Category: 21252-69-7

Bridge-functionalized bisimidazolium bromides as catalysts for the conversion of epoxides to cyclic carbonates with CO₂ was written by Li, Yuanhui;Dominelli, Bruno;Reich, Robert M.;Liu, Boping;Kuhn, Fritz E.. And the article was included in Catalysis Communications in 2019.Recommanded Product: 1-Octyl-1H-imidazole This article mentions the following:

Six novel bridge-functionalized bisimidazolium bromides were synthesized and applied as catalysts for the cycloaddition of carbon dioxide and epoxides to give cyclic carbonates. Addnl., the influence of the hydrogen-bond donors, the N-wing-tip-substituents and the chain length of the connecting carbon bridges on the catalytic activity were studied. Catalyst bis[(trimethylphenyl)imidazoliumyl]methylpropanoic acid dibromide proved to be slightly more active than the reference catalyst bis(octylimidazoliumyl)propanol dibromide for the addition of carbon dioxide to various epoxides and could be analogously recycled from propylene carbonate for at least six times without distinct loss of activity. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Recommanded Product: 1-Octyl-1H-imidazole).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Imidazole based anticancer drug find applications in cancer chemotherapy. It is used as buffer component for purification of the histidine tagged recombinant proteins in immobilized metal-affinity chromatography (IMAC).Recommanded Product: 1-Octyl-1H-imidazole

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Solvent Water Content as a Factor in the Design of Metal Ion Extraction Systems Employing Ionic Liquids was written by Hawkins, Cory A.;Rigney, Madison L.;Rud, Anna;Dietz, Mark L.. And the article was included in Solvent Extraction and Ion Exchange in 2018.SDS of cas: 21252-69-7 This article mentions the following:

In the extraction of strontium nitrate from aqueous nitric acid solutions into a series of hydrophobic N-(1-hydroxyalkyl)-N’-alkylimidazolium bis[(trifluoromethyl)sulfonyl]imides by dicyclohexano-18-crown-6, a correlation has been demonstrated between the conditional extraction constant of strontium (K’_ex,Sr) and the concentration of water in the equilibrated ionic liquid (IL) phase. Despite the absence of a hydroxyl group on the IL cation, essentially the same relationship is observed for the analogous N,N’-dialkylimidazolium ILs. In both instances, the correlation is attributed to the coextn. of the hydrated nitrate ion and its solvation by the hydrated diluent. Transitions of water in the attenuated total reflectance-IR spectra of the ILs are consistent with the existence of multiple states of water. The extraction efficiency for a given water content is greater for the ILs examined than for conventional solvents (i.e., n-alcs.). When coupled with existing knowledge of the factors influencing cation partitioning into ILs, these results provide insight into the IL structural characteristics required to effect efficient metal ion extraction from acidic media. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7SDS of cas: 21252-69-7).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.SDS of cas: 21252-69-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Structure of protic (HC_nImNTf₂, n = 0-12) and aprotic (C₁C_nImNTf₂, n = 1-12) imidazolium ionic liquids: A vibrational spectroscopic study was written by Moschovi, Anastasia Maria;Dracopoulos, Vassileios. And the article was included in Journal of Molecular Liquids in 2015.Synthetic Route of C11H20N2 This article mentions the following:

The interactions of alkyl substituted imidazolium bis(trifluoromethanesulfonyl)imide protic (PILs) HC_nImNTf₂ (n = 0-12) and aprotic ionic liquids (APILs) C₁C_nNTf₂ (n = 1-12) were studied using vibrational spectroscopy (FT-IR/ATR and FT-Raman). The effect of alkyl substituent length (n = 0-12) on both polar and non-polar regions is elucidated. A sponge like structure is proposed for both systems. The spectral characteristics show that there are certain structural differences between PILs and APILs. The well defined hydrogen bonding in PILs strongly affects the local structure of both the polar head (i.e., induction effect) and the side alkyl chain. The spectral findings tentatively suggest that nanosegregation occurs at shorter alkyl chains. In APILs the data correlated with the polar and non-polar regions are discussed on the basis of the proposed sponge like structure. The trans/cis ratio of the anion conformers is related to the dispersion of the average position of the anion over the cation. Also in the oily phase the local structure of the side chain shows certain differences compared to PIL systems. A tail coupling occurred (up to eight carbon atom alkyls) followed by decoupling in higher length tails in APILs indicating an increase of van der Waals forces between the chains. Moreover, we show that the enthalpy of conformational isomerism of the anion is also a good indicator in the case of APILs, regarding the relative magnitude of these interactions. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Synthetic Route of C11H20N2).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole derivatives generally have good solubility in protic solvents. Simple imidazole derivatives, such as 1H-imidazole, 2-methyl-1H-imidazole, and 1,2-dimethylimidazole, have very high solubility in water. Imidazole is incorporated into many important biological compounds. The most pervasive is the amino acid histidine, which has an imidazole side-chain. Histidine is present in many proteins and enzymes, e.g. by binding metal cofactors, as seen in hemoglobin.Synthetic Route of C11H20N2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Room-temperature silver-containing liquid metal salts with nitrate anions was written by Schaltin, Stijn;Brooks, Neil R.;Sniekers, Jeroen;Depuydt, Daphne;Van Meervelt, Luc;Binnemans, Koen;Fransaer, Jan. And the article was included in Physical Chemistry Chemical Physics in 2013.Reference of 21252-69-7 This article mentions the following:

The synthesis, structural, thermal and electrochem. properties of F-free Ag-containing ionic liquids are presented. The ionic liquid cations are formed by a Ag(I) ion surrounded by two 1-alkylimidazole ligands, with the counteranions being nitrate ions. Depending on the alkyl chain length, the complexes are liquids at room temperature or melting slightly above this. For the solid compounds it was possible to elucidate the structure by single crystal x-ray anal. The ionic liquids are electroactive, have good mass transport properties and can be used for the electrodeposition of Ag at high current densities. The thermal properties and stability of these compounds were tested by DSC and TGA. The viscosity of the ionic liquids follows a Vogel-Tamman-Fulcher relation as a function of temperature The electrochem. properties of the complexes were tested by cyclic voltammetry and the resulting electrodeposits were examined using SEM and at. force microscopy. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Reference of 21252-69-7).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. Imidazole has been usedin the lysis, wash and elution buffer for the purification of histidine tagged Sonic Hedgehog(shh-N) protein, in elution buffer in stepwise gradient for the purification of histidine tagged aldo keto reductases using nickel affinity chromatography, as a component of homogenization buffer for the purification of phagosomal compartments from dendritic cells.Reference of 21252-69-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Imidazolium Based Ionic Liquids: Impact of the Cation Symmetry and Alkyl Chain Length on the Enthalpy of Vaporization was written by Yermalayeu, Andrei V.;Zaitsau, Dzmitry H.;Loor, Manuel;Schaumann, Julian;Emel’yanenko, Vladimir N.;Schulz, Stephan;Verevkin, Sergey P.. And the article was included in Zeitschrift fuer Anorganische und Allgemeine Chemie in 2017.Synthetic Route of C11H20N2 This article mentions the following:

The vaporization thermodn. of sym. imidazolium based ionic liquids of the general formula [C_nC_nIm][Br] with the chains length n = 4, 5, 6, and 8 were investigated using a combination of DSC, TGA, and QCM methods with quantum chem. calculations Comparison of vaporization enthalpies for the sym. ([C_nC_nIm][Br]) and asym. imidazolium based ILs ([C_nmim][Br]) revealed a general trend with the lower vaporization enthalpies of the sym. species indicating a significant decrease of the Coulombic interactions affecting energetics of vaporization. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Synthetic Route of C11H20N2).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole based anticancer drug find applications in cancer chemotherapy. It is used as buffer component for purification of the histidine tagged recombinant proteins in immobilized metal-affinity chromatography (IMAC).Synthetic Route of C11H20N2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Influence of the Surface Chemistry of Metal-Organic Polyhedra in Their Assembly into Ultrathin Films for Gas Separation was written by Tejedor, Ines;Andres, Miguel A.;Carne-Sanchez, Arnau;Arjona, Monica;Perez-Miana, Marta;Sanchez-Lainez, Javier;Coronas, Joaquin;Fontaine, Philippe;Goldmann, Michel;Roubeau, Olivier;Maspoch, Daniel;Gascon, Ignacio. And the article was included in ACS Applied Materials & Interfaces in 2022.Formula: C11H20N2 This article mentions the following:

The formation of ultrathin films of Rh-based porous metal-organic polyhedra (Rh-MOPs) by the Langmuir-Blodgett method has been explored. Homogeneous and dense monolayer films were formed at the air-water interface either using two different coordinatively alkyl-functionalized Rh-MOPs (HRhMOP(diz)₁₂ and HRhMOP(oiz)₁₂) or by in situ incorporation of aliphatic chains to the axial sites of dirhodium paddlewheels of another Rh-MOP (OHRhMOP) at the air-liquid interface. All these Rh-MOP monolayers were successively deposited onto different substrates in order to obtain multilayer films with controllable thicknesses. Aliphatic chains were partially removed from HRhMOP(diz)₁₂ films post-synthetically by a simple acid treatment, resulting in a relevant modification of the film hydrophobicity. Moreover, the CO₂/N₂ separation performance of Rh-MOP-supported membranes was also evaluated, proving that they can be used as selective layers for efficient CO₂ separation In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Formula: C11H20N2).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole has become an important synthon in the development of new drugs. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Formula: C11H20N2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Strengthened adsorption and corrosion inhibition of new single imidazole-type ionic liquid molecules to copper surface in sulfuric acid solution by molecular aggregation was written by Shi, Yueting;Fu, Yan;Xu, Shenying;Huang, Haijun;Zhang, Shengtao;Wang, Zhenqiang;Li, Wenpo;Li, Hongru;Gao, Fang. And the article was included in Journal of Molecular Liquids in 2021.Recommanded Product: 21252-69-7 This article mentions the following:

This study proposes to use mol. aggregation method of organic ionic liquid mols. (OILMs) to intensify adsorption and corrosion inhibition to copper surface in sulfuric acid solution Three new single imidazole-type OILMs including long carbon chain were synthesized, which were characterized by different methods such as NMR (NMR) and elemental anal. The results suggest that the OILMs could process regular mol. assembly in sulfuric acid solution The formed OILMs aggregates have been shown dependence on the OILMs concentrations and aggregation time. The chem. adsorption of the OILMs aggregates on copper surface was demonstrated by various means including attenuated total reflection IR spectroscopy (ATR-IR), XPS, X-ray diffraction (XRD), and spectroscopic ellipsometry and contacting angles, and at. force microscopy (AFM) as well as SEM (SEM) imaging. Thus, the hydrophobic adsorption layers of the OILMs aggregates were yielded on copper surface. The electrochem. survey suggests that the OILMs aggregates present nice corrosion resistance effect to copper in sulfuric acid solution (the maximal corrosion inhibition efficiency, >93%). The results were further understood by the theor. simulation computation. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Recommanded Product: 21252-69-7).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Imidazole also acts as a microtubule destabilizing agents and inhibits topoisomerase and Cytochrome P450 Family 26 Subfamily A Member 1 (CYP26A1) enzymes.Recommanded Product: 21252-69-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Synthesis of novel cationic copolymer acrylamide/acrylic acid ester by single electron transfer living radical polymerization in aqueous solution was written by Ding, Wei;Liu, Kang;Luan, Huoxin;Yu, Tao;Qu, Guangmiao. And the article was included in Yingyong Huaxue in 2013.HPLC of Formula: 21252-69-7 This article mentions the following:

The imidazole, acrylonitrile, bromooctane were used to synthesize a new cationic polymerizable ionic liquid surfactant named chlorinated-1-octyl-3-(4-butylacrylate-based) imidazole (PMOIH₈). Using 2-chloropropylamide (MPC) as the initiator, Cu⁰ powder and tris-(2-dimethylamino ethyl) amine (Me₆-TREN) as the catalyst, a new kind of copolymer acrylamide/acrylic ester was synthesized via single electron transfer living radical polymerization (SET-LRP) of acrylamide with PMOIH₈. The resulting polymers were analyzed by FT-IR, MS and ¹H NMR, and the results showed that the polymers were target products. The relative mol. mass and the distribution of the resulting polymer were determined by GPC. The relative mol. mass of polymers is within the range of 2 脳 10³鈭?4 脳 10³, and the relative mol. mass distribution is within the range of 1.21鈭?.75. Various factors which might affect the SET-LRP such as catalyst and initiator were discussed. The results showed that as the amount of catalyst reduced, the polymerization rate decreased and the polymerization rate constant (k_p^app) reduced from 0.0168 min^-1 to 0.0065 min^-1, while the relative mol. mass distribution M_w/M_n increased from 1.25鈭?.71 to 1.32鈭?.75, and the initiator efficiency decreased, I_eff = 90.24%. As the amount of initiator increased, the relative mol. mass distribution of the resulting polymer was narrower with M_w/M_n reduced from 1.25鈭?.71 to 1.21鈭?.68, while the polymerization rate constant(k_p^app) increased from 0.0168 min^-1 to 0.0201 min^-1, and the initiator efficiency increased, I_eff = 93.17%. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7HPLC of Formula: 21252-69-7).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. 1H-imidazole is an imidazole tautomer which has the migrating hydrogen at position 1. It is a conjugate base of an imidazolium cation. It is a conjugate acid of an imidazolide. It is a tautomer of a 4H-imidazole. The pharmacophore of imidazole exists in bioactive compounds including amino acids, plant growth regulators and therapeutic agents.n increase of the alkyl chain length of the alcohols. HPLC of Formula: 21252-69-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Synthesis of polysiloxane random copolymers that contain quaternized imidazolium moieties was written by Ichikawa, Tsukasa;Nemoto, Nobukalsu. And the article was included in Kobunshi Ronbunshu in 2016.Electric Literature of C11H20N2 This article mentions the following:

Polysiloxane random copolymers that contain quaternized imidazolium salts ([PImn]Cl) (n is the number of methylene groups) were obtained by the quaternization reaction of poly[dimethylsiloxane-ran-(3-chloropropylmethylsiloxane)] (P1) with imidazole derivatives having different lengths of alkyl chains (Imn) at the 1-position. The introduction ratio of imidazolium salts into P1 was estimated to be from 93 to 100 mol % from ¹H NMR anal. The glass transition temperatures (T_gs) of [PImn]Cls were determined by differential scanning calorimetry (DSC). Of all the samples. [Plm5]Cl and [Plm6]|Cl had the lowest T_g of 14°C which is 12-15 K lower than the T_g of polysiloxane homopolymer having quaternized imidazolium salts without polydimethylsiloxane units. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Electric Literature of C11H20N2).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole is a heterocyclic compound with a five-membered planar ring. It is amphoteric and highly polar. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Electric Literature of C11H20N2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

A complex matrix characterization approach, applied to cigarette smoke, that integrates multiple analytical methods and compound identification strategies for non-targeted liquid chromatography with high-resolution mass spectrometry was written by Arndt, Daniel;Wachsmuth, Christian;Buchholz, Christoph;Bentley, Mark. And the article was included in Rapid Communications in Mass Spectrometry in 2020.Name: 1-Octyl-1H-imidazole This article mentions the following:

Rationale : For the characterization of the chem. composition of complex matrixes such as tobacco smoke, containing more than 6000 constituents, several anal. approaches have to be combined to increase compound coverage across the chem. space. Furthermore, the identification of unknown mols. requiring the implementation of addnl. confirmatory tools in the absence of reference standards, such as tandem mass spectrometry spectra comparisons and in silico prediction of mass spectra, is a major bottleneck. Methods : We applied a combination of four chromatog./ionization techniques (reversed-phase (RP) – heated electrospray ionization (HESI) in both pos. (+) and neg. (-) modes, RP – atm. pressure chem. ionization (APCI) in pos. mode, and hydrophilic interaction liquid chromatog. (HILIC) – HESI pos.) using a Thermo Q Exactive® liquid chromatog./high-resolution accurate mass spectrometry (LC/HRAM-MS) platform for the anal. of 3R4F-derived smoke. Compound identification was performed by using mass spectral libraries and in silico predicted fragments from multiple integrated databases. Results : A total of 331 compounds with semi-quant. estimates ≥100 ng per cigarette were identified, which were distributed within the known chem. space of tobacco smoke. The integration of multiple LC/HRAM-MS-based chromatog./ionization approaches combined with complementary compound identification strategies was key for maximizing the number of amenable compounds and for strengthening the level of identification confidence. A total of 50 novel compounds were identified as being present in tobacco smoke. In the absence of reference MS² spectra, in silico MS² spectra prediction gave a good indication for compound class and was used as an addnl. confirmatory tool for our integrated non-targeted screening (NTS) approach. Conclusions : This study presents a powerful chem. characterization approach that has been successfully applied for the identification of novel compounds in cigarette smoke. We believe that this innovative approach has general applicability and a huge potential benefit for the anal. of any complex matrixes. In the experiment, the researchers used many compounds, for example, 1-Octyl-1H-imidazole (cas: 21252-69-7Name: 1-Octyl-1H-imidazole).

1-Octyl-1H-imidazole (cas: 21252-69-7) belongs to imidazole derivatives. Imidazole is the basic core of some natural products such as histidine, purine, histamine and DNA based structures, etc. Among the different heterocyclic compounds, imidazole is better known due to its broad range of chemical and biological properties. Many drugs contain an imidazole ring, such as certain antifungal drugs, the nitroimidazole series of antibiotics, and the sedative midazolam.Name: 1-Octyl-1H-imidazole

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem