Imidazoles-derivatives

Shen, Duyi published the artcileA Mononuclear Manganese Complex of a Tetradentate Nitrogen Ligand – Synthesis, Characterizations, and Application in the Asymmetric Epoxidation of Olefins, HPLC of Formula: 4760-35-4, the publication is European Journal of Inorganic Chemistry (2014), 2014(33), 5777-5782, database is CAplus.

A new chiral manganese complex (C1) bearing a tetradentate nitrogen ligand containing chiral bipyrrolidine and benzimidazole moieties was prepared The structure of C1 was confirmed by ESI-MS and crystallog. This manganese complex is an active catalyst for the asym. epoxidation of various olefins with excellent conversion (up to 99 %) and high enantiomeric excess (up to 96% ee) with hydrogen peroxide as the oxidant in the presence of 2-ethylhexanoic acid or acetic acid. Compared with previous structurally similar manganese complexes with different diamine backbones (C2, cyclohexanediamine; C3, diamine from L-proline), C1 showed improved asym. induction, especially for simple olefins such as styrene derivatives and substituted chromene. The possible reasons for the improvement of the ee values are discussed in the text on the basis of the crystal structures of the manganese complexes.

European Journal of Inorganic Chemistry 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 C9H9BrO2, HPLC of Formula: 4760-35-4.

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

Du, Junyi published the artcileA novel manganese(III)-peroxo complex bearing a proline-derived pentadentate aminobenzimidazole ligand, Recommanded Product: 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole, the publication is Chinese Chemical Letters (2018), 29(12), 1869-1871, database is CAplus.

Manganese(III)-peroxo complexes are invoked as key intermediates in the enzymic cycles of Mn-containing enzymes, and the synthesis of reactive manganese(III)-peroxo complexes with rationally designed ligand was of great interest in the communities of bioinorganic and biomimetic chem. Herein, the authors designed a novel pentadentate aminobenzimidazole ligand and obtained its manganese(II) complex, which was successfully applied in the synthesis of a reactive manganese(III)-peroxo complex by treatment with hydrogen peroxide in the presence of triethylamine. The manganese(III)-peroxo complex was well characterized with various spectroscopic techniques, including UV-visible spectrophotometry, cold-spray ionization time-of-flight mass spectrometry (CSI-TOF MS), and continuous wave ESR (CW-EPR) spectroscopy. Besides, its reactivity in aldehyde deformylation was studied, demonstrating second-order kinetics in the reaction with 2-phenylpropionaldehyde and affording acetophenone as the sole product.

Chinese Chemical 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 C9H9ClN2, Recommanded Product: 2-(Chloromethyl)-1-methyl-1H-benzo[d]imidazole.

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

Sun, Sang-dun published the artcileHQSAR study and molecular design of benzimidazole derivatives as corrosion inhibitors, SDS of cas: 7467-35-8, the publication is Wuli Huaxue Xuebao (2013), 29(6), 1192-1200, database is CAplus.

Hologram quant. structure-activity relationship (HQSAR) anal. was conducted on a series of benzimidazole compounds to build the HQSAR model between corrosion inhibition properties and mol. structures in acid environment. The optimal HQSAR model was determined by investigating the influence of different fragment distinction and fragment size on the models, and the models stability and predictive ability were evaluated. The results show that the optimal HQSAR model was generated using atoms (A), bonds (B), connectivity (C), hydrogen (H), chirality (Ch), donor and acceptor (D&A) as fragment distinction and fragment size of 1-3. The model had a non-cross validated coefficient (r²) value of 0.996, a cross-validated (q²) value of 0.960, and a cross-validated standard error value of 3.709, which indicates good statistics stability and predictive power. On the basis of the maps derived from the optimal HQSAR model, 38 new benzimidazole derivatives were designed and screened using the optimal HQSAR model, giving potential candidates with high predictive inhibition efficiency. This work provides valuable information for further research and design of more promising corrosion inhibitors in the oil and gas field.

Wuli Huaxue Xuebao 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 C11H24O3, SDS of cas: 7467-35-8.

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

Sun, Sang-dun published the artcileHQSAR study and molecular design of benzimidazole derivatives as corrosion inhibitors, Quality Control of 4760-35-4, the publication is Wuli Huaxue Xuebao (2013), 29(6), 1192-1200, database is CAplus.

Hologram quant. structure-activity relationship (HQSAR) anal. was conducted on a series of benzimidazole compounds to build the HQSAR model between corrosion inhibition properties and mol. structures in acid environment. The optimal HQSAR model was determined by investigating the influence of different fragment distinction and fragment size on the models, and the models stability and predictive ability were evaluated. The results show that the optimal HQSAR model was generated using atoms (A), bonds (B), connectivity (C), hydrogen (H), chirality (Ch), donor and acceptor (D&A) as fragment distinction and fragment size of 1-3. The model had a non-cross validated coefficient (r²) value of 0.996, a cross-validated (q²) value of 0.960, and a cross-validated standard error value of 3.709, which indicates good statistics stability and predictive power. On the basis of the maps derived from the optimal HQSAR model, 38 new benzimidazole derivatives were designed and screened using the optimal HQSAR model, giving potential candidates with high predictive inhibition efficiency. This work provides valuable information for further research and design of more promising corrosion inhibitors in the oil and gas field.

Wuli Huaxue Xuebao 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 C10H15NO, Quality Control of 4760-35-4.

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

Beillard, Audrey published the artcileCu(0), O₂ and mechanical forces: a saving combination for efficient production of Cu-NHC complexes, Quality Control of 258278-25-0, the publication is Chemical Science (2017), 8(2), 1086-1089, database is CAplus and MEDLINE.

Mech. forces induced by ball-milling agitation enabled the highly efficient and widely applicable synthesis of Cu-carbene complexes from N,N-diaryl-imidazolium salts and metallic Cu. The required amount of gaseous dioxygen and insoluble Cu could be reduced down to stoichiometric quantities, while reaction rates clearly outperformed those obtained in solution Use of Cu(0) as the Cu source enabled the application of this approach to a wide array of N,N-diaryl-imidazolium salts (Cl^–, BF₄^– and PF₆^–) that transferred their counteranion directly to the organometallic complexes. Cu-NHC complexes could be produced in excellent yields, including use of highly challenging substrates. Five unprecedented organometallic complexes are reported.

Chemical Science published new progress about 258278-25-0. 258278-25-0 belongs to imidazoles-derivatives, auxiliary class Achiral NHCs Ligands, name is 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, and the molecular formula is C27H39ClN2, Quality Control of 258278-25-0.

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

Akkahat, Piyaporn published the artcileSurface-Grafted Poly(acrylic acid) Brushes as a Precursor Layer for Biosensing Applications: Effect of Graft Density and Swellability on the Detection Efficiency, Name: N-(2-(2-(2-(2-Aminoethoxy)ethoxy)ethoxy)ethyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide, the publication is Langmuir (2012), 28(11), 5302-5311, database is CAplus and MEDLINE.

Carboxyl groups along poly(acrylic acid) (PAA) brushes attached to the surface of a gold-coated substrate served as the precursor moieties for the covalent immobilization of amino-functionalized biotin or bovine serum albumin (BSA) to form a sensing probe for streptavidin (SA) or anti-BSA detection, resp. Surface-grafted PAA brushes were obtained by acid hydrolysis of poly(tert-Bu acrylate) brushes, formerly prepared by surface-initiated atom transfer radical polymerization of tert-Bu acrylate. As determined by surface plasmon resonance, the PAA brushes immobilized with functionalized biotin or BSA probes not only showed good binding with the designated target analytes but also maintained a high resistance to nonspecific protein adsorption, especially those PAA brushes with a high surface graft d. Although the probe binding capacity can be raised as a function of the graft d. of the PAA brushes or the amount of carboxyl groups along the PAA chains, the accessibility of the target analyte to the immobilized probe was limited at the high graft d. of the PAA brushes. The effect was far more apparent for the BSA-anti-BSA probe-analyte pair than for the much smaller biotin-SA probe-analyte pair. The impact of the swellability of the PAA brushes, as tailored by the degree of carboxyl group activation, on both the sensing probe immobilization and analyte detection was also addressed. This investigation demonstrated that PAA brushes having a defined graft d. have a promising potential as a precursor layer for biosensing applications.

Langmuir published new progress about 359860-27-8. 359860-27-8 belongs to imidazoles-derivatives, auxiliary class Other Aliphatic Heterocyclic,Chiral,Amine,Amide,Ether,Inhibitor, name is N-(2-(2-(2-(2-Aminoethoxy)ethoxy)ethoxy)ethyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide, and the molecular formula is C18H34N4O5S, Name: N-(2-(2-(2-(2-Aminoethoxy)ethoxy)ethoxy)ethyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide.

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

Marrero-Ponce, Yovani published the artcileAtom, atom-type, and total nonstochastic and stochastic quadratic fingerprints: a promising approach for modeling of antibacterial activity, HPLC of Formula: 2508-72-7, the publication is Bioorganic & Medicinal Chemistry (2005), 13(8), 2881-2899, database is CAplus and MEDLINE.

The Topol. Mol. Computer Design (TOMOCOMD-CARDD) approach has been introduced for the classification and design of antimicrobial agents using computer-aided mol. design. For this propose, atom, atom-type, and total quadratic indexes have been generalized to codify chem. structure information. In this sense, stochastic quadratic indexes have been introduced for the description of the mol. structure. These stochastic fingerprints are based on a simple model for the intramol. movement of all valence-bond electrons. In this work, a complete data set containing 1006 antimicrobial agents is collected and presented. Two structure-based antibacterial activity classification models have been generated. The models (including nonstochastic and stochastic indexes) classify correctly more than 90% of 1525 compounds in training sets. These models permit the correct classification of 92.28% and 89.31% of 505 compounds in an external test sets. The approach, also, satisfactorily compares with respect to nine of the most useful models for antimicrobial selection reported to date. Finally, a virtual screening of 87 new compounds reported in the anti-infective field with antibacterial activities is developed showing the ability of the models to identify new leads as antibacterial.

Bioorganic & Medicinal Chemistry published new progress about 2508-72-7. 2508-72-7 belongs to imidazoles-derivatives, auxiliary class Inhibitor,Immunology/Inflammation,Histamine Receptor, name is N-Benzyl-N-((4,5-dihydro-1H-imidazol-2-yl)methyl)aniline hydrochloride, and the molecular formula is C17H20ClN3, HPLC of Formula: 2508-72-7.

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

Zhang, Xuan published the artcilePhosphonium Salts as Pseudohalides: Regioselective Nickel-Catalyzed Cross-Coupling of Complex Pyridines and Diazines, Computed Properties of 258278-25-0, the publication is Angewandte Chemie, International Edition (2017), 56(33), 9833-9836, database is CAplus and MEDLINE.

Heterobiaryls are important pharmacophores that are challenging to prepare by traditional cross-coupling methods. An alternative approach is presented where pyridines and diazines are converted into heteroaryl phosphonium salts and coupled with aryl boronic acids. Nickel catalysts are unique for selective heteroaryl transfer, and the reaction has a broad substrate scope that includes complex pharmaceuticals. Phosphonium ions also display orthogonal reactivity in cross-couplings compared to halides, enabling chemoselective palladium- and nickel-catalyzed coupling sequences.

Angewandte Chemie, International Edition published new progress about 258278-25-0. 258278-25-0 belongs to imidazoles-derivatives, auxiliary class Achiral NHCs Ligands, name is 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride, and the molecular formula is C18H17N5O3, Computed Properties of 258278-25-0.

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

Joshi, Gayatri K. published the artcileImproved localized surface plasmon resonance biosensing sensitivity based on chemically-synthesized gold nanoprisms as plasmonic transducers, Recommanded Product: N-(2-(2-(2-(2-Aminoethoxy)ethoxy)ethoxy)ethyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide, the publication is Journal of Materials Chemistry (2012), 22(3), 923-931, database is CAplus.

Supporting substrate attached gold nanostructures display localized surface plasmon resonance (LSPR) properties at the visible and near-IR (NIR) wavelengths. The LSPR wavelength is very responsive to the refractive index of the surrounding medium, allowing simple label-free biosensing when biomols. are irreversibly adsorbed onto nanostructures. Herein, the authors show that chem. synthesized gold nanoprisms with 22 nm average edge lengths are very efficient plasmonic transducers for label-free biosensing. The LSPR properties of gold nanoprisms on silanized glass substrate were investigated and readily influenced by bulk refractive index changes and local changes very close to the sensing surface due to the analyte adsorption. The nanoprisms had a 583 nm/RIU (1.62 eV/RIU) refractive index sensitivity and a 4.9 figure of merit (FOM). In addition, the nanoprism surface was modified with straight chain alkanethiols. The LSPR wavelength (λ_max) of chemisorbed nanoprisms on glass was very sensitive to surface modification by straight chain alkanethiols and linearly red-shifted by 2.5 nm with every methylene unit of the alkanethiol chain. Importantly, the biotin functionalized nanoprisms displayed red-shifts in λ_max upon streptavidin (SA) binding. The lowest SA concentration was measured to be 50 pM, much lower than gold nanospheres, nanorods, bipyramids, and nanostars.

Journal of Materials Chemistry published new progress about 359860-27-8. 359860-27-8 belongs to imidazoles-derivatives, auxiliary class Other Aliphatic Heterocyclic,Chiral,Amine,Amide,Ether,Inhibitor, name is N-(2-(2-(2-(2-Aminoethoxy)ethoxy)ethoxy)ethyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide, and the molecular formula is C18H34N4O5S, Recommanded Product: N-(2-(2-(2-(2-Aminoethoxy)ethoxy)ethoxy)ethyl)-5-((3aS,4S,6aR)-2-oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanamide.

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

Deng, Xiaohu published the artcileCuI-catalyzed amination of arylhalides with guanidines or amidines: a facile synthesis of 1-H-2-substituted benzimidazoles, Product Details of C19H14N2, the publication is Journal of Organic Chemistry (2009), 74(15), 5742-5745, database is CAplus and MEDLINE.

CuI/N,N’-dimethylethylenediamine proves to be an efficient catalyst system for the amination of arylhalides with guanidines. The same catalyst system is then successfully applied to the one-step synthesis of 1-H-2-amino-benzimidazoles through tandem aminations of 1,2-dihaloarenes in modest yields. This methodol. is also applicable for the preparation of 1-H or 1-substituted 2-aryl- or 2-alkyl-benzimidazoles.

Journal of Organic Chemistry published new progress about 2622-67-5. 2622-67-5 belongs to imidazoles-derivatives, auxiliary class Benzimidazole,Benzene,Benzimidazole, name is 1,2-Diphenyl-1H-benzo[d]imidazole, and the molecular formula is C19H14N2, Product Details of C19H14N2.

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