Glycerol functionalized imidazolium tri-cationic room temperature ionic liquids: Synthesis, properties and catalytic performance for 2-azidoalcohol synthesis from epoxide

Chaugule, Avinash A.; Tamboli, Ashif H.; Sheikh, Faheem A.; Chung, Wook–Jin; Kim, Hern

doi:10.1016/j.molliq.2015.04.058

Cited by 17 publications

(2 citation statements)

References 36 publications

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“…ILs are particularly well known as physical or chemical absorbents of CO 2 and can be turned to high CO 2 solubility through an appropriate cation and anion choice. [20][21][22] Moreover, in bulky and charge delocalized anions (e.g., BF 4 and PF 6 ), the interactions between methanol and the anion are very weak, thus the anion rather reacts with CO 2 to generate a new carbonyl anion species (NTf 2 /CO 2 ), which is more basic than the original anion. 5,23 Therefore, the new carbonyl anion species can attack methanol to generate a carbonate intermediate and nally DMC.…”

Section: Introductionmentioning

confidence: 99%

Efficient fixation and conversion of CO₂ into dimethyl carbonate catalyzed by an imidazolium containing tri-cationic ionic liquid/super base system

Chaugule

Tamboli

2016

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Efficient fixation and conversion of CO₂ into dimethyl carbonate catalyzed by an imidazolium containing tri-cationic ionic liquid/super base system

Chaugule

Tamboli

2016

RSC Adv.

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“…9(a)), which are extensively used in many gas phase reactions. 27,28 Even though these anions were effective promoters, their performance was considerably lower than that of the halide ions. These results also demonstrate the high possibility of cation activity in the conversion reaction.…”

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Synergistic activating effect of promoter and oxidant in single step conversion of methane into methanol over a tailored polymer-Ag coordination complex

et al. 2017

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Single-step conversion of methane to its oxygenated derivatives, such as methanol, is a challenging topic in C1 chemistry. The presence of Brønsted-acidic sites, N-and O-type chelating ligands, and noble metals are demonstrated to be essential criteria for effective catalysis of this reaction. Considering these criteria, a catalytic complex was tailored herein. Poly-D-glucosamine (Ch) was used as chelating ligand for Ag, to incorporate the robust redox properties of Ag(I). The prepared AgCh complex was characterized by techniques including solid-state 1 H-NMR, FE-TEM, XANES, and XPS. Besides highlighting the utility of chelate complexation for providing new materials, this study elucidates the effects of the oxidant and promoters on the methane oxidation. The catalytic activity was tested for different oxidant combinations, including hydrogen peroxide, oxygen, and carbon dioxide. Of all of them, a mixture of hydrogen peroxide and oxygen showed the highest selectivity for oxidation of methane to methanol. Further, it was observed that the addition of 1-butyl-3-methylimidazolium chloride [BMIM] + Cl À as a promoter to the hydrogen peroxide and oxygen-containing AgCh system could enhance methanol production. The methanol yield reached up to 3166 mmol, representing an 18-fold yield increase and an 8-fold methane conversion increase when compared to the results (175 mmol) without a promoter.

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Synthesis of Triethylamine‐Bridged Basic Tricationic Ionic Liquids and Evaluation of Their Catalytic Efficiencies for Preparation of Arylidene or Alkylidenemalononitrile

2018

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Two series of basic triethylamine bridged pyridinium/imidazolium tricationic ionic liquids were synthesized as viscous liquids by ion‐pairing with hydroxide, acetate and imidazolide as basic anions. The characterization of tricationic ionic liquids was done using 1H and 13C NMR, FT‐IR, Thermogravimetric analysis (TGA), Hammett basicity EI‐MS and elemental analysis techniques. Thermal stabilities were found within the range of 100–150 °C for these ionic liquids. They acted as efficient recyclable homogeneous catalysts for the representative Knoevenagel condensation of benzaldehyde and malononitrile at room temperature stirring in neat condition for 10–20 min. The catalytic activity of these ILs was found to be slightly different from each other for the model reaction and did not follow the same sequence of their measured Hammett basicity value.

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Glycerol functionalized imidazolium tri-cationic room temperature ionic liquids: Synthesis, properties and catalytic performance for 2-azidoalcohol synthesis from epoxide

Cited by 17 publications

References 36 publications

Efficient fixation and conversion of CO₂ into dimethyl carbonate catalyzed by an imidazolium containing tri-cationic ionic liquid/super base system

Efficient fixation and conversion of CO₂ into dimethyl carbonate catalyzed by an imidazolium containing tri-cationic ionic liquid/super base system

Synergistic activating effect of promoter and oxidant in single step conversion of methane into methanol over a tailored polymer-Ag coordination complex

Synthesis of Triethylamine‐Bridged Basic Tricationic Ionic Liquids and Evaluation of Their Catalytic Efficiencies for Preparation of Arylidene or Alkylidenemalononitrile

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Glycerol functionalized imidazolium tri-cationic room temperature ionic liquids: Synthesis, properties and catalytic performance for 2-azidoalcohol synthesis from epoxide

Cited by 17 publications

References 36 publications

Efficient fixation and conversion of CO2 into dimethyl carbonate catalyzed by an imidazolium containing tri-cationic ionic liquid/super base system

Efficient fixation and conversion of CO2 into dimethyl carbonate catalyzed by an imidazolium containing tri-cationic ionic liquid/super base system

Synergistic activating effect of promoter and oxidant in single step conversion of methane into methanol over a tailored polymer-Ag coordination complex

Synthesis of Triethylamine‐Bridged Basic Tricationic Ionic Liquids and Evaluation of Their Catalytic Efficiencies for Preparation of Arylidene or Alkylidenemalononitrile

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Efficient fixation and conversion of CO₂ into dimethyl carbonate catalyzed by an imidazolium containing tri-cationic ionic liquid/super base system

Efficient fixation and conversion of CO₂ into dimethyl carbonate catalyzed by an imidazolium containing tri-cationic ionic liquid/super base system