Journal ArticleDOI
Synthesis of 3-substituted indoles promoted by pulverization-activation method catalyzed by Bi(NO3)3·5H2O
Mohammad Mehdi Khodaei,Parvin Ghanbary,Iraj Mohammadpoor-Baltork,Hamid Reza Memarian,Ahmad Reza Khosropour,Kobra Nikoofar +5 more
TLDR
In this paper, a new, facile, efficient, "green" and chemoselective procedure for the synthesis of indole derivatives has been developed with pulverization-activation method catalyzed by Bi(NO3)3·5H2O (PAMC-Bi(NO 3)3 ·5H 2O) through grinding of indoles with aldehydes or Michael acceptors.About:
This article is published in Journal of Heterocyclic Chemistry.The article was published on 2008-03-01. It has received 37 citations till now. The article focuses on the topics: Indole test & Catalysis.read more
Citations
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An Easy and Efficient Synthesis of Bisindolylmethanes and Tetraindolylmethane Tröger's Base Catatlyzed by AgBF4
Ajam C. Shaikh,Chinpiao Chen +1 more
TL;DR: In this paper, the authors presented an efficient and efficient method for the synthesis of bisindolylmethanes with AgBF4 with high yields, which occurs efficiently under mild reaction conditions such as are applied with methoxy or furfural.
Journal ArticleDOI
Synthesis and application of modified silica sulfuric acid as a solid acid heterogeneous catalyst in Michael addition reactions
Mohammad Ali Zolfigol,Hojat Veisi,Farajollah Mohanazadeh,Alireza Sedrpoushan,Alireza Sedrpoushan +4 more
TL;DR: Modified silica sulfuric acid (MSSA) was used as a catalyst for the synthesis of 1,1,3-tri-indolyl compounds in good to excellent yield at room temperature.
Journal ArticleDOI
The combined use of cationic palladium(II) with a surfactant for the C–H functionalization of indoles and pyrroles in water
TL;DR: The utility of electrophilic palladium(II) species for C-H bond functionalization of indoles and pyrroles in water was demonstrated in this paper, where the system displayed attractive features that were reminiscent of both precious-metal catalysis and micellar catalysis.
Journal ArticleDOI
Solvent‐Free Synthesis of 4H‐Pyrido[1,2‐a]pyrimidin‐4‐ones Catalyzed by BiCl3: A Green Route to a Privileged Backbone
TL;DR: An extensive array of 4H-pyrido[1,2-a]pyrimidin-4-ones have been synthesized from commercially available 2-aminopyridines and β-oxo esters with excellent yields under solvent-free conditions.
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Highly stereoselective imidazolethiones mediated Friedel–Crafts alkylation of indole derivatives
TL;DR: The asymmetric Friedel-Crafts alkylation of indoles with α, β-unsaturated aldehydes was promoted by the novel imidazolethiones to afford the corresponding adducts in moderate to excellent yields and high enantioselectivities under mild reaction conditions as mentioned in this paper.
References
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Journal ArticleDOI
Bismuth Nitrate-Catalyzed Versatile Michael Reactions†
Neeta Srivastava,Bimal K. Banik +1 more
TL;DR: Bismuth nitrate-catalyzed versatile Michael reaction was developed to reduce the complications that characterize the current standard Michael reaction and used for facile preparation of organic compounds of widely different structures.
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Molecular iodine-catalyzed efficient and highly rapid synthesis of bis(indolyl)methanes under mild conditions
TL;DR: Highly rapid and efficient electrophilic substitution reactions of indoles with various aldehydes and ketones were carried out using I2 in CH3CN to afford the corresponding bis(indolyl)methanes in excellent yields.
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Sequential One-Pot InBr3-Catalyzed 1,4- then 1,2-Nucleophilic Addition to Enones
Marco Bandini,Pier Giorgio Cozzi,Massimo Giacomini,Paolo Melchiorre,Simona Selva,Achille Umani‐Ronchi +5 more
TL;DR: With the optimized atom-efficient protocol, several polyfunctionalized alpha-silyloxy cyanohydrins were synthesized in good to excellent yields and a notable level of simple 1,3-diastereoselection was recorded in the case of 2-cyclohexen-1-one 2c.
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Indolyl carboxylic acids by condensation of indoles with alpha-keto acids.
TL;DR: The indole derivatives 2,2-bis(3,3'-indolyl)propionic acid (1); 1,1,1,-tris(3-3-,3"-indolyls)ethane (2); and 2-2-isocaproic acid (3) were isolated from solvent extracts of indole-supplemented supernatants of Escherichia coli and corynebacteria.
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Lewis acid-catalyzed reactions in protic media. Lanthanide-catalyzed reactions of indoles with aldehydes or ketones
TL;DR: In this paper, Lanthanide triflates were found to be effective catalysts for reactions of indoles with aldehydes or ketones in aqueous solution.