Tag: M.W=150-200

Parada, Walter A. published the artcileCO₂ Electroreduction on Silver Foams Modified by Ionic Liquids with Different Cation Side Chain Length, SDS of cas: 79917-90-1, the publication is ACS Applied Materials & Interfaces (2022), 14(12), 14193-14201, database is CAplus and MEDLINE.

Ionic liquids (ILs) are capable of tuning the kinetics of electroreduction processes by modifying a catalyst interface. A group of hydrophobic imidazolium-based ILs were immobilized on Ag foams by using a procedure known as solid catalyst with ionic liquid layer (SCILL). The derived electrocatalysts demonstrated altered selectivity and CO production rates for the electrochem. reduction of CO₂ compared to the unmodified Ag foam. The activity change caused by the IL was dependent on the length of the N-alkyl substituent. The rate of CO production is optimized at moderate chain length and IL loadings. The observed trends are attributed to a local enrichment of CO₂-based species in the proximity of the catalyst and a modification of the environment of its active sites. On the contrary, high loadings or long IL chains render the surface inaccessible and favor the H evolution reaction.

ACS Applied Materials & Interfaces published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, SDS of cas: 79917-90-1.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Srinivas Rao, S. published the artcileSynthesis of N-alkyl-2-thiomethyl benzimidazoles: a green approach, SDS of cas: 4760-35-4, the publication is Organic Chemistry International (2014), 239710/1-239710/5, 5 pp., database is CAplus.

A green approach for the synthesis of N-alkyl-2-thiomethyl benzimidazoles I (R = CH₃, C₂H₅, CH₂Ph) under different conditions has been developed from N-alkyl-2-chloromethyl benzimidazoles by reaction with thiourea by phys. grinding, or by using green solvents like ethanol and PEG-600, or by using microwave irradiation technique.

Organic Chemistry International published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C9H9NO, SDS of cas: 4760-35-4.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Srinivas, Rao S. published the artcileA facile and Eco-friendly synthesis of 1-methyl-2-((alkylthio)methyl)-1H-benzimidazole, Synthetic Route of 4760-35-4, the publication is Heterocyclic Letters (2014), 4(2), 245-249, 5 pp., database is CAplus.

A green approach for the synthesis of 1-methyl-2-[(alkylthio)methyl]-1H-benzimidazoles I (R¹ = CH₃, C₂H₅, CH₂Ph) under different conditions was developed from N-methyl-2-thiomethylbenzimidazole (i.e. CH₃) by reacting with an alkylating agent by phys. grinding or by using green solvent like PEG-600 or by using microwave irradiation technique.

Heterocyclic Letters published new progress about 4760-35-4. 4760-35-4 belongs to imidazoles-derivatives, auxiliary class Chloride,Benzimidazole, name is 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, and the molecular formula is C16H24BF4Ir, Synthetic Route of 4760-35-4.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Zdolsek, Nikola published the artcileBoosting electrocatalysis of oxygen reduction and evolution reactions with cost-effective cobalt and nitrogen-doped carbons prepared by simple carbonization of ionic liquids, Safety of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is International Journal of Hydrogen Energy (2022), 47(33), 14847-14858, database is CAplus.

Development of cost-effective, bi-functional carbon electrocatalysts via direct carbonization of ionic liquids (bis(cholinium) tetrachlorocobaltate(II) ([Ch]₂[CoCl₄]) and bis(1-butyl-3-methylimidazolium) tetrachlorocobaltate(II) ([Bmim]₂[CoCl₄])) is reported herein for the first time. Carbon electrocatalysts, dual-doped with cobalt and nitrogen, were tested for oxygen reduction (ORR) and oxygen evolution (OER) reactions. Both materials show high bi-functional catalytic activity and excellent stability due to synergistic effects arising from the presence of nitrogen and cobalt. Electrocatalyst prepared by carbonization of [Ch]₂[CoCl₄] show exceptional activity and selectivity toward ORR. Conversely, electrocatalyst prepared from [Bmim]₂[CoCl₄] showed a slightly better OER performance indicating that different catalytic sites are responsible for O₂ reduction and H₂O oxidation Parent CoO particles with graphitic nitrogen boost activity for ORR, while elemental Co supported by nitrogen atoms is responsible for OER activity. Finally, energy consumption during electrolytic oxygen production was calculated revealing energy saving when using two materials as anode electrocatalysts.

International Journal of Hydrogen Energy published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C18H20N2O12, Safety of 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Yue, Yuxue published the artcileRegulation of the liquid-solid interface of Cs catalysts for the synthesis of 1,1-Dichloroethylene from 1,1,2-Trichloroethane, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Applied Surface Science (2022), 154033, database is CAplus.

There remain considerable challenges for Cs-based catalysts in gas-phase dehydrochlorination of 1,1,2-trichloroethane (TCE) due to their poor catalytic performance and harsh reaction temperature requirements. In this work, we report a novel supported ionic liquid (IL) phase Cs-based system and evaluate its catalytic performance and mechanism, combining the kinetic and DFT calculations The optimal Cs-IL/SiO₂ catalyst achieved the TCE conversion of 60% and the selectivity to 1,1-Dichloroethylene (VDC) of 86% under the mild temperature of 200°C. It is demonstrated that IL additives can significantly improve the dispersion of Cs species during the catalyst preparation and evaluation process. Moreover, IL promotes the activation of TCE and enhances the desorption efficiency of HCl, which is the main reason for its high activity. The selectivity is improved by changing the adsorption behaviors of the products, which ensures the preferential formation of the main product VDC. The enhanced activity and selectivity of Cs-IL/SiO₂ suggest a promising candidate for dehydrochlorination reaction.

Applied Surface Science published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C3H5BN2O2, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Fadaei, Fatemeh published the artcileStructural specificity of groove binding mechanism between imidazolium-based ionic liquids and DNA revealed by synchrotron-UV Resonance Raman spectroscopy and molecular dynamics simulations, Related Products of imidazoles-derivatives, the publication is Journal of Molecular Liquids (2022), 118350, database is CAplus.

The predicted capability of Ionic Liquids (ILs) in stabilizing the native structure of nucleic acids is relevant in biotechnol., especially for DNA storage and handling. In the present work, we implement a joint combination of advanced spectroscopic techniques such as synchrotron radiation-UV Resonance Raman spectroscopy (SR-UVRR) and mol. dynamics (MD) simulations for deepening insight into the sequence and structural specificity of the binding interactions between imidazolium-based ILs and both the phosphate groups and nucleobases in the minor and major grooves of double-stranded DNA. A 30-base pair double-stranded DNA structure has been chosen as a model of natural DNA. The exptl. and simulation results give evidence of the predominance of a groove binding mechanism between ILs cations and DNA, with preferential interactions among guanine residues and the shorter alkyl-chain length on imidazolium cations. Raman experiments allowed us to detect both cooperative transition and reversible pre-melting structural transformations that involve specific tracts in the structure of DNA and are turned on at lower temperatures for guanine residues than for adenine ones. The more marked effect on the pre-melting states of adenine operated by the imidazolium-based ILs with chloride as anion suggests a selective strong interaction of this anion with the DNA’s adenine-rich tracts. MD simulation results reveal the influence of ILs on the structural properties of DNA and provide more details about the solvation, interaction, stability and flexibility of DNA in the hydrated ILs. According to MD analyses, simultaneous electrostatic and hydrophobic interactions drive the shorter alkyl-chain length of imidazolium cations to have greater interplays with the DNA major groove.

Journal of Molecular Liquids published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Related Products of imidazoles-derivatives.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Khristich, B. I. published the artcileFree-radical hydroxymethylation of benzimidazole, SDS of cas: 7467-35-8, the publication is Khimiya Geterotsiklicheskikh Soedinenii (1982), 1679-81, database is CAplus.

Free radical hydroxymethylation of benzimidazoles I (R = Me, PhCH₂, Ph, p-MeOC₆H₄, p-PhC₆H₄, R¹ = R² = H; R = Me, R¹ = NO₂, MeO, R² = H) to give hydroxymethyl derivatives I (R² = CH₂OH) was carried out by refluxing in aqueous MeOH containing concentrated H₂SO₄ and (NH₄)₂S₂O₈ 24 h, or by heating aqueous MeOH containing concentrated H₂SO₄ and (NH₄)₂S₂O₈ in an ampule 7 h at 40-50°, or by refluxing an aqueous MeOH solution containing concentrated H₂SO₄, AgNO₃, and (NH₄)₂S₂O₈ 3 h. Higher yields were obtained via the last method.

Khimiya Geterotsiklicheskikh Soedinenii published new progress about 7467-35-8. 7467-35-8 belongs to imidazoles-derivatives, auxiliary class Benzimidazole,Alcohol, name is (1-Methyl-1H-benzo[d]imidazol-2-yl)methanol, and the molecular formula is C9H10N2O, SDS of cas: 7467-35-8.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Rahaman, Mohammad Shahinur published the artcileCooperative Bronsted-Lewis acid sites created by phosphotungstic acid encapsulated metal-organic frameworks for selective glucose conversion to 5-hydroxymethylfurfural, Name: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Fuel (2022), 310(Part_C), 122459, database is CAplus.

Production of 5-hydroxymethylfurfural (HMF) from biomass-derived glucose has great potential for synthesis of renewable fuels and chems. Selective glucose conversion to 5-hydroxymethylfurfural requires a balance between Lewis and Bronsted acids for the cascade of glucose isomerization followed by fructose dehydration. A dual Bronsted-Lewis acid, phosphotungstic acid encapsulated MIL-101(Al)-NH₂ metal-organic frameworks (MOFs) was developed to catalyze the glucose dehydration reaction. The encapsulated catalysts had a high HMF selectivity of 58% at 44% glucose conversion at 120°C in [C₄C₁i.m.]Cl. Phosphotungstic acid was uniformly dispersed in the MOF pores, which provided both Bronsted and Lewis acid sites for this cascade reaction. The Bronsted acidic phosphotungstic acid-encapsulated MOF catalyst was stable and recyclable at least four times. These findings explain the effect of phosphotungstic acid location for maximizing the HMF selectivity and suggest a new approach for the design of bifunctional solid acid catalysts for selective HMF production from glucose. Moreover, the tunability of the acid properties of the encapsulated MOF catalysts provides opportunities for other biomass transformations.

Fuel published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Name: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Ryabukhin, Dmitry S. published the artcileReactions of 2-carbonyl- and 2-hydroxy(or methoxy)alkyl-substituted benzimidazoles with arenes in the superacid CF3SO3H. NMR and DFT studies of dicationic electrophilic species, SDS of cas: 7467-35-8, the publication is Beilstein Journal of Organic Chemistry (2019), 1962-1973, database is CAplus and MEDLINE.

Reactions of 2-carbonyl- and 2-hydroxy(or methoxy)alkylbenzimidazoles with arenes in the Bronsted superacid TfOH resulted in the formation of the corresponding Friedel-Crafts reaction products, 2-diarylmethyl and 2-arylmethyl-substituted benzimidazoles, in yields up to 90%. The reaction intermediates, protonated species derived from starting benzimidazoles in TfOH, were thoroughly studied by means of NMR and DFT calculations; and plausible reaction mechanisms were discussed.

Beilstein Journal of Organic Chemistry published new progress about 7467-35-8. 7467-35-8 belongs to imidazoles-derivatives, auxiliary class Benzimidazole,Alcohol, name is (1-Methyl-1H-benzo[d]imidazol-2-yl)methanol, and the molecular formula is C9H10N2O, SDS of cas: 7467-35-8.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem

Guiao, Karelle S. published the artcileGreen mechano-chemical processing of lignocellulosic biomass for lignin recovery, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Chemosphere (2022), 133647, database is CAplus and MEDLINE.

Lignin extraction from biomass is heavily dependent on chem. processes that are harmful to the environment and the quality of the recovered lignin. Ionic liquid solvents are some of the latest solutions in green processing; however, their implementation for lignin recovery is limited by their high cost, typically high loadings requirements, and long processing times. To overcome these issues, in this study, high loadings of mixed hardwood flour (MHF) were processed with 1-butyl-3-methylimidazolium chloride (BmimCl) in a batch mixer. The rheol. behavior of the biomass and ionic liquid mixture was studied. The mixture had a high complex viscosity (approx. 10⁷ Pa s) at low shear rates and displayed pronounced shear thinning behavior at 50 wt% MHF loading. A 2² factorial design was also implemented to study the effects of MHF solid loading amount and residence time on lignin extraction yield. A maximum yield of 36.6% was obtained at the maximum solid loading amount and residence time (50 wt% and 45 min, resp.). The extracted lignin samples were also characterized in comparison with com. kraft lignin and lignosulfonate. The novelty of this study is the successful lignin extraction at high solid loadings and shorter residence times compared to previous biomass pre-treatments with ionic liquids that employs low solid loading and long processing times.

Chemosphere published new progress about 79917-90-1. 79917-90-1 belongs to imidazoles-derivatives, auxiliary class Ionic Liquid,Ionic Liquid, name is 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, and the molecular formula is C8H15ClN2, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

Referemce:
https://en.wikipedia.org/wiki/Imidazole,
Imidazole | C3H4N2 – PubChem