Khandekar, Amit C.; Khadilkar, Bhushan M., Journal of Chemical Research - Part S, 2003, # 3, p. 168 - 169
作者:Paul, Aniruddha M.、Khandekar, Amit C.、Khadilkar, Bhushan M.