Graphene Oxide-Supported Ionic Liquid Phase Catalyzed Synthesis of 3,4-Dihydro-2H-naphtho[2,3-e][1,3]oxazine-5,10-diones

Gajare, Shivanand; Patil, Audumbar; Kale, Dolly; Bansode, Prakash; Patil, Pradnya V.; Rashinkar, Gajanan

doi:10.1007/s10562-019-02934-0

Cited by 12 publications

(9 citation statements)

References 61 publications

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“…[24,25] The liquid-liquid biphasic catalysis system has received much attention, and the possibility of using this technology in industrial processes is being investigated by many researchers. [15,26] In recent decades the ILs have attracted much attention because of their extensive applications in organic synthesis, [27][28][29][30][31][32][33] catalytic oligomerization of ethylene, [4,17,25] chemical separation, [34][35][36] material, and energy science. [37,38] For example, the chloroaluminate IL has been used as solvents in ethylene oligomerization reactions in the presence of nickel complexes to overcome the deactivation of the catalyst.…”

Section: Introductionmentioning

confidence: 99%

Influence of ionic liquid counterions on activity and selectivity of ethylene trimerization using chromium‐based catalysts in biphasic media

Marefat

Ahmadi

Mohamadnia

2020

Applied Organom Chemis

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In recent years ionic liquids (ILs) have attracted much interest because of their widespread use in various fields. Several trimerization and oligomerization catalysts have been evaluated in ILs with different organic–inorganic hybrid structures. High catalytic activity and selectivity, easy product separation, and recycling of the catalyst are the advantages of a biphasic catalyst system compared to the homogeneous catalysts. In this study, the influence of IL counter‐anions on activity and selectivity of the ethylene trimerization catalysts based on Cr‐SNS‐R was investigated. All synthesized materials were characterized using Fourier‐transform infrared spectroscopy, 1H NMR, 13C NMR, UV–Vis. spectroscopy, thin‐layer chromatography, and elemental analysis (CHNS). In ethylene trimerization reaction, the dodecyl substituent in the SNS ligand exhibited better activity and selectivity than the butyl substituent. The results revealed that the presence of BF4− as a counter‐anion in the IL led to an increase in activity and selectivity compared to Br− and I− counter‐anions. It was found that the BF4− counter‐anion plays a conclusive role in the development of 1‐hexene activity and selectivity to a maximum amount of 71,132 g1‐C6/(gCr × h) and more than 99%, respectively. Finally, the catalyst was reused thrice without losing its 1‐hexene selectivity.

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Section: Introductionmentioning

confidence: 99%

Influence of ionic liquid counterions on activity and selectivity of ethylene trimerization using chromium‐based catalysts in biphasic media

Marefat

Ahmadi

Mohamadnia

2020

Applied Organom Chemis

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“…Peak noticed at ≈26° was attributed to Sp 2 graphitic layers of carbon corresponding to [002] planes. [ 53–55 ] Interplanar spacing of PT GO was decreased as 0.33 nm may be due to a slightly shifted peak toward higher 2 θ values from 26.2° to 26.4°. Decreased d‐spacing of PT samples indicated exfoliation of GO due to oxygenated species.…”

Section: Resultsmentioning

confidence: 99%

Synergetic Effect of Plasma‐Treated Graphene Oxide/Polymer Blends for Electrostatic Dissipative Applications

Humbe

Joshi

Deshmukh

2022

Physica Status Solidi (a)

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Prevention of electrostatic discharge is a very important aspect of the electronic domain. The development of electrostatic dissipative (ESD) materials is crucial for packaging materials. The present work focuses on chemical‐free air plasma‐treated graphene oxide (PT GO) loaded polyvinylidene fluoride (PVDF)/polysulfone (PSF) blends for ESD applications. Molecular vibrations and phases of the host polymer system and filler confirmed by Raman spectroscopy were observed. Decreased intensity and interplanar spacing demonstrate exfoliation of GO due to plasma exposure confirmed by X‐ray diffraction (XRD). GO clusters in the host polymer blend system are investigated by scanning electron microscope (SEM). The electrical properties of modified blends are obtained by an impedance analyzer. Enhanced electrical conductivity up to 10−3 (AC) and 10−1 (DC) S cm−1 for plasma‐treated samples demonstrated excellent electronic transportation within the polymer matrix mutually matching the ESD. Reduced area under the curve of impedance confirms the increased electrical conductivity of material due to enhanced conducting boundaries because of plasma exposure. Overall, adequate results of the modified polymer blends by plasma‐treated GO could be emerging material for ESD applications.

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“…The obtained system was applied with a very good result in the synthesis of 3,4-dihydro-2H-naphthol [2-e] [1,3]oxazine-5,10-dione. The catalytic reaction in the presence of the SILP material proceeded fast and environmentally mild solvents were used [79]. On the other hand, phosphonium ionic liquid-modified silica with the addition of a palladium catalyst has been employed in the reaction of aminocarbonylation.…”

Section: Supported Ionic Liquid Phase Catalysts (Silpcs)mentioning

confidence: 99%

Heterogeneous Catalysis with the Participation of Ionic Liquids

et al. 2020

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This mini-review briefly describes the recent progress in the design and development of catalysts based on the presence of ionic liquids. In particular, the focus was on heterogeneous systems (supported ionic liquid (IL) phase catalysts (SILPC), solid catalysts with ILs (SCILL), porous liquids), which due to the low amounts of ionic liquids needed for their production, eliminate basic problems observed in the case of the employment of ionic liquids in homogeneous systems, such as high price, high viscosity, and efficient isolation from post-reaction mixtures.

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Graphene Oxide-Supported Ionic Liquid Phase Catalyzed Synthesis of 3,4-Dihydro-2H-naphtho[2,3-e][1,3]oxazine-5,10-diones

Cited by 12 publications

References 61 publications

Influence of ionic liquid counterions on activity and selectivity of ethylene trimerization using chromium‐based catalysts in biphasic media

Influence of ionic liquid counterions on activity and selectivity of ethylene trimerization using chromium‐based catalysts in biphasic media

Synergetic Effect of Plasma‐Treated Graphene Oxide/Polymer Blends for Electrostatic Dissipative Applications

Heterogeneous Catalysis with the Participation of Ionic Liquids

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