Molecular Iodine: A Versatile Catalyst for the Synthesis of 4-Aryl-3-methyl-1-phenyl-1H-benzo[h]pyrazolo[3,4-b]quinoline-5,10-diones in Water

Wu, Liqiang; Yang, Limin; Yan, Fei; Yang, Chunguang; Fang, Lizhen

doi:10.5012/bkcs.2010.31.04.1051

Cited by 18 publications

(1 citation statement)

References 12 publications

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“…However, most of the reported methods require prolonged reaction time, reagents in stoichiometric amount, toxic solvents, and generate moderate yields of the product. Recently, Wu et al [7][8][9] and Khurana et al [10] reported a new route for preparation of 4-aryl-3-methyl-1-phenyl-1H-benzo[h]pyrazolo [3,4-b]quinoline-5,10-diones by the one-pot condensation reaction of 3-methyl-1-phenyl-1H-pyrazol-5-amine, 2-hydroxynaphthalene-1,4-dione and aromatic aldehydes under solvent-free conditions [7] or water as solvent [8,9].…”

Section: Introductionmentioning

confidence: 99%

PEG1000-Based Dicationic Acidic Ionic Liquid Catalyzed One-Pot Synthesis of 4-Aryl-3-Methyl-1-Phenyl-1H-Benzo[h]pyrazolo [3,4-b]quinoline-5,10-Diones via Multicomponent Reactions

et al. 2015

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A novel and green approach for efficient and rapid synthesis of 4-aryl-3-methyl-1-phenyl-1H-benzo[h]pyrazolo [3,4-b]quinoline-5,10-diones has been accomplished by the one-pot condensation reaction of aromatic aldehydes, 3-methyl-1-phenyl-1H-pyrazol-5-amine and 2-hydroxynaphthalene-1,4-dione using PEG1000-based dicationic acidic ionic liquid (PEG1000-DAIL) as a catalyst was reported. Recycling studies have shown that the PEG1000-DAIL can be readily recovered and reused several times without significant loss of activity. The key advantages are the short reaction time, high yields, simple workup, and recovered catalyst.

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Section: Introductionmentioning

confidence: 99%

PEG1000-Based Dicationic Acidic Ionic Liquid Catalyzed One-Pot Synthesis of 4-Aryl-3-Methyl-1-Phenyl-1H-Benzo[h]pyrazolo [3,4-b]quinoline-5,10-Diones via Multicomponent Reactions

et al. 2015

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Synthesis of Biologically Relevant Heterocycles in Aqueous Media

Brahmachari

2018

Asian J Org Chem

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Water, the most widely‐used solvent in Nature, has received considerable interest as an environmentally benign solvent in organic syntheses. The present account focuses on the use of water as the reaction medium under a variety of reaction conditions, including ambient temperature and pressure, heating/reflux, microwave irradiation and ultrasonication in the presence or absence of homogeneous/heterogeneous catalysts, in implementing the syntheses of a diverse range of heterocyclic scaffolds of biological significance reported during the period 2013–2017.

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Recent Developments in the Synthesis of Five‐ and Six‐Membered Heterocycles Using Molecular Iodine

Parvatkar

Parameswaran

Tilve

2012

Chemistry A European J

276

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Heterocyclic scaffolds represent the key structural subunits of many biologically active compounds. Over the last few years iodine-mediated reactions have been extensively studied due to their low cost and eco-friendliness. This Review covers advances in the field of iodine-mediated synthesis of heterocyclic compounds since 2006, especially with an emphasis on mechanisms of ring formation. In this article, syntheses of different heterocycles are classified based on the manipulation of functional groups.

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Molecular Iodine: A Versatile Catalyst for the Synthesis of 4-Aryl-3-methyl-1-phenyl-1H-benzo[h]pyrazolo[3,4-b]quinoline-5,10-diones in Water

Cited by 18 publications

References 12 publications

PEG1000-Based Dicationic Acidic Ionic Liquid Catalyzed One-Pot Synthesis of 4-Aryl-3-Methyl-1-Phenyl-1H-Benzo[h]pyrazolo [3,4-b]quinoline-5,10-Diones via Multicomponent Reactions

PEG1000-Based Dicationic Acidic Ionic Liquid Catalyzed One-Pot Synthesis of 4-Aryl-3-Methyl-1-Phenyl-1H-Benzo[h]pyrazolo [3,4-b]quinoline-5,10-Diones via Multicomponent Reactions

Synthesis of Biologically Relevant Heterocycles in Aqueous Media

Recent Developments in the Synthesis of Five‐ and Six‐Membered Heterocycles Using Molecular Iodine

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