Conducting Polyaniline is an Efficient Catalyst for Synthesis of 3,4-dihydropyrimidin-2-(1H)-one Derivative Under Solvent-Free Conditions

Chabukswar, Vasant V.; Handore, Kalpana; Bhavsar, Sanjay V.; Horne, Amit; Dallavalle, Sabrina; Gaikwad, V. B.; Mohite, K. C.

doi:10.1080/10601325.2013.768157

Cited by 10 publications

(5 citation statements)

References 26 publications

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“…The solvent-free model Biginelli reaction was performed using PANI nanoparticles as a catalyst under sonication and afforded excellent yield of DHPM. The recyclability of catalyst was mentioned with slight decline in activity after each consecutive run . The article described here the catalytic activity of PANI nanoparticles (Table ) for the Biginelli reaction with respect to optimization of suitable conditions, but the synthesis of diverse library of the Biginelli scaffolds found missing.…”

Section: Nanocatalystsmentioning

confidence: 99%

Biginelli Reaction: Polymer Supported Catalytic Approaches

et al. 2019

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The Biginelli product, dihydropyrimidinone (DHPM) core, and its derivatives are of immense biological importance. There are several methods reported as modifications to the original Biginelli reaction. Among them, many involve the use of different catalysts. Also, among the advancements that have been made to the Biginelli reaction, improvements in product yields, less hazardous reaction conditions, and simplified isolation of products from the reaction predominate. Recently, solid-phase synthetic protocols have attracted the research community for improved yields, simplified product purification, recyclability of the solid support, which forms a special economic approach for Biginelli reaction. The present Review highlights the role of polymer-supported catalysts in Biginelli reaction, which may involve organic, inorganic, or hybrid polymers as support for catalysts. A few of the schemes involve magnetically recoverable catalysts where work up provides green approach relative to traditional methods. Some research groups used polymer−catalyst nanocomposites and polymer-supported ionic liquids as catalyst. Solvent-free, an ultrasound or microwave-assisted Biginelli reactions with polymer-supported catalysts are also reported.

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Section: Nanocatalystsmentioning

confidence: 99%

Biginelli Reaction: Polymer Supported Catalytic Approaches

et al. 2019

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“…A number of different metal oxide particles have so far been encapsulated into the shell of polyaniline giving rise to a host of nanocomposites. Various reusable conducting polymeric material are used as a catalyst such as polyaniline [9] and polyaniline nanocomposite for electrochemical water splitting and dyes degradation [10]. Polyindole and nanocomposite shows best catalytic, antibacterial activity [12][13][14][15][16][17] and anticorrosive properties [18][19].…”

Section: Introductionmentioning

confidence: 99%

Polyaniline Decorated TiO2 nanocomposite as Efficient Catalyst for Ultrasound Synthesis of Dihydropyrimidinones.

Handore,

Chabukswar,

Jagtap

2023

Preprint

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The paper describes the synthesis of conducting polyaniline - TiO2 nanocomposite by using chemical oxidative polymerization method using aniline as a monomer. TiO2 nanoparticles were synthesized by sol gel method using TiCl4 and ethanol. Synthesized TiO2 nanoparticles and nanocomposite were characterized by various spectroscopic techniques UV, FT-IR, XRD, SEM and TGA. The XRD pattern confirms the appearance of sharp diffraction patterns indicates the small size with high purity TiO2 nano particles are highly agglomerated with spherical morphology. The polyaniline-TiO2 nanocomposite was employed as a promising heterocyclic, reusable catalyst for most of the organic synthesis. Nanocomposite of polyaniline -TiO2 is an efficient, solvent free, ultrasound assisted synthesis of biologically active dihydropyrimidin-2(1H)-one/thiones (DHPM) derivatives. The advantages of this methodology are mild reaction conditions with short reaction time, excellent yields, low loading and reusability of catalyst.

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“…Synthesized composites were used as a catalyst for the one-pot multicomponent synthesis of dihydropyrimidinones. Due to the insolubility of polyindole-ZnO nanocomposites, they can be easily separated from the reaction mixture and reused several times without loss in catalytic activity [29] . Polyindole-ZnO nanoparticles show enhanced catalytic properties as compared to pure polyindole due to its large surface area.…”

Section: Introductionmentioning

confidence: 99%

Polyindole-ZnO Nanocomposite: Synthesis, Characterization and Heterogeneous Catalyst for the 3,4-Dihydropyrimidinone Synthesis under Solvent-free Conditions

Kalpana

Sanjay

Pande

et al. 2014

Polymer-Plastics Technology and Engineering

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A Polyindole-ZnO nanocomposite particle was synthesized by using a chemical oxidative polymerization method. Synthesized nanocomposite was characterized by UV-Visible, FTIR, SEM, XRD, EDAX and electrical conductivity measurements. The band at $3400 cm À1 and 735 cm À1 in FTIR spectra confirmed the polyindole formation. XRD spectral studies exhibits major diffraction in between 30-40 (2h) indicates the partial crystalline nature of the polyindole-ZnO nanocomposite. SEM image reveals agglomerated granular particulate nature with ZnO embedded in the polyindole matrix. The application of Polyindole-ZnO nanocomposite as a polymer-supported catalyst was studied for the synthesis of one pot multicomponent Biginelli condensation.

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Conducting Polyaniline is an Efficient Catalyst for Synthesis of 3,4-dihydropyrimidin-2-(1H)-one Derivative Under Solvent-Free Conditions

Cited by 10 publications

References 26 publications

Biginelli Reaction: Polymer Supported Catalytic Approaches

Biginelli Reaction: Polymer Supported Catalytic Approaches

Polyaniline Decorated TiO2 nanocomposite as Efficient Catalyst for Ultrasound Synthesis of Dihydropyrimidinones.

Polyindole-ZnO Nanocomposite: Synthesis, Characterization and Heterogeneous Catalyst for the 3,4-Dihydropyrimidinone Synthesis under Solvent-free Conditions

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