Ultrasound-assisted regioselective ring opening of epoxides with nitrogen heterocycles using pyrrolidonium and imidazolium-based acidic ionic liquids

Zakeri, Masoumeh; Nasef, Mohamed Mahmoud; Abouzari‐Lotf, Ebrahim; Haghi, Hoda

doi:10.1007/s11164-015-2015-4

Cited by 11 publications

(4 citation statements)

References 28 publications

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“…420−424 However, there are examples of alkylations at N, O and S atoms as well. 425,426 Acidic ionic liquid catalyzed alkylation of phenol and phenol derivatives like cresols are wellknown. 427 Alkenes or tertiary alcohols such as tbutanol are common alkylating agents used in this reaction.…”

Section: Catalysis Applicationsmentioning

confidence: 99%

“…The Friedel–Crafts type alkylation at a carbon atom is the most common application in acidic ionic liquid catalyzed alkylations. − However, there are examples of alkylations at N, O and S atoms as well. , Acidic ionic liquid catalyzed alkylation of phenol and phenol derivatives like cresols are well-known . Alkenes or tertiary alcohols such as t‑ butanol are common alkylating agents used in this reaction.…”

Section: Applications Of Acidic Ionic Liquidsmentioning

confidence: 99%

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Acidic Ionic Liquids

2016

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Ionic liquid with acidic properties is an important branch in the wide ionic liquid field and the aim of this article is to cover all aspects of these acidic ionic liquids, especially focusing on the developments in the last four years. The structural diversity and synthesis of acidic ionic liquids are discussed in the introduction sections of this review. In addition, an unambiguous classification system for various types of acidic ionic liquids is presented in the introduction. The physical properties including acidity, thermo-physical properties, ionic conductivity, spectroscopy, and computational studies on acidic ionic liquids are covered in the next sections. The final section provides a comprehensive review on applications of acidic ionic liquids in a wide array of fields including catalysis, CO2 fixation, ionogel, electrolyte, fuel-cell, membrane, biomass processing, biodiesel synthesis, desulfurization of gasoline/diesel, metal processing, and metal electrodeposition.

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Section: Catalysis Applicationsmentioning

confidence: 99%

Section: Applications Of Acidic Ionic Liquidsmentioning

confidence: 99%

Acidic Ionic Liquids

2016

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“…Ultrasonic radiation is one of the famous irradiation methods for accelerating various organic reaction [14][15][16]. Also, sonochemical method, since discovered, has been studied for yielding kinds of nanomaterials, especially noble metal nanoparticles, such as Ag, Au, Pt, and Pb producing nanoparticles [17].…”

Section: Introductionmentioning

confidence: 99%

A Green Approach for the Synthesis of Silver Nanoparticles Using Ultrasonic Radiation’s Times in Sodium Alginate Media: Characterization and Antibacterial Evaluation

Faried

Shameli

Miyake

et al. 2016

Journal of Nanomaterials

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The synthesis of silver nanoparticles (Ag-NPs) was achieved by a simple green chemistry procedure using sodium alginate (Na-Alg) under ultrasonic radiation as a stabilizer and physical reducing agent. The effect of radiation time on the synthesis of Ag-NPs was carried out at room temperature until 720 min. The successful formation of Ag-NPs has been confirmed by UV-Vis, XRD, TEM, FESEM-EDX, zeta potential, and FT-IR analyses. The surface plasmon resonance band appeared at the range of 452–465 nm that is an evidence of formation of Ag-NPs. The XRD study showed that the particles are crystalline structure in nature, with a face-centered cubic (fcc) structure. The TEM study showed the Ag-NPs have average diameters of around 20.16–22.38 nm with spherical shape. The FESEM-EDX analysis confirmed the spherical shape of Ag-NPs on the surface of Alg and the element of Ag with the high purity. The zeta potential showed high stability of Alg/Ag-NPs especially after 720 min irradiation with value of −67.56 mV. The FT-IR spectrum confirmed that the Ag-NPs have been capped by the Alg with van der Waals interaction. The Alg/Ag-NPs showed the antibacterial activity against Gram-positive and Gram-negative bacteria. These suggest that Ag-NPs can be employed as an effective bacteria inhibitor and can be applied in medical field.

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“…As a consequence of our interest in the synthesis of organic compounds accelerated by ultrasound (4,32) and to develop an environmentally benign synthesis in chemical research (9,(33)(34)(35), we investigated an efficient and green method in alkylation of nitrogen heterocycles under ultrasound irradiation. The objective of this article is to report the details of alkylation of indoles and imidazoles with epoxides to prepare alcohols using catalytic amount of mesoporous MCM-41 (Scheme 1).…”

Section: Introductionmentioning

confidence: 99%

Environmentally benign and highly regioselective ring opening of epoxides accelerated by ultrasound irradiation

Nasef

Zakeri

Asadi

et al. 2016

Green Chemistry Letters and Reviews

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Regioselective ring opening of aliphatic and aromatic epoxides with nitrogen heterocycles such as indoles and imidazoles was accelerated using an ultrasonic technique as a green approach. An optimized procedure with the catalyst of choice, MCM-41, represents a real alternative to the conventional reaction protocols owing to the catalyst recyclability, simplicity, green conditions and time-saving aspects.ARTICLE HISTORY

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Ultrasound-assisted regioselective ring opening of epoxides with nitrogen heterocycles using pyrrolidonium and imidazolium-based acidic ionic liquids

Cited by 11 publications

References 28 publications

Acidic Ionic Liquids

Acidic Ionic Liquids

A Green Approach for the Synthesis of Silver Nanoparticles Using Ultrasonic Radiation’s Times in Sodium Alginate Media: Characterization and Antibacterial Evaluation

Environmentally benign and highly regioselective ring opening of epoxides accelerated by ultrasound irradiation

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