Polyethylene glycol (PEG) as a green solvent for carbon–carbon bond formation reactions

Vafaeezadeh, Majid; Hashemi, Mohammed M.

doi:10.1016/j.molliq.2015.03.003

Cited by 110 publications

(34 citation statements)

References 71 publications

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“…Acrylamide is a water-soluble monomer that is biodegradable and widely used in a variety of chemical and environmental included production of plastics, dyes, and paper, in the treatment of drinking water, wastewater, and sewage (Kusnin et al 2015;Tepe and Çebi 2019). Water-soluble polyethylene glycol (PEG) is a well-known compound with a wide range of medical and industrial applications (Chen et al 2005(Chen et al , 2007Vafaeezadeh and Hashemi 2015). It is inexpensive and significantly less hazardous than other potential additives that require organic solvents.…”

Section: Introductionmentioning

confidence: 99%

Enhanced properties of single-layer particleboard made from oil palm empty fruit bunch fibre with additional water-soluble additives

Lee

Chin

H’ng

et al. 2021

BioRes

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The efficacy of additional water-soluble additives was studied relative to the physical and mechanical properties of particleboards produced from oil palm empty fruit bunch (OPEFB). Polyethylene glycol, acrylamide, and acrylic resin were selected as water-soluble additives for use in the OPEFB particleboard production process. The effects of the three additives at two different concentrations (2% and 4% of dry OPEFB mass) on the particleboard properties were evaluated. Addition of water-soluble additives increased the performance of the OPEFB particleboard. The additive concentration has a significant effect on the properties of the particleboard. With the increase of additive concentration, the internal bonding and modulus of rupture value increased while the thickness swelling and water absorption decreased. Particleboards with an additional 4% of acrylamide or polyethylene glycol achieved the highest modulus of rupture (22 MPa), highest internal bonding strength (1 N/mm2), and lowest thickness swelling (9%). All the particleboards produced with 4% of water-soluble additive achieved the standard requirements of JIS A 5908:2003 for physical and mechanical properties.

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Section: Introductionmentioning

confidence: 99%

Enhanced properties of single-layer particleboard made from oil palm empty fruit bunch fibre with additional water-soluble additives

Lee

Chin

H’ng

et al. 2021

BioRes

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“…1 Consequently, replacing conventional solvents, which are usually volatile organic compounds, with more environmentally benign media is one of the central issues of the Green Chemistry and a subject of significant academic and commercial interest. 2 In this regard, a variety of unconventional solvents, such as water, 3 ionic liquids, 4 fluorous media, 5 supercritical fluids 6 and polyethylene glycol 7 have been extensively studied and fascinating results have been reported. Although the use of these solvents is still subject to strict limitations, such as low solubility of starting materials and instability of reactive reagents or substrates in water, high prices and lack of data about the toxicity and bio-compatibility for ionic liquids.…”

Section: Introductionmentioning

confidence: 99%

γ-Valerolactone: Promising bio-compatible media for the synthesis of 2-arylbenzothiazole derivatives

Diwan¹,

Shaikh²,

Shaikh³

et al. 2019

Org.Commun.

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A new and efficient protocol was developed for synthesis of benzothiazoles as a potential antimicrobial and antioxidant agent using γ-Valerolactone (GVL) as catalyst and solvent under environmentally friendly conditions. The developed synthetic protocol represents a very simple and a novel route for the synthesis of 2substituted benzothiazole derivatives. In addition, an ultrasound irradiation technique was successfully implemented for performing the reactions in shorter reaction times. The synthesized benzothiazoles were evaluated for antimicrobial and antioxidant activity and was analysed for ADME properties.

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“…ILs can be used in different organic synthesis reactions due to their chemical and thermal stability, negligible vapor pressure, recyclability, high solubility in polar and non-polar solvents [21], nonflammability, mechanical and electrochemical backbone, and high electrical conductivity. Moreover, ILs are useful in electrochemical applications, extraction reactions, gas separations, carbohydrate dissolution, polymer chemistry, as anti-microbial and anti-electrostatic agents, in activation and stabilization of biomolecules, and nanoscience technology [22,23,32,[24][25][26][27][28][29][30][31]. The main drawbacks of DMC production are the formation of significant amounts of H 2 O in the reaction mixture and low DMC yield.…”

Section: Introductionmentioning

confidence: 99%

Greener synthesis of dimethyl carbonate from carbon dioxide and methanol using a tunable ionic liquid catalyst

2019

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Several types of ionic liquids (ILs) performance towards dimethyl carbonate (DMC) synthesis using cheap reactant (methanol) and waste CO2 which is abundantly available in the environment are discussed. We synthesized ILs with cheap raw materials such as ethylene glycol. The main aim of this study is to synthesize efficient catalysts for the production of profitable fuel additives. ILs show high thermal stability, less viscosity, and low vapor pressure. In addition, some ILs have high CO2 absorption capacity due to moderate acid-base properties. These ILs reversibly capture more CO2 which is more efficient towards mass transport of methanol at optimum reaction conditions which enhance the DMC yield. This catalytic system is easily reusable for several reactions without decreased performance under the same reaction conditions. These reaction conditions had an effect on the synthesis of DMC. Temperature, pressure, IL loading, and IL/DMAP ratio were fine tuned. We propose a mechanism which the reaction may follow. The synthesized ILs required moderate reaction conditions and reduce waste gases (CO2) from the environments as they have high CO2 absorption capacity compared to the metal oxide catalyst. Therefore, this catalytic system helps and gives new direction to synthesize new catalyst for other application.

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Polyethylene glycol (PEG) as a green solvent for carbon–carbon bond formation reactions

Cited by 110 publications

References 71 publications

Enhanced properties of single-layer particleboard made from oil palm empty fruit bunch fibre with additional water-soluble additives

Enhanced properties of single-layer particleboard made from oil palm empty fruit bunch fibre with additional water-soluble additives

γ-Valerolactone: Promising bio-compatible media for the synthesis of 2-arylbenzothiazole derivatives

Greener synthesis of dimethyl carbonate from carbon dioxide and methanol using a tunable ionic liquid catalyst

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