Solvent-free multi-component synthesis of unsymmetrical bis(indolyl)alkanes with Lewis acid-surfactant-SiO<sub>2</sub> as nanocatalyst
作者:Zhiqiang Wu、Gang Wang、Zhenliang Li、Enke Feng、Yanping Liang、Haijuan Zhan、Wanyi Liu
DOI:10.1080/00397911.2021.1874016
日期:——
Abstract Herein we report the multicomponent synthesis of the bis(indolyl)methane derivatives in a ball mill. The reaction was carried out under solvent-free conditions using only the Lewis acid-surfactant-SiO2 composite nanocatalyst (LASSC) prepared in situ. The unsymmetrical bis(indolyl) methane derivatives containing nitro or fluorine substitution with a yield of 72%–92% were obtained in a short
Selective Synthesis of Bis(indolyl)methanes Under Solvent Free Condition Using Glucopyranosylamine Derived cis-Dioxo Mo(VI) Complex as an Efficient Catalyst
作者:Noorullah Baig、Ganesh M. Shelke、Anil Kumar、Ajay K. Sah
DOI:10.1007/s10562-015-1648-7
日期:2016.2
enum(VI) complex of 4,6-O-ethylidene-β-d-glucopyranosylamine derived ligand has been used as an efficient catalyst in the selective synthesis of a series of bis(indolyl)methanes (BIMs) by condensing indole derivatives with carbonyl compounds. The adopted synthetic procedure is green in nature as solvent free reactions have been carried out using naturally occurring d-glucose derived ligands. Total
A convenient and practical method for the synthesis of unsymmetrical triarylmethanes was demonstrated through a one-pot three-component double Friedel–Crafts reaction of various aliphatic, aromatic, or heteroaromatic aldehydes with N,N-dialkylanilines and indoles by using a Brønstedacidicionicliquid as the catalyst. This method was successfully applied under metal- and solvent-free conditions at
通过使用布朗斯台德酸性离子液体,各种脂肪族、芳香族或杂芳香族醛与N , N - 二烷基苯胺和吲哚的一锅三组分双傅克反应,证明了一种方便实用的合成不对称三芳基甲烷的方法作为催化剂。该方法在 80 °C 的无金属和无溶剂条件下成功应用,从广泛的底物中以中等至高产率提供了相应的不对称三芳基甲烷产物。此外,通过定量NMR分析研究了该反应的机理。
Unmodified ‘chitosan in water’ as an efficient and recyclable heterogeneous catalytic system for the synthesis of bis(indolyl)methanes
作者:Navneet Taya、Jyoti Agarwal
DOI:10.1016/j.apcata.2023.119539
日期:2024.1
and environment friendly method has been developed for the synthesis of bis(indolyl)methanes using chitosan in aqueous medium. The use of commercially available chitosan without any modifications eliminated the need of toxic metal catalysts and minimized the cost and waste generation. The optimized reaction conditions involved the use of water as solvent at reflux temperature for the model reaction between
Discovery of 3,3′-diindolylmethanes as potent antileishmanial agents
作者:Sandip B. Bharate、Jaideep B. Bharate、Shabana I. Khan、Babu L. Tekwani、Melissa R. Jacob、Ramesh Mudududdla、Rammohan R. Yadav、Baljinder Singh、P.R. Sharma、Sudip Maity、Baldev Singh、Ikhlas A. Khan、Ram A. Vishwakarma
DOI:10.1016/j.ejmech.2013.02.024
日期:2013.5
An efficient protocol for synthesis of 3,3'-diindolylmethanes using recyclable Fe-pillared interlayered clay (Fe-PILC) catalyst under aqueous medium has been developed. All synthesized 3,3'-diindolylmethanes showed promising antileishmanial activity against Leishmania donovani promastigotes as well as axenic amastigotes. Structure-activity relationship analysis revealed that nitroaryl substituted diindolylmethanes showed potent antileishmanial activity. The 4-nitrophenyl linked 3,3'-diindolylmethane 8g was found to be the most potent antileishmanial analog showing IC50 values of 7.88 and 8.37 mu M against both L donovani promastigotes and amastigotes, respectively. Further, a pharmacophore based QSAR model was established to understand the crucial molecular features of 3,3'-diindolylmethanes essential for potent antileishmanial activity. These compounds also exhibited promising antifungal activity against Cryptococcus neoformans, wherein fluorophenyl substituted 3,3'-diindolylmethanes were found to be most potent antifungal agents. Developed synthetic protocol will be useful for economical and eco-friendly synthesis of potent antileishmanial and antifungal 3,3'-diindolylmethane class of compounds. (C) 2013 Elsevier Masson SAS. All rights reserved.