Nano copper and cobalt ferrites as heterogeneous catalysts for the one-pot synthesis of 2,4,5-tri substituted imidazoles

Sanasi, Paul Douglas; Santhipriya, D.; Nagarkar, Raj; Kumar, M. Ravi; Swathi, B; Rao, K. Jaya

doi:10.1007/s12039-014-0729-2

Cited by 24 publications

(11 citation statements)

References 27 publications

(11 reference statements)

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“…The fresh substrate dissolved in the same solvent was introduced into the flask, allowing the reaction to proceed for the next run.The catalyst was consecutively reused five times without any noticeable loss of its catalytic activity. These catalysts are highly magnetic and their saturation magnetization values [46] are much higher than other reported magnetic catalysts. Therefore, they could be easily and almost completely separated by an external magnet which is of a great advantage for a heterogeneous catalyst.…”

Section: Recycling Of the Catalystmentioning

confidence: 76%

“…The spinel nano copper ferrite has been synthesized by citrate sol-gel precursor method as reported earlier by us [46].…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…The catalyst has been characterized using FTIR, SEM, TEM, XRD and particle size analyzer as reported earlier [46].…”

Section: Catalyst Characterizationmentioning

confidence: 99%

“…The plausible mechanism for the synthesis of 2,4,5-tri substituted imidazoles [46] with the copper nano ferrite in the reaction may be shown in Scheme 3. Ammonia molecules are obtained from Ammonium acetate.…”

Section: Plausible Mechanism For the Formation Of Products Under Nanomentioning

confidence: 99%

“…Due to the effective activity of magnetically separable copper based nano particles [46], several organic transformations [47] are carried out with these particles and reported earlier in the literature. Along with these, nano copper ferrite has earlier been used as magnetically separable catalyst for several organic synthetic reactions such as asymmetric hydrosilylation of Ketones [48], synthesis of diaryl or aryl akyl sulfides via cross coupling process under ligand free conditions [49], synthesis of substituted benzoxazoles via Ullmann-type coupling under ligand free conditions [50], Cross-coupling of aryl halides with diphenyl diselenide [51], green one-pot three component synthesis of spirooxindoles [52], multicomponent synthesis of 1,4-di substituted 1,2,3-triazoles in tap water [53].…”

Section: Introductionmentioning

confidence: 99%

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Nano Copper Ferrite Catalyzed Sonochemical, One-Pot Three and Four Component Synthesis of Poly Substituted Imidazoles

Sanasi¹,

Majji²,

Bandaru³

et al. 2016

MRC

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A simple, multi component, one-pot method has been reported for the synthesis of poly substituted imidazoles in presence of magnetically separable and recyclable spinel nano copper ferrite as heterogeneous catalyst by the cyclo-condensation of benzil, aromatic aldehyde, ammonium acetate and substituted amines under ultrasonic irradiation. This method of preparation has many advantages compared to those methods which are previously reported in the literature. This methodology offers simple experimental procedure, milder reaction conditions and environmentally benign approach.

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Section: Recycling Of the Catalystmentioning

confidence: 76%

“…The spinel nano copper ferrite has been synthesized by citrate sol-gel precursor method as reported earlier by us [46].…”

Section: Catalyst Preparationmentioning

confidence: 99%

“…The catalyst has been characterized using FTIR, SEM, TEM, XRD and particle size analyzer as reported earlier [46].…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Section: Plausible Mechanism For the Formation Of Products Under Nanomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Nano Copper Ferrite Catalyzed Sonochemical, One-Pot Three and Four Component Synthesis of Poly Substituted Imidazoles

Sanasi¹,

Majji²,

Bandaru³

et al. 2016

MRC

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Catalytic Synthesis of 1,2,4,5‐Tetrasubstituted 1H‐Imidazole Derivatives: State of the Art

et al. 2019

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1,2,4,5-Tetrasubstituted-1H-imidazoles are a large family of heteroarene derivatives that are known to include natural products isolated from marine sponges and synthetic compounds possessing a broad range of biological and pharmacological properties. Consequently, a great deal of attention has been given to the synthesis of these heteroarenes and reviews covering some synthetic aspects of this topic have been published in recent years. However, none of these reviews provides a comprehensive overview of the several catalytic methods developed in the literature for the preparation of this important class of heteroarenes. This article review with 469 references, 63% of them being related to the period 2010-2017, aims to provide an updated critical picture of the catalytic processes reported in the literature up to the end of 2017 for the synthesis of 1,2,4,5-tetrasubstituted-1H-imidazoles illustrating these protocols and their characteristic features such as scope, efficiency, versatility, and limitations. The review also summarizes the mechanisms of the catalytic processes proposed for many of the reported processes.

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ChemInform Abstract: Nano Copper and Cobalt Ferrites as Heterogeneous Catalysts for the One‐Pot Synthesis of 2,4,5‐Tri Substituted Imidazoles.

et al. 2015

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Nano Copper and Cobalt Ferrites as Heterogeneous Catalysts for the One-PotSynthesis of 2,4,5-Tri Substituted Imidazoles. -A simple one-pot synthesis is presented for the synthesis of trisubstituted imidazoles using magnetic recyclable spinel nano copper and cobalt ferrites by the condensation of benzil, different aromatic aldehydes, and ammonium acetate in ethanol. The reaction is carried out under mild conditions with high yields. The catalyst can be easily recycled and reused, which makes this methodology environmentally benign. -(SANASI*, P. D.; SANTHIPRIYA, D.; RAMESH, Y.; KUMAR, M. R.; SWATHI, B.; RAO, K. J.;

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Nano copper and cobalt ferrites as heterogeneous catalysts for the one-pot synthesis of 2,4,5-tri substituted imidazoles

Cited by 24 publications

References 27 publications

Nano Copper Ferrite Catalyzed Sonochemical, One-Pot Three and Four Component Synthesis of Poly Substituted Imidazoles

Nano Copper Ferrite Catalyzed Sonochemical, One-Pot Three and Four Component Synthesis of Poly Substituted Imidazoles

Catalytic Synthesis of 1,2,4,5‐Tetrasubstituted 1H‐Imidazole Derivatives: State of the Art

ChemInform Abstract: Nano Copper and Cobalt Ferrites as Heterogeneous Catalysts for the One‐Pot Synthesis of 2,4,5‐Tri Substituted Imidazoles.

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