1-Methylimidazolium hydrogen sulfate catalyzed convenient synthesis of 2,5-dimethyl-N-substituted pyrroles under ultrasonic irradiation.
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TLDR
Ionic liquid HSO4 was found to be an efficient catalyst for the synthesis of N-substituted pyrroles through the reaction of 2,5-hexanedione with amines under ultrasonic irradiation at room temperature.About:
This article is published in Ultrasonics Sonochemistry.The article was published on 2013-09-01 and is currently open access. It has received 23 citations till now. The article focuses on the topics: Catalysis & Ionic liquid.read more
Citations
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Protic Ionic Liquids: Evolving Structure–Property Relationships and Expanding Applications
TL;DR: It is expected that the fundamental properties of PILs will continue to be explored, along with continued interest in many existing and new applications, such as in electrochemistry, organic and inorganic synthesis, and biological applications.
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Ionic liquids and ultrasound in combination: synergies and challenges
TL;DR: This work critically review the advantages and limitations of the ionic liquid/ultrasound combination in different applications in chemistry, to understand how, and in which respects, it could become an essential tool of sustainable chemistry in the future.
Journal ArticleDOI
Sonochemistry in non-conventional, green solvents or solvent-free reactions
Massimiliano Lupacchini,Massimiliano Lupacchini,Andrea Mascitti,Andrea Mascitti,Guido Giachi,Lucia Tonucci,Nicola d'Alessandro,Jean Martinez,Evelina Colacino +8 more
TL;DR: In this paper, the authors present a survey of studies that combine sonochemistry with green, non-conventional solvents or with no Solvents, evidencing how the most frequently investigated options are water phase, ionic liquids, followed by ethylene glycol and its oligomers, glycerol, and few other biomass-based solvements.
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Supercritical ethanolysis for biodiesel production from edible oil waste using ionic liquid [HMim][HSO4] as catalyst
Bárbara S. Caldas,Cátia S. Nunes,Paulo R. Souza,Fernanda A. Rosa,Jesuí Vergílio Visentainer,Oscar de Olivera S. Júnior,Edvani C. Muniz +6 more
TL;DR: In this article, the authors used supercritical ethanolysis of waste cooking soybean oil using the ionic liquid [HMim][HSO4], as catalyst, to yield ethyl esters.
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Paal–Knorr synthesis of pyrroles: from conventional to green synthesis
Avula Balakrishna,António Aguiar,Pedro J. M. Sobral,Mohmmad Younus Wani,Joana A. Silva,Abilio J.F.N. Sobral +5 more
TL;DR: The pyrrole molecular framework is found in a large number of natural and synthetic compounds of great importance as discussed by the authors, and functionalized pyrroles are essential for the progress of many branches of science.
References
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Ultrasound in synthetic organic chemistry
TL;DR: A review of sonochemistry applications in organic synthesis can be found in this paper, where ultrasound seems to provide a distinct alternative to other, more traditional, techniques of improving reaction rates and product yields.
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A Catalytic Approach to (R)‐(+)‐Muscopyridine with Integrated “Self‐Clearance”
Alois Fürstner,Andreas Leitner +1 more
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Simple Synthesis of Substituted Pyrroles
TL;DR: This method gives pyrroles with less nucleophilic multicyclic aromatic amines at room temperature using iodine-catalyzed and montmorillonite KSF-clay-induced modified Paal-Knorr methods.
Journal ArticleDOI
An approach to the Paal–Knorr pyrroles synthesis catalyzed by Sc(OTf)3 under solvent-free conditions
TL;DR: In this article, a facile synthesis of N-substituted pyrroles by Paal-Knorr condensation has been achieved using a simple procedure.
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