Author: Jessica.F

The author of 《Stereodefined Access to Lactams via Olefin Difunctionalization: Iridium Nitrenoids as a Motif of LUMO-Controlled Dipoles》 were Hong, Seung Youn; Chang, Sukbok. And the article was published in Journal of the American Chemical Society in 2019. HPLC of Formula: 530-62-1 The author mentioned the following in the article:

Reported herein is a general platform of a stereodefined access to γ-lactams via Cp*Ir-catalyzed olefin difunctionalization, where in situ generated Ir-nitrenoid is utilized as a key motif of 1,3-dipoles to enable amido transfer in a syn-selective manner. Computational studies suggested that the stereodefined process can be attributed to the proposed working mode of concerted [3+2] cyclization. Frontier MO (FMO) anal. implied that a low-lying LUMO (LUMO) of the Ir-imido fragment engages in the olefin interaction. Mechanistic understanding on the nitrene transfer process led us to develop mild catalytic protocols of stereoselective difunctionalization of alkenyl dioxazolones to furnish α-(haloalkyl)- or (oxyalkyl)lactam products which are of high synthetic and medicinal utility. Product stereochem. (threo and erythro) was found to be designated by the olefin geometry (E/Z) of substrates. In the part of experimental materials, we found many familiar compounds, such as Di(1H-imidazol-1-yl)methanone(cas: 530-62-1HPLC of Formula: 530-62-1)

Di(1H-imidazol-1-yl)methanone(cas: 530-62-1) is a peptide coupling reagent,it is used in the synthesis of peptides. Reacts readily with carboxylic acids to form acyl imidazoles; subsequent reaction with amines to form amides goes smoothly.HPLC of Formula: 530-62-1

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

The author of 《Effects of 1-butyl-3-methylimidazolium tetrafluoroborate and the oxygen concentration on the spontaneous combustion of coal》 were Xiao, Yang; Li, Da-Jiang; Lu, Hui-Fei; Yin, Lan; Shu, Chi-Min. And the article was published in Journal of Thermal Analysis and Calorimetry in 2019. Related Products of 174501-65-6 The author mentioned the following in the article:

Ionic liquids (ILs) are a type of environmentally friendly solvents. Several studies have proven that ILs can inhibit the spontaneous combustion of coal (SCC). In this study, a synchronous thermal analyzer was used to analyze the effects of the imidazolium-based IL [BMIM][BF4] on coal of three metamorphic grades. A coal sample exhibiting the optimal inhibiting result was selected to investigate the effect of the oxygen concentration on IL inhibition. The results revealed that the influence of IL on the mass loss process of the three metamorphic grades of coal varied considerably. However, the IL promoted the mass loss process in 1/3 coking coal and anthracite. The IL delayed the ignition temperature of lignite by 42°C, whereas those of 1/3 coking coal and anthracite were advanced by 10 and 8°C, resp. Furthermore, the initial exothermic temperature of the three treated coal samples was higher than those of the raw coal samples. Compared with the raw coal samples, the heat released per g of lignite, 1/3 coking coal, and anthracite was reduced by 1142, 353, and 226 J, resp. The results indicated that the IL had a prominent inhibiting effect on the exothermic properties of the three coal samples, and the inhibiting effect decreased with an increase in the metamorphic grade of coal. Moreover, the oxygen concentration did not alter the inhibition properties of the IL on the SCC. However, the inhibiting effect weakened as the oxygen concentration decreased. The results came from multiple reactions, including the reaction of 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6Related Products of 174501-65-6)

3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6) is a member of lonic liquids. Actually, lonic liquids as innovative fluids have received wide attention only during the past two decades. The number of SCI papers published on lonic liquids has exponentially increased from a few in 1996 to >5000 in 2016, exceeding the annual growth rates of other popular scientific areas. Related Products of 174501-65-6

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

《Densities, Ultrasonic Speeds, Viscosities, Refractive Indices, and Excess Properties of 1-Butyl-3-methylimidazolium Tetrafluoroborate + N-Methylacetamide Binary Mixtures at Different Temperatures》 was published in Journal of Chemical & Engineering Data in 2020. These research results belong to Chaudhary, Neha; Nain, Anil Kumar. COA of Formula: C8H15BF4N2 The article mentions the following:

The thermophys. properties, viz., densities, ρ, ultrasonic speeds, u, viscosities, η, and refractive indexes, nD, were measured for the binary liquid mixtures of 1-butyl-3-methylimidazolium tetrafluoroborate [Bmim][BF4] with N-methylacetamide [NMA] over the whole concentration range, including those of pure liquids, at temperatures T/K = 293.15-318.15 and at pressure p = 101 kPa. Exptl. data were used to determine the excess molar volume, VmE, excess isentropic compressibility, κsE, excess speed of sound, uE, excess molar isentropic compressibility, Ks, mE, deviations in viscosity Δη, and deviations in refractive index, ΔϕnD. These parameters were fitted to the Redlich-Kister type polynomial equation. The partial molar volumes and partial molar compressibilities and excess partial molar volumes and excess partial molar compressibilities over the entire range of mole fraction and at infinite dilution were also determined The observed neg. values of VmE, κsE, Ks, mE, and Δη and pos. values uEand ΔϕnD indicate the strong interactions between the component mols. of these mixtures The results came from multiple reactions, including the reaction of 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6COA of Formula: C8H15BF4N2)

3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6) is a member of lonic liquids. A multidisciplinary study on lonic liquids is emerging, including chemistry, materials science, chemical engineering, and environmental science. More specifically, some important fundamental viewpoints are now different from the original concepts, as insights into the nature of lonic liquids become deeper. For example, the physicochemical properties of lonic liquids are now recognized as ranging broadly from the oft quoted “nonvolatile, non-flammable, and air and water stable” to those that are distinctly volatile, flammable, and unstable. COA of Formula: C8H15BF4N2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

In 2022,Li, Yi; Guo, Chunjing; Chen, Qiang; Su, Yanguo; Guo, Huimin; Liu, Ruoyang; Sun, Changgang; Mi, Shuqi; Wang, Jinqiu; Chen, Daquan published an article in International Journal of Biological Macromolecules. The title of the article was 《Improvement of pneumonia by curcumin-loaded bionanosystems based on platycodon grandiflorum polysaccharides via calming cytokine storm》.Application In Synthesis of Di(1H-imidazol-1-yl)methanone The author mentioned the following in the article:

Pneumonia can lead to high morbidity and mortality secondary to uncontrolled inflammation of the lung tissue. Blocking cytokine storm storms may be the key to saving the life of patients with severe pneumonia. According to the medicinal guide theory of Traditional Chinese Medicine (TCM) and the inherent affinity with macrophages for the site of inflammation, we constructed the drug delivery platform (MNPs) derived from macrophage-membrane encapsulated reaction oxygen species (ROS)-responsive Platycodon grandiflorum polysaccharides (PGP) nanoparticles (PNPs) to calm the cytokine storm and improve lung inflammation. By loading the anti-inflammatory agent Curcumin (Cur), we demonstrated that MNPs@Cur significantly attenuated inflammation and cytokine storm syndrome in acute lung injury (ALI) mice by suppressing pro-inflammatory factor production and inflammatory cell infiltration. Interestingly, we observed that the PNPs also have potent pulmonary targeting ability compared to other polysaccharide carriers, which is in line with the medicinal guide theory of TCM. Our study revealed the rational design of drug delivery platforms to improve the treatment of lung injury, which inherits and develops the important theories of TCM through the perfect combination of guide theory and biomimetic nanotechnol. and provides the exptl. scientific basis for the clin. application of channel ushering drugs. The experimental process involved the reaction of Di(1H-imidazol-1-yl)methanone(cas: 530-62-1Application In Synthesis of Di(1H-imidazol-1-yl)methanone)

Di(1H-imidazol-1-yl)methanone(cas: 530-62-1) is a peptide coupling reagent,it is used in the synthesis of peptides. Reacts readily with carboxylic acids to form acyl imidazoles; subsequent reaction with amines to form amides goes smoothly.Application In Synthesis of Di(1H-imidazol-1-yl)methanone

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

HPLC of Formula: 16681-56-4In 2015 ,《1H-Pyrazolo[3,4-g]hexahydro-isoquinolines as potent GR antagonists with reduced hERG inhibition and an improved pharmacokinetic profile》 appeared in Bioorganic & Medicinal Chemistry Letters. The author of the article were Hunt, Hazel J.; Belanoff, Joseph K.; Golding, Emily; Gourdet, Benoit; Phillips, Timothy; Swift, Denise; Thomas, Jennifer; Unitt, John F.; Walters, Iain. The article conveys some information:

The authors report the further optimization of the series 1H-pyrazolo[3,4-g]hexahydro-isoquinoline sulfonamides as GR antagonists. By incorporating a heteroaryl ketone group at the ring junction, the authors have obtained compounds with excellent functional GR antagonism. Optimization of the sulfonamide substituent has provided compounds with a very desirable overall profile, e.g. I, including minimal hERG activity, good bioavailability and in vivo efficacy. After reading the article, we found that the author used 2-Bromo-1H-imidazole(cas: 16681-56-4HPLC of Formula: 16681-56-4)

2-Bromo-1H-imidazole(cas: 16681-56-4) is a member of imidazole. Its exclusive structural characteristics with enviable electron-rich features are favorable for imidazole-based fused heterocycles to bind efficiently with an array of enzymes and receptors in biological systems through various weak interactions like hydrogen bonds, ion-dipole, cation-π, π-π stacking, coordination, Van der Waals forces, hydrophobic effects, etc., and therefore they demonstrate widespread bioactivities. HPLC of Formula: 16681-56-4

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Computed Properties of C8H15BF4N2In 2020 ,《Microscopic understanding of the effect of ionic liquid on protein from molecular simulation studies》 appeared in Journal of Physical Chemistry B. The author of the article were Ghanta, Krishna Prasad; Pal, Tamisra; Mondal, Sandip; Bandyopadhyay, Sanjoy. The article conveys some information:

We have performed mol. dynamics (MD) simulations of the protein α-lactalbumin in aqueous solution containing the ionic liquid (IL) 1-butyl-3-Me imidazolium tetrafluoroborate ([BMIM][BF4]) as the cosolvent at different concentrations Attempts have been made to obtain quant. understanding of the effects of the IL on the conformational features of the protein as well as the distributions of the IL and water around it. The calculations revealed enhanced rigidity of the protein with reduced conformational fluctuations and increasingly correlated local motions in the presence of the IL. Nonuniform relative population of the BMIM+ and BF4- ions at the protein surface with respect to that in the bulk solution has been observed It is demonstrated that exchange of water by the IL around the protein results in rearrangement of the hydrogen bond network at the interface with breaking of protein-water hydrogen bonds and formation of protein-IL hydrogen bonds. Importantly, it is found that the protein forms increased number of stronger salt bridges in the presence of IL. This shows that the formation of a greater number of such stronger salt bridges is the origin behind the enhanced rigidity of the protein in the presence of the IL. The experimental part of the paper was very detailed, including the reaction process of 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6Computed Properties of C8H15BF4N2)

3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6) is a member of lonic liquids. Actually, lonic liquids as innovative fluids have received wide attention only during the past two decades. The number of SCI papers published on lonic liquids has exponentially increased from a few in 1996 to >5000 in 2016, exceeding the annual growth rates of other popular scientific areas. Computed Properties of C8H15BF4N2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

《Modulating the Bonding Properties of N-Heterocyclic Carbenes (NHCs): A Systematic Charge-Displacement Analysis》 was published in Chemistry – A European Journal in 2017. These research results belong to Gaggioli, Carlo Alberto; Bistoni, Giovanni; Ciancaleoni, Gianluca; Tarantelli, Francesco; Belpassi, Leonardo; Belanzoni, Paola. Product Details of 852445-84-2 The article mentions the following:

In view of their intensive use as ligands in many reactions catalyzed by transition-metal complexes, modulation of the bonding properties of N-heterocyclic carbenes (NHCs) on a rational basis is highly desirable, which should enable optimization of current applications or even promote new functions. In this paper, we provide a quant. anal. of the chem. bond between a metal fragment AuCl and a series of 29 different NHCs in [(NHC)AuCl] complexes. NHCs electronic properties are modified through: (i) variation of the groups attached to the NHC nitrogen atoms or backbone; (ii) change of unsaturation/size of the NHC ring; (iii) inclusion of paracyclophane moieties; or (iv) heteroatom substitution on the NHC ring. For evaluating the donation and back-donation components of the Dewar-Chatt-Duncanson (DCD) model in the NHC-AuCl bond, we apply the charge-displacement (CD) anal. within the NOCV (natural orbitals for chem. valence) framework, a methodol. that avoids the constraint of using symmetrized structures. We show that modulation of the NHC bonding properties requires substantial modification of their structure, such as, for instance, insertion of two ketone groups into the NHC backbone (which enhances the π back-donation bond component and introduces an effective electronic communication within the NHC ring) or replacement of a nitrogen atom in the ring with an sp3 or sp2 carbon atom (which increases and decreases the π back-donation bond component, resp.). We extend our investigation by quant. comparing the NHC electronic structures for a subset of 13 NHCs in [(NHC)PPh] adducts, the 31P NMR chem. shift values of which are exptl. available. The latter have been considered as a suitable tool for measuring the NHCs π acceptor properties [Bertrand et al., Angew. Chem. Int. Ed. 2013, 52, 2939-2943]. We show that information obtained using the metal fragment can be transferred to the PPh moiety and vice versa. However, the 31P NMR chem. shift values only qual. correlate with the π acceptor properties of the NHCs, with the stronger π acidic carbenes as the most outliners. The results came from multiple reactions, including the reaction of Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)(cas: 852445-84-2Product Details of 852445-84-2)

Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)(cas: 852445-84-2) belongs to imidazoles.Although other azole heterocycles are ubiquitous in a wide range of biologically active natural products, imidazole rings occur predominantly in the natural amino acid histidine. Product Details of 852445-84-2 In addition, imidazole rings are part of unnatural cyclic peptides and are used as ester isosteres in peptidomimetic studies.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

HPLC of Formula: 258278-25-0On March 29, 2021, Mazars, Francois; Hrubaru, Madalina; Tumanov, Nikolay; Wouters, Johan; Delaude, Lionel published an article in European Journal of Organic Chemistry. The article was 《Synthesis of Azolium-2-dithiocarboxylate Zwitterions under Mild, Aerobic Conditions》. The article mentions the following:

Twelve imidazolium-, imidazolinium-, or benzimidazolium-2-dithiocarboxylate zwitterions with aliphatic or aromatic substituents on their nitrogen atoms, including four new unsym. 1-alkyl-3-arylimidazolium derivatives, were obtained in high yields (62-96%) upon reaction of azolium salts with CS2 and Cs2CO3 in acetonitrile at room temperature Compared to the previous strategies devised for the synthesis of NHC·CS2 betaines, this novel procedure relied on an innocuous, weak base and could be applied under mild aerobic conditions. All the new compounds were fully characterized by various anal. techniques and the mol. structures of two of them were determined by XRD anal. An associative mechanism involving the concerted reaction of the azolium salts with both CS2 and CO32- was tentatively proposed to account for the formation of the zwitterionic adducts without the intervention of free carbenes. This would explain the good results obtained with a weak inorganic base that lacks the strength needed to deprotonate the azolium salt substrates. In the experiment, the researchers used many compounds, for example, 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride(cas: 258278-25-0HPLC of Formula: 258278-25-0)

1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride(cas: 258278-25-0) may be used as a precursor to the free carbene 1,3-bis(2,6-diisopropylphenyl)-2-imidazolidinylidene, and also used as an in situ formed catalyst in a variety of reactions, e.g. amination, Heck coupling reaction, the ring-opening metathesis polymerization (ROMP), hydrogenation.HPLC of Formula: 258278-25-0In addition, it can efficiently catalyze the Suzuki-Miyaura coupling of aryl chlorides with aryl boronic acids.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Reference of Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)On March 27, 2013, Visbal, Renso; Ospino, Isaura; Lopez-de-Luzuriaga, Jose M.; Laguna, Antonio; Gimeno, M. Concepcion published an article in Journal of the American Chemical Society. The article was 《N-Heterocyclic Carbene Ligands as Modulators of Luminescence in Three-Coordinate Gold(I) Complexes with Spectacular Quantum Yields》. The article mentions the following:

The first three-coordinate gold(I) N-heterocyclic carbene (NHC) complexes have been prepared with the nido-carborane diphosphine. The complexes are brightly luminescent and present very high quantum yield values. The carbene ligand is able to modulate the energy of the emissions and, depending upon the substituent, the luminescence changes from blue to green. Theor. calculations corroborate that the emissions are phosphorescence and arise from charge transfer (LML’CT) transitions from nido-carborane ligand (L) to metal/ligand group “”gold(I)-NHC ligand”” (ML’).Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)(cas: 852445-84-2Reference of Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)) was used in this study.

Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)(cas: 852445-84-2) belongs to imidazoles.Imidazole rings are also present in imidazole ring alkaloids, which are potential therapeutics for thrombosis, cancer and inflammatory diseases.Reference of Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I) Although other azole heterocycles are ubiquitous in a wide range of biologically active natural products, imidazole rings occur predominantly in the natural amino acid histidine.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

In 2012,European Journal of Inorganic Chemistry included an article by Landers, Brant; Navarro, Oscar. Recommanded Product: 852445-84-2. The article was titled 《Microwave-Assisted Synthesis of (N-Heterocyclic carbene)MCl Complexes of Group 11 Metals》. The information in the text is summarized as follows:

The use of microwave heating for the synthesis of (N-heterocyclic carbene)-bearing complexes of Cu, Ag and Au allows for a drastic reduction of the reaction times required by conventional heating, while affording comparable or better yields of the desired complexes. In addition to this study using Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I), there are many other studies that have used Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)(cas: 852445-84-2Recommanded Product: 852445-84-2) was used in this study.

Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)(cas: 852445-84-2) belongs to imidazoles.Although other azole heterocycles are ubiquitous in a wide range of biologically active natural products, imidazole rings occur predominantly in the natural amino acid histidine. In addition, imidazole rings are part of unnatural cyclic peptides and are used as ester isosteres in peptidomimetic studies. Recommanded Product: 852445-84-2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem