ST 1487;3,3’-(cyclohexylmethylene)bis(1H-indole);3,3'-(cyclohexylmethylene)bis(1H-indole);3,3′-diindolylcyclohexylmethane;1-(bis(indol-3-yl)methyl)cyclohexane;cyclohexyl-3,3'-bis(indolyl)methane
Efficient and Eco-Friendly Process for the Synthesis of Bis(1H-indol-3-yl)methanes using Ionic Liquids
作者:J. S. Yadav、B. V. S. Reddy、S. Sunitha
DOI:10.1002/adsc.200390038
日期:2003.3
compounds in 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim]BF4) or 1-butyl-3-methylimidazolium hexafluorophosphate ([bmim]PF6) ionicliquids under mild reaction conditions to afford the corresponding bis-indolylmethanes in excellent yields. These ionicliquids can be recovered and recycled in subsequent reactions without any apparent loss of activity.
In situ generation of Iron(<scp>iii</scp>) dodecyl sulfate as Lewis acid-surfactant catalyst for synthesis of bis-indolyl, tris-indolyl, Di(bis-indolyl), Tri(bis-indolyl), tetra(bis-indolyl)methanes and 3-alkylated indole compounds in water
Iron(III) dodecyl sulfate as Lewis acid-surfactant catalyst was prepared in situ and effectively used in the synthesis of bis(indolyl)methanes and Michael reactions of indoles with α,β-unsaturated carbonyl compounds in water. Also, this method was used for the synthesis of 1,1,3-tri-indolyl compounds, producing good to excellent yield at room temperature.
An Efficient Preparation of Bis(indole)methanes Catalyzed by Tetrakis[3,5-bis(trifluoromethyl)phenyl]borate Salts in Aqueous Medium
作者:Shiuh-Tzung Liu、Bei-Sih Liao、Jwu-Ting Chen
DOI:10.1055/s-2007-990788
日期:2007.10
An efficient and direct preparation of bis(indole)methanes from indole and the corresponding carbonyl compound in water catalyzed by metal salts of tetrakis[3,5-bis(trifluoromethyl)phenyl]borate has been developed.
Preparation of immobilized hexamine on Fe3O4/SiO2 core/shell nanoparticles: a novel catalyst for solvent-free synthesis of bis(indolyl)methanes
作者:Sahar Kangari、Issa Yavari
DOI:10.1007/s11164-016-2590-z
日期:2016.12
VSM. According to SEM pictures, the nanoparticles are mostly spherical in shape, and their size is approximately 46 nm. The catalytic performance of these magnetic nanoparticles for the synthesis of bis(indolyl)methanes was investigated. The catalyst was readily recycled by the use of an external magnetic field and can be reused four times without significant loss of activity. Graphical Abstract
Development of an imidazole salt catalytic system for the preparation of bis(indolyl)methanes and bis(naphthyl)methane
作者:Xu Wang、Courtney C. Aldrich
DOI:10.1371/journal.pone.0216008
日期:——
Imidazolium salts are shown to catalyze the rapid room temperature reaction of indoles or naphthol with aldehydes to provide bis(indolyl)methanes or bis(naphthol)methane in excellent yields and the reaction proceeds optimally in dichloromethane with no base additives. The reaction exhibits a broad substrate tolerance and occurs through nucleophilic activation of the indoles and naphthols through a