Author: Jessica.F

In 2022,Chemical Communications (Cambridge, United Kingdom) included an article by Huang, Shuai; Zhang, Gao-Peng; Jiang, Yang-Jie; Yu, Fei-Le; Ding, Chang-Hua; Hou, Xue-Long. Recommanded Product: 258278-25-0. The article was titled 《Pd-Catalyzed umpolung asymmetric allylic alkylation of hydrazones to vicinal tertiary and quaternary chiral carbon centers》. The information in the text is summarized as follows:

Diastereo- and enantioselective construction of vicinal tertiary and quaternary carbon centers is a great challenge in synthetic chem. Herein, a facile and efficient protocol to construct unsaturated azo compounds I [R1 = Ph, 4-FC6H4, 2-naphthyl, 2-thienyl, etc., R2 = Me; R1 = Ph, R2 = Et; R1R2 = (CH2)5; R3 = Ph, 4-MeOC6H4, 1,3-benzodioxol-5-yl, 2-furyl, etc.] with vicinal tertiary and quaternary chiral carbon centers in high yields with high regio-, diastereo- and enantioselectivities via Pd-catalyzed umpolung asym. allylic alkylation of hydrazones II with monosubstituted allylic pivalates R3CH:CHCH2OC(O)Bu-t by using Kundig-type chiral N-heterocyclic carbene as the ligand is reported. The control experiments revealed that the reaction proceeds via the inner-sphere mechanism. 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: 258278-25-0Recommanded Product: 258278-25-0)

1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride(cas: 258278-25-0) has been employed in an efficient, one-pot synthesis of N-heterocyclic carbene-allylpalladium complexes.Recommanded Product: 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

The author of 《Mizoroki-Heck Cross-Coupling of Acrylate Derivatives with Aryl Halides Catalyzed by Palladate Pre-Catalysts》 were Islam, Mohammad Shahidul; Nahra, Fady; Tzouras, Nikolaos V.; Barakat, Assem; Cazin, Catherine S. J.; Nolan, Steven P.; Al-Majid, Abdullah Mohammed. And the article was published in European Journal of Inorganic Chemistry in 2019. Safety of 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride The author mentioned the following in the article:

The Mizoroki-Heck (MH) reaction involving aryl halides with various acrylates and acrylamide was studied using air and moisture-stable imidazolium-based palladate pre-catalysts for the synthesis of internal alkenes RHC=CH(R1)(C(O)R2) [R = Ph, 4-MeC6H4, 4-MeOC6H4, etc.; R1 = H, Me, 4-MeOC6H4CH2, etc.; R2 = OMe, On-Bu, NH2, etc.]. These pre-catalysts were converted into Pd-NHC species (NHC = N-heterocyclic carbene) under catalytic conditions and were capable of facilitating the Mizoroki-Heck reaction of aryl halides with various acrylates. The effects of solvent, catalyst loading, temperature and bases on the reaction outcome were investigated. Various coupling partners were tolerated under the optimal reaction conditions catalyzed by palladate [SIPr·H][Pd(η3-2-Me-allyl)Cl2]. The efficiency of the optimized synthetic methodol. was tested on various aryl halides and substituted acrylates as well as acrylamides. The MH reaction yielded the coupled products in good to excellent isolated yields (up to 98%). The experimental part of the paper was very detailed, including the reaction process of 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride(cas: 258278-25-0Safety of 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride)

1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride(cas: 258278-25-0) has been employed in an efficient, one-pot synthesis of N-heterocyclic carbene-allylpalladium complexes.Safety of 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chlorideIn addition, it can efficiently catalyze the Suzuki-Miyaura coupling of aryl chlorides with aryl boronic acids.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

In 1989,Danovich, D. K.; Turchaninov, V. K. published 《Basicity of azoles. 2. Relationship with the energy of nonbonding electrons and reorganization energy of the π- and σ-electronic systems of the base upon ionization and protonation》.Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya published the findings.SDS of cas: 16681-56-4 The information in the text is summarized as follows:

Linear relationships between proton affinity (AM1) and ionization potential (Green’s function AM1 quantum-chem. method) were observed for series of imidazoles and pyrazoles and explained with a thermodn. cycle which took explicit account of the differences in electronic reorganization (relaxation) energy of the π- and σ-electronic systems of the azole cation and cation radical relative to the neutral mol. The results came from multiple reactions, including the reaction of 2-Bromo-1H-imidazole(cas: 16681-56-4SDS of cas: 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. SDS of cas: 16681-56-4

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

In 2018,Bente, Stefanie; Kampert, Florian; Tan, Tristan T. Y.; Hahn, F. Ekkehardt published 《Site-selective metallation of dicarbene precursors》.Chemical Communications (Cambridge, United Kingdom) published the findings.Formula: C7H5ClN2 The information in the text is summarized as follows:

An imidazolium/2-chlorobenzimidazole bis-NHC precursor was reacted with Ag2O followed by transmetalation with [AuCl(THT)] to give the Au-NHC complex via metalation of the imidazolium site, while the reaction of the same bis-NHC precursor with [Pd(PPh3)4] yields exclusively the azolato complex by oxidative addition of the C2-Cl bond to Pd0. Both complexes were converted into the heterobimetallic Au/Pd-complex by reaction with [Pd(PPh)3]4 (for the NHC complex) or Ag2O/[AuCl(THT)] (for the azolato complex), resp. The experimental part of the paper was very detailed, including the reaction process of 2-Chloro-1H-benzo[d]imidazole(cas: 4857-06-1Formula: C7H5ClN2)

2-Chloro-1H-benzo[d]imidazole(cas: 4857-06-1) binds to monoclonal antibodies, inhibiting their binding to their corresponding antigens. This activity may be due to its ability to bind covalently with amino groups on proteins and other molecules.Formula: C7H5ClN2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

In 2019,Multiple sclerosis (Houndmills, Basingstoke, England) included an article by Couloume, Laura; Barbin, Laetitia; Leray, Emmanuelle; Wiertlewski, Sandrine; Le Page, Emmanuelle; Kerbrat, Anne; Ory, Solenn; Le Port, Damien; Edan, Gilles; Laplaud, David-Axel; Michel, Laure. Related Products of 58-85-5. The article was titled 《High-dose biotin in progressive multiple sclerosis: A prospective study of 178 patients in routine clinical practice.》. The information in the text is summarized as follows:

BACKGROUND: A recent controlled trial suggested that high-dose biotin supplementation reverses disability progression in patients with progressive multiple sclerosis. OBJECTIVE: To analyze the impact of high-dose biotin in routine clinical practice on disability progression at 12 months. METHODS: Progressive multiple sclerosis patients who started high-dose biotin at Nantes or Rennes Hospital between 3 June 2015 and 15 September 2017 were included in this prospective study. Disability outcome measures, patient-reported outcome measures, relapses, magnetic resonance imaging (MRI) data, and adverse events were collected at baseline, 6, and 12 months. RESULTS: A total of 178 patients were included. At baseline, patients were 52.0 ± 9.4 years old, mean Expanded Disability Status Scale (EDSS) score was 6.1 ± 1.3, mean disease duration was 16.9 ± 9.5 years. At 12 months, 3.8% of the patients had an improved EDSS score. Regarding the other disability scales, scores either remained stable or increased significantly. In total, 47.4% of the patients described stability, 27.6% felt an improvement, and 25% described a worsening. Four patients (2.2%) had a relapse. Of the 74 patients (41.6%) who underwent an MRI, 20 (27.0%) had new T2 lesions, 8 (10.8%) had gadolinium-enhancing lesions. Twenty-five (14%) reported adverse event. CONCLUSION: In this study, high-dose biotin did not seem to be associated with a clear improvement in disability. The experimental part of the paper was very detailed, including the reaction process of 5-((3aS,4S,6aR)-2-Oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanoic acid(cas: 58-85-5Related Products of 58-85-5)

5-((3aS,4S,6aR)-2-Oxohexahydro-1H-thieno[3,4-d]imidazol-4-yl)pentanoic acid(cas: 58-85-5) may be used to elute proteins from avidin/streptavidin resins. It has been used for culturing of oligodendrocytes.Related Products of 58-85-5 And it has been used for blocking endogenous biotin during immunohistology procedures.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

《Silica Sulfuric Acid/Ethylene Glycol: An Efficient Eco-Friendly Catalyst for One-Pot Synthesis of New Benzo[4,5]imidazo[1,2-a]pyrimidines》 was published in Organic Preparations and Procedures International in 2020. These research results belong to Basyouni, Wahid M.; Abdelazeem, Nagwa M.; Abbas, Samir Y.; El-Bayouki, Khairy A. M.; El-kady, Mohamed Y.. Related Products of 934-32-7 The article mentions the following:

A novel catalyst (SSA/ethylene glycol) for the efficient synthesis of new benzo[4,5]imidazo[1,2-a]pyrimidine derivatives I (R = H, acetyl; R1 = Me, Ph; R2 = Ph, 3-bromophenyl, thiophen-2-yl, etc.) in high yield and good purity was demonstrated. The reaction was achieved via three-component condensation reactions. SSA/ethylene glycol offers several advantages for the preparation of novel heterocycles I. Among these are simplicity, mild reaction conditions, and little environmental impact. The investigations will spur the exploration of this useful reagent combination in the synthesis of new heterocyclic systems. The experimental part of the paper was very detailed, including the reaction process of 1H-Benzo[d]imidazol-2-amine(cas: 934-32-7Related Products of 934-32-7)

1H-Benzo[d]imidazol-2-amine(cas: 934-32-7) can be used in the hydrolysis of a choline carbonate. It was also used in the synthesis of imidazo[1,2-a]benzimidazoles.Related Products of 934-32-7

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

《Flammability hazard analysis of imidazolium-based ionic liquid binary mixtures under high temperatures》 was written by Li, Yongheng; Pan, Yong; Huang, Gaosheng; Wang, Qingguo; Wei, Qian; Jiang, Juncheng. Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate And the article was included in Journal of Loss Prevention in the Process Industries in 2020. The article conveys some information:

Ionic liquid (IL) mixtures are promising because they can optimize the involved properties according to industrial needs. It has already been demonstrated that IL flammability is due mainly to IL decomposition generating flammable substances. Four different ILs, 1-Butylimidazolium tetrafluoroborate ([BIM][BF4]), 1-butylimidazolium nitrate ([BIM][NO3]), 1-butyl-3-methylimidazolium tetrafluoroborate([BMIM][BF4]), and 1-butyl-3-methylimidazolium nitrate ([BMIM][NO3]), were selected as the parent salts to form the different imidazolium-based IL binary mixtures These mixtures were tested via isothermal thermogravimetric analyzer (TGA) at different temperatures (120, 150, 180, 210, and 240°C), then tested by the flash point analyzer after isothermal heating pretreatment at the above temperatures Results show that the mixtures’ flash point values decrease with the heating temperature increase. Vaporization of the IL mixtures’ decomposition products results in a higher concentration of flammable gases and a flash point decrease, which lead to the flammability hazard increasing. Moreover, results show that the flash points of the studied binary imidazolium IL mixtures are more similar to those of the more unstable IL in their parent ILs. Also, the flammability hazard of IL binary mixtures may obviously increase under the high temperature environment for a long time. In the experiment, the researchers used many compounds, for example, 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate(cas: 174501-65-6Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate)

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. Recommanded Product: 3-Butyl-1-methyl-1H-imidazol-3-ium tetrafluoroborate

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

Mukherjee, Shuvam; Bera, Kaushik; Jana, Subrata; Pal, Saikat; Anand, Namrata; Ray, Bimalendu; Ray, Sayani published an article in 2021. The article was titled 《Conjugation reaction with ferulic acid boosts the antioxidant property of arabinogalactan-protein and enhances its ability to form complex with β-lactoglobulin》, and you may find the article in International Journal of Biological Macromolecules.Related Products of 530-62-1 The information in the text is summarized as follows:

Ferulic acid was chem. grafted onto the arabinogalactan protein of Aegle marmelos fruit gum using 1,1′-carbonyldiimidazole as coupling reagent. Thus, grafted polysaccharides with different degrees of substitution were prepared and then characterized by gas chromatog./mass spectrometry, size exclusion chromatog., and UV-visible, infra-red, and NMR spectroscopic investigations. Fluorescence spectroscopic investigation showed hydrophobic microdomain formation in grafted polymers. The antioxidant activities of the derivatives, as determined by the 2,2-diphenyl-1-(2,4,6-trinitrophenyl) hydrazyl radical assay, were strong and increases with increasing the degree of feruloylation. Compared to parental arabinogalactan protein (K = 2.38 x 106 M-1), these grafted polymers bind more strongly with β-lactoglobulin (K = 11.4 x 106 M-1 and 8.19 x 106 M-1). Given that gum polysaccharides are valuable component in functional foods, synthesis of antioxidative graft polymer possessing good compatibility with β-lactoglobulin may have important implication. The experimental part of the paper was very detailed, including the reaction process of Di(1H-imidazol-1-yl)methanone(cas: 530-62-1Related Products of 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.Related Products of 530-62-1

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

In 2013,Chemical Communications (Cambridge, United Kingdom) included an article by Visbal, Renso; Laguna, Antonio; Gimeno, M. Concepcion. Electric Literature of C27H38AuClN2. The article was titled 《Simple and efficient synthesis of [MCl(NHC)] (M = Au, Ag) complexes》. The information in the text is summarized as follows:

A facile and efficient synthetic route leading to catalytically relevant N-heterocyclic carbene (NHC) gold complexes is described. The method consists of one pot synthesis starting from readily available imidazolium salts and [AuCl(tht)], in the presence of K2CO3. Using the same protocol NHC silver complexes have been synthesized starting from AgNO3. In the experimental materials used by the author, we found Chloro{1,3-bis[2,6-bis(1-methylethyl)phenyl]-4,5-dihydroimidazol-2-ylidene}gold(I)(cas: 852445-84-2Electric Literature of C27H38AuClN2)

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 part of unnatural cyclic peptides and are used as ester isosteres in peptidomimetic studies.
However, the application of imidazoles is not limited to the field of peptides and peptidomimetics. Electric Literature of C27H38AuClN2

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem

In 2019,Chemical Communications (Cambridge, United Kingdom) included an article by Lee, Shao-Chi; Guo, Lin; Rueping, Magnus. Electric Literature of C27H39ClN2. The article was titled 《Nickel-catalyzed exo-selective hydroacylation/Suzuki cross-coupling reaction》. The information in the text is summarized as follows:

The first nickel-catalyzed intramol. hydroacylation/Suzuki cross coupling cascade of phenylboronic acid neopentyl glycol esters I (R = Ph, anthracen-9-yl, thiophen-2-yl, etc.) with a broad range of o-allylbenzaldehydes 2-CH2=CHCH2-4-R3-5-R2-6-R1C6HCHO (R1 = H, R2 = H, OMe; R1R2 = CH=CHCH=CH; R3 = H, OMe, Me, F) has been developed. This strategy shows high regioselectivity and step economy in the construction of two C-C bonds via aldehyde C-H bond activation, affording valuable indanones II with high efficiency. In the experiment, the researchers used 1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride(cas: 258278-25-0Electric Literature of C27H39ClN2)

1,3-Bis(2,6-diisopropylphenyl)-4,5-dihydro-1H-imidazol-3-ium chloride(cas: 258278-25-0) has been employed in an efficient, one-pot synthesis of N-heterocyclic carbene-allylpalladium complexes.Electric Literature of C27H39ClN2In addition, it can efficiently catalyze the Suzuki-Miyaura coupling of aryl chlorides with aryl boronic acids.

Referemce:
Imidazole – Wikipedia,
Imidazole | C3H4N2 – PubChem