Tag: M.W=150-200

Han, Jie published the artcile2-Chloromethyl-1-methyl-1,3-benzimidazole, Related Products of imidazoles-derivatives, the publication is Acta Crystallographica, Section E: Structure Reports Online (2011), 67(8), o2104, database is CAplus and MEDLINE.

The title compound, C₉H₉ClN₂, was prepared from the reaction of N-methylbenzene-1,2-diamine and 2-chloroacetic acid in boiling 6 M hydrochloric acid. The benzimidazole unit is approx. planar, the largest deviation from the mean plane being 0.008(1) Å. The Cl atom is displaced by 1.667(2) Å from this plane. The Me group is statistically disordered with equal occupancy.

Acta Crystallographica, Section E: Structure Reports Online 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 C9H9ClN2, Related Products of imidazoles-derivatives.

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

Zhang, Xiaofang published the artcileGuiding cellular channels of artificial nanohybrid woods for anisotropic properties and solar-thermal evaporation, Related Products of imidazoles-derivatives, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2022), 132060, database is CAplus.

Natural evolution offers woods with intriguing multicomponent and anisotropic cellular structures, and endows super physicochem. properties. In order to compete with natural woods, many types of artificial woods were endeavored from polymers to achieve on-demand structures and functionalities. In most cases, production of oriented channels in mimic of wood lumina relied on a delicate unidirectional freeze-drying approach and utilization of volatile solvents. Herein we showed that artificial woods with controllable channel orientation could be produced from polymers in involatile solvents without particular control of freezing parameters. By dissolving cellulose in ionic liquid, oriented channels (diameter of 250-540μm) were produced through diffusion-induced phase separation and strengthened through a facile freezing and air-drying process. The compressive strength could reach 5.5 MPa at the strain of 15% along the channel direction. With the presence of structural anisotropy, incorporation of low-dimension nanomaterials offered the design flexibility in adding super properties in mechanics, water transportation, solar-thermal effect, thermal and photo conductance. For example, artificial hybrid woods with carbon nanotubes showed super solar-thermal property. When combining with the water-transporting ability of oriented channels, it was promising to design an efficient solar-thermal evaporator (5.88 kg m^-2 h^-1 under equivalent 3-sun irradiation). Thus, this study not only suggests an unprecedented approach of producing artificial woods from polymers in involatile solvents, but also offers the flexibility of designing microstructures and functionalities of artificial woods for various applications.

Chemical Engineering Journal (Amsterdam, Netherlands) 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 C18H26ClN3O, Related Products of imidazoles-derivatives.

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

Zhou, Yan published the artcileSuper-rapid and highly-efficient esterification of cellulose to achieve an accurate chromatographic analysis of its molecular weight, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride, the publication is Carbohydrate Polymers (2022), 119301, database is CAplus and MEDLINE.

Herein, a striking anion-tunnel transfer effect was demonstrated in 1-butyl-3-methylimidazolium benzoate (BmimPhCOO) ionic liquid, so a rapid, mild and efficient benzoylation of cellulose is accomplished under catalyst-free condition in BmimPhCOO. In a wide temperature range of 20-80°C, the equilibrium of reaction is reached within only 15 min, which is much faster than the reported acylation of cellulose. Furthermore, the resultant cellulose tribenzoates have excellent solubility in conventional organic solvents, thus they can be used to accurately reflect the mol. weight and dispersity index of cellulose raw materials by gel permeation chromatog. This method is suitable for various cellulose. Therefore, we found a new principle to realize the extremely-rapid acylation of cellulose, and proposed an effective approach to accurately determine the mol. weight parameters of cellulose.

Carbohydrate Polymers 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 C18H24N6O6S4, Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium chloride.

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

Shi, Xing-Xing published the artcileFerromagnetic coupling in copper benzimidazole chloride: structural, mass spectrometry, magnetism, and DFT studies, Category: imidazoles-derivatives, the publication is Dalton Transactions (2017), 46(47), 16663-16670, database is CAplus and MEDLINE.

Herein, quasi-square planar Cu^II(Hmbm)Cl₂ (CBC, Hmbm = (1-methyl-1H-benzo[d]imidazol-2-yl)methanol) was arranged in a pseudo orthogonal way to form Cl-bridged chains, and further π···π interactions resulted in distorted hexagonal layers. DFT calculations reveal a bond strength order of Cu-Cl > Cu-O/N ≫ Cu···Cl. ESI-MS data reveal several small fragments from CBC, but oligomeric [Cu^II₂], [Cu^II₃], and [Cu^II₄] for non-zero in-source energies; MS data indicates the occurrence of several chem. processes, viz. splitting of the ligand, oligomerization, and redox reaction of alc. to aldehyde and Cu^II to Cu^I. Gibbs free energies for the fragments were estimated using DFT. The magnetic susceptibility was modeled with the ferromagnetic coupling J(Cu-Cl2a···Cu) = +0.99(30) cm^-1 and J'(π···π) = +0.35(16) cm^-1 and g = 2.38(2). HF-EPR determined the anisotropic g-values, g_x = 2.24, g_y = 2.16, and g_z = 2.09, and a hyperfine constant of A_z = 450 G. DFT calculations from crystal structure data reveal a J(Cu-Cl2a···Cu) of +3.6 at 296 K and +4.1 cm^-1 at 90 K that dominates the magnetic properties, whereas J'(π···π) = 0.04 cm^-1 is negligibly small.

Dalton Transactions 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 C8H17Br, Category: imidazoles-derivatives.

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

Cao, Mengyan published the artcileRapid and Large-Scale Preparation of Stable and Efficient White Light Emissive Perovskite Microcrystals Using Ionic Liquids, Related Products of imidazoles-derivatives, the publication is Journal of Physical Chemistry Letters (2022), 13(26), 6048-6056, database is CAplus and MEDLINE.

In this work, we report large-scale preparation of stable Sb³⁺ and Bi³⁺ codoped Cs₂ZrCl₆ microcrystals for highly efficient white light emission using ionic liquids, demonstrating a broad dual-band white emission covering 400-800 nm. The dual emissions originate from the associated self-trapped excitons of the [SbCl₆]^3- and [BiCl₆]^3- octahedra. Moreover, the ratio of the dual-emission peaks can be effectively regulated by tuning the excitation wavelength. Meanwh000.0.0.0.0.ile, to improve the optical properties and stability, ionic liquids are employed to assist the synthesis process of perovskite materials. The white light emission of one of the samples demonstrates CIE coordinates right in the center of the white light region (0.334, 0.331) and an excellent color rendering index (~90.3), accompanied by a 66.1% quantum efficiency. Moreover, our method allows the facile synthesis of large batches of microcrystalline powders. Our findings demonstrate the potential of white phosphors as single components for future applications in lighting fields.

Journal of Physical Chemistry Letters 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

Aweke, Bamlaku Semagne published the artcileA Bis-(carbone) Pincer Ligand and Its Coordinative Behavior toward Multi-Metallic Configurations, Recommanded Product: 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, the publication is Angewandte Chemie, International Edition (2022), 61(24), e202201884, database is CAplus and MEDLINE.

Carbones are divalent carbon(0) species that contain two lone pairs of electrons. Herein, authors have prepared the first known stable and isolable free bis-(carbone) pincer framework with a well-defined solid-state structure. This bis-(carbone) ligand is an effective scaffold for forming monometallic (Ni and Pd) and trinuclear heterometallic complexes with Au-Pd-Au, Au-Ni-Au, and Cu-Ni-Cu configurations. Sophisticated quantum-theor. analyses found that the metal-metal interactions are too weak to play a significant role in upholding these multi-metallic configurations; rather, the four lone pairs of electrons within the bis-(carbone) framework are the main contributors to the stability of the complexes.

Angewandte Chemie, International Edition 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 C9H9ClN2, Recommanded Product: 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole.

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

Aweke, Bamlaku Semagne published the artcileA Bis-(carbone) Pincer Ligand and Its Coordinative Behavior toward Multi-Metallic Configurations, Formula: C9H10N2O, the publication is Angewandte Chemie, International Edition (2022), 61(24), e202201884, database is CAplus and MEDLINE.

Carbones are divalent carbon(0) species that contain two lone pairs of electrons. Herein, authors have prepared the first known stable and isolable free bis-(carbone) pincer framework with a well-defined solid-state structure. This bis-(carbone) ligand is an effective scaffold for forming monometallic (Ni and Pd) and trinuclear heterometallic complexes with Au-Pd-Au, Au-Ni-Au, and Cu-Ni-Cu configurations. Sophisticated quantum-theor. analyses found that the metal-metal interactions are too weak to play a significant role in upholding these multi-metallic configurations; rather, the four lone pairs of electrons within the bis-(carbone) framework are the main contributors to the stability of the complexes.

Angewandte Chemie, International Edition 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, Formula: C9H10N2O.

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

Cho, Chul-Woong published the artcileIn silico prediction and analysis of dielectric constant of ionic liquids, Quality Control of 79917-90-1, the publication is Korean Journal of Chemical Engineering (2022), 39(6), 1651-1657, database is CAplus.

Ionic liquids (ILs) are a class of chems. comprising cations and anions whose properties can be controlled by modifying their chem. structure, which enables a wide range of applications. Among the attractive properties of ILs, dielec. permittivity provides important information related to material solvation and capacitor characteristics. Because there are several ILs and a need to understand the structural effect on their properties, prediction model(s) should be developed. For this, we employed the linear free-energy relationship (LFER) equation to predict the dielec. constant of ILs. In the modeling, we used in silico calculated mol. descriptors because the empirically LFER estimated descriptors were limited. The results revealed that the developed model could predict the dielec. constant with an R² of 0.882. From the developed model, it was observed that the dielec. constant was more affected by the structure of cations compared to that of anions. In addition, the H-bonding acidity of the cation and basicity of the anion contributed to the dielec. property of ILs, and the dipolarity/polarizability of cations and anions was also important in the prediction. The predictive model is expected to be useful for designing IL structures considering the dielec. constant

Korean Journal of Chemical Engineering 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, Quality Control of 79917-90-1.

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

Shekaari, Hemayat published the artcileEffective ultrasonic-assisted extraction and solubilization of curcuminoids from turmeric by using natural deep eutectic solvents and imidazolium-based ionic liquids, Product Details of C8H15ClN2, the publication is Journal of Molecular Liquids (2022), 119351, database is CAplus.

Curcuminoids (CURs), bioactive and antioxidant polyphenols, are major components of turmeric. Com. available component in CURs are curcumin (C) as the main constituent and the other two demethoxycurcumin (DMC) and bisdemethoxycurcumin (BDMC) as minor components. Extraction and anal. of these components from turmeric may pose specific challenges and yield different results. The organic solvents applied in traditional solvent extraction systems are not eco-friendly owing to their properties such as flammability, toxicity and volatility. For this reason, in this research work, ten deep eutectic solvents (DESs) and three ionic liquids (ILs) were selected to investigate the extraction of CURs from turmeric. Further, DES and ILs-based extraction was performed under ultrasound. Under extraction conditions, the CURs in the turmeric powder was measured by the use of high performance liquid chromatog. (HPLC). The maximum CURs amount of 164.51 mg/g was attained using effective ultrasound-assisted extraction in 50% water content DES or IL at 5% solid loading with 50.8 W/cm2 power intensity at 363 K in 60 min. This improved extraction method can be economical, green and effective alternative to conventional solvent extraction for CURs. On the other hand, the solubility of standard CUR was obtained at 298.15 K using saturation shake flask method. Finally, Hansen solubility parameters (HSP) were applied to identify solvents which were compatible with CURs. All the results were consistent with each other, supporting the validity of our extraction method.

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 C8H8O2, Product Details of C8H15ClN2.

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

Boulebd, Houssem published the artcileSynthesis and biological evaluation of heterocyclic privileged medicinal structures containing (benz)imidazole unit, HPLC of Formula: 7467-35-8, the publication is Monatshefte fuer Chemie (2016), 147(12), 2209-2220, database is CAplus.

Abstract: New heterocyclic privileged medicinal scaffolds involving 4H-pyran, 1,4-dihydropyridine, quinazoline, and 2-aminochromene bearing a (benz)imidazole unit were prepared in good to excellent yields, and evaluated for their in vitro hepatotoxicity on HepG2 cells and antioxidant activity using DPPH radical-scavenging assay. From these results, 2-amino-4-(1-methyl-1H-imidazol-2-yl)-4H-benzo[h]chromene-3-carbonitrile has been identified as a racemic, readily available imidazole derivative, significantly less hepatotoxic than tacrine at 100 μM concentration One compound was a potent antioxidant agent. The catalytic effect of the 1-methylimidazole unit, in the synthesis of some heterocycle, was also demonstrated. Crystal x-ray structures are reported for six compounds Graphical abstract: [Figure not available: see fulltext.].

Monatshefte fuer Chemie 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, HPLC of Formula: 7467-35-8.

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