Category: 27231-36-3

Electric Literature of C8H8N2S. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: 2-Mercapto-5-methylbenzimidazole, is researched, Molecular C8H8N2S, CAS is 27231-36-3, about New Antimony(III) Bromide Complexes with Thioamides: Synthesis, Characterization, and Cytostatic Properties. Author is Ozturk, Ibrahim I.; Hadjikakou, Sotiris K.; Hadjiliadis, Nick; Kourkoumelis, Nikolaos; Kubicki, Maciej; Tasiopoulos, Anastasios J.; Scleiman, Hanadi; Barsan, Mirela M.; Butler, Ian S.; Balzarini, Jan.

New antimony(III) bromide complexes with the heterocyclic thioamides, thiourea (TU), 2-mercapto-1-methylimidazole (MMI), 2-mercaptobenzimidazole (MBZIM), 2-mercapto-5-methylbenzimidazole (MMBZIM), 5-ethoxy-2-mercaptobenzimidazole (EtMBZIM), 2-mercapto-3,4,5,6-tetrahydropyrimidine (tHPMT), 2-mercaptopyridine (PYT), 2-mercaptothiazolidine (MTZD), 3-methyl-2-mercaptobenzothiazole (MMBZT), and 2-mercaptopyrimidine (PMTH) [SbBr3(TU)2] (1), [SbBr3(MMI)2] (2), {[SbBr2(MBZIM)4]+[Br]-·H2O} (3), {[SbBr2(μ2-Br)(MMBZIM)2]2} (4), {[SbBr2(μ2-Br)(EtMBZIM)2]2·MeOH} (5), {[SbBr3(μ2-S-tHPMT)(tHPMT)]n} (6), {[SbBr2(μ2-Br)(PYT)2]n} (7), {[SbBr2(μ2-Br)(MTZD)2]n} (8), [SbBr3(MMBZT)2] (9), and {[SbBr5]2-[(PMTH2+)2]} (10) were synthesized and characterized by elemental anal., conductivity measurements, FTIR spectroscopy, FT-Raman spectroscopy, TG-DTA anal., and x-ray powder diffraction. The crystal structures of 3, 4, 5, 6, 7, 8, and 10 were also determined by x-ray diffraction. In 3, four sulfur atoms from thione ligands and two bromide ions form an octahedral (Oh) cationic [SbS4Br2]+ species in which the two bromide anions lie at axial positions. A third bromide counteranion neutralizes the whole complex. 4 And 5 are dimers, whereas 6, 7 and 8 are polymers, built up by monomeric units of square pyramidal (SP) geometry around the metal center, which were formed by two sulfur atoms of thioamide ligands and three bromide ions. Finally, 10 is ionic salt containing 1-dimensional polymeric network of {[SbBr5]2-}n anions and [(PMTH2+)2] countercations in the lattice. The complexes showed mostly a moderate cytostatic activity against a variety of tumor cell lines.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2-Mercapto-5-methylbenzimidazole( cas:27231-36-3 ) is researched.Computed Properties of C8H8N2S.Aslanidis, Paraskevas; Cox, Philip J.; Divanidis, Savvas; Tsipis, Athanassios C. published the article 《Copper(I) Halide Complexes with 1,3-Propanebis(diphenylphosphine) and Heterocyclic Thione Ligands: Crystal and Electronic Structures (DFT) of [CuCl(pymtH)(dppp)], [CuBr(pymtH)(dppp)], and [Cu(μ-I)(dppp)]2》 about this compound( cas:27231-36-3 ) in Inorganic Chemistry. Keywords: copper propanebisphosphine halo heterocyclic thione complex preparation; crystal structure copper propanebisphosphine halo heterocyclic thione complex; DFT MO calculation copper halo propanebisphosphine complex interaction pyrimidinethione. Let’s learn more about this compound (cas:27231-36-3).

Reaction of Cu(I) chloride or bromide with equimolar amounts of the diphos ligand 1,3-propanebis(diphenylphosphine) and a heterocyclic thione (L) in MeCN/MeOH solvent afforded mononuclear complexes [CuX(dppp)(L)] with the diphosphine ligand acting as a chelating ligand. In contrast, Cu(I) iodide under the same conditions gave dimeric [Cu(μ-I)(dppp)]2, which contains doubly bridging iodo ligands. The structures of three complexes, namely, [CuCl(pymtH)(dppp)] (pymtH = 2-pyrimidinethione), [CuBr(pymtH)(dppp)], and [Cu(μ-I)(dppp)]2, were established by single-crystal x-ray diffraction. D. functional calculations at the B3LYP level of theory provided a satisfactory description of the structural, bonding, electronic, and related properties of the [CuX(PH3)2] and [CuX(1,3-pdp)] (1,3-pdp = 1,3-propanediphosphine) complexes and their dimers along with their associations with the pyrimidine-2-thione (pymtH) ligand. The interaction of the pymtH ligand with the Cu(I) metal center in these complexes corresponds to loose associations, the computed interaction energies predicted to be ∼20 kcal/mol for all complexes in the series. The bonding mechanism of the thione ligand with the Cu(I) metal centers involves both a σ-dative and π-back-bonding components. The coordination of the pymtH ligand is further stabilized by X···H-N bond formation being more pronounced in the chloro than in the iodo derivatives The Cu-X bond also is a composite bond involving σ- and π-dative bonding components. Most important is the presence of π-type MOs delocalized over the entire four-membered Cu(μ-X)2Cu ring, which supports a ring current and could probably account for the nearly equivalent Cu-X bonds in the rhombus. Also, all [Cu(μ-X)(PH3)2]2 dimers exhibit a σ-type MO corresponding to weak Cu···Cu interactions supporting through-ring intermetallic interactions, which seems to be responsible for the stabilization of the otherwise unstable antiarom. Cu(μ-X)2Cu ring.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2-Mercapto-5-methylbenzimidazole( cas:27231-36-3 ) is researched.Synthetic Route of C8H8N2S.Raditoiu, Valentin; Wagner, Luminita; Raditoiu, Alina; Ardeleanu, Petrea; Grigoriu, Nicoleta; Tarabasanu-Mihaila, Corneliu published the article 《Heterocyclic dyes with condensed rings derived from 1,3-dihydro-2H-benzimidazole-2-thiones. Benzimidazo[2,1-b]naphtho[2,3-d]thiazole-7,12-diones》 about this compound( cas:27231-36-3 ) in Revista de Chimie (Bucharest, Romania). Keywords: benzimidazonaphthothiazoledione dye preparation chloronaphthoquinone cyclocondensation benzimidazothione. Let’s learn more about this compound (cas:27231-36-3).

Seven new benzimidazo[2,1-b]naphtho[2,3-d]thiazole-7,12-dione dyes have been synthesized by cyclocondensation of 2,3-dichloro-1,4-naphthoquinone with some 1,3-dihydro-2H-benzimidazole-2-thione derivatives The reaction products were purified and characterized by means of elemental anal., UV-VIS, IR, and 1H- and 13C-NMR spectra, and thermal anal. Structure-property relationships in the dyes are discussed with respect to the nature of the substituents in the benzimidazole moieties.

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COA of Formula: C8H8N2S. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-Mercapto-5-methylbenzimidazole, is researched, Molecular C8H8N2S, CAS is 27231-36-3, about New spectrophotometric method for the determination of Hg(II) in fish samples. Author is Martiniano, Lorena Carvalho; Bezerra, Cicero Welligton Brito; Marques, Edmar Pereira; Gouveia de Sousa, Antonio; Fernandes, Ridvan Nunes; Marques, Aldalea Lopes Brandes.

A simple, rapid, sensitive, and selective spectrophotometric method was developed for the determination of mercury at trace levels using 2-mercapto-5-methylbenzimidazole (MMBI). The color product (λmax = 320 nm) is formed in aqueous 0.04 M Britton-Robinson buffer pH 8.0 instantly and its absorbance remains stable for >24 h. Mercury nitrate dihydrate (Hg(NO3)2.2H2O) was used as standard analyte. The average molar absorption coefficient is 2.71 × 104 L/mol.cm. The chelate stoichiometric composition (Hg:MMBI) is 1:1. Considerable excesses of copper, zinc, lead, and cadmium did not interfere in the assay. The method allows determination of mercury in the range of 2 × 10-6 to 4 × 10-5 mol/L with good precision and accuracy; the detection limit was 9.9 × 10-7 mol Hg/L. The method was used for anal. of fish samples and the results were compared with at. absorption spectrometry data. The relative standard deviations for the analyzed samples were 7.2-33% (n = 5), while the Errors were 1.63-11.6.

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Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 2-Mercapto-5-methylbenzimidazole, is researched, Molecular C8H8N2S, CAS is 27231-36-3, about Corrosion inhibition of steel in crude oil storage tanks.Related Products of 27231-36-3.

The corrosion behavior of steel in water from certain oil fields with various organic inhibitors was studied by applying potentiodynamic technique at pH 5.9. The inhibitors which were used include 2-methylbenzimidazole (I), 2-mercaptobenzimidazole (II), 2-mercapto-5-methylbenzimidazole (III), and 2-mercaptothiazole (IV). The inhibiting efficiency of the different additives was evaluated from their anodic and cathodic polarization curves at different temperatures A comparative study of curve fitting procedures using the kinetic thermodn. model and those utilizing well-known adsorption isotherms was undertaken. Three types of isotherms were used, Langmuir, Frumkin and Flory-Huggins isotherm. The kinetic-thermodn. model and Flory-Huggins isotherms are more suitable to fit the data for the four inhibitors, at all applied temperatures From the values of binding constants, K, the order of inhibitor efficiency is: III > IV > II > I. And thus 2-mercapto-5-methylbenzimidazole was the most effective inhibitor. The thermodn. parameters obtained for all the compounds used showed low values of Hads, which indicates that the action of these inhibitors is phys. adsorptive in nature.

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Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Polymer Testing called High-density polyethylene as phase-change material: Long-term stability and aging, Author is Weingrill, H. M.; Resch-Fauster, K.; Lucyshyn, T.; Zauner, C., which mentions a compound: 27231-36-3, SMILESS is SC1=NC2=CC(C)=CC=C2N1, Molecular C8H8N2S, Recommanded Product: 27231-36-3.

Bulky high-d. polyethylene (HDPE) specimens containing different stabilization systems are exposed in air for up to 7200 h in the melt state to investigate the HDPE′s applicability as phase change material (PCM). Their thermo-oxidative stability is investigated. The maintenance of the storage capacity (heat of fusion) and the HDPE′s degradation behavior is monitored via Differential Scanning Calorimetry (DSC). Different aging phenomena of the thermo-oxidative exposure are investigated in more detail by means of Fourier-transform IR spectroscopy (FTIR) and polarized light microscopy (PLM). Only a small loss in the storage capacity upon thermo-oxidative exposure is detected. Therefore, HDPE proves to be a candidate material for polymeric PCM.

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Benzoxazole – Wikipedia,
Benzoxazole | C7H5NO – PubChem

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Mavrova, Anelia Ts.; Anichina, Kamelya K.; Vuchev, Dimitar I.; Tsenov, Jordan A.; Kondeva, Magdalena S.; Micheva, Mitka K. researched the compound: 2-Mercapto-5-methylbenzimidazole( cas:27231-36-3 ).Related Products of 27231-36-3.They published the article 《Synthesis and antitrichinellosis activity of some 2-substituted-[1,3]thiazolo[3,2-a]benzimidazol-3(2H)-ones》 about this compound( cas:27231-36-3 ) in Bioorganic & Medicinal Chemistry. Keywords: thiazolo benzimidazolone preparation Trichinella SAR. We’ll tell you more about this compound (cas:27231-36-3).

Some new thiazolo[3,2-a]benzimidazolone derivatives were synthesized using two methods. The structures of the synthesized compounds were proved by means of IR, 1H NMR and mass spectral data. Ab initio computations were performed in order to determine the electronic structure and geometry of the investigated mols. and to compare it to the geometry of albendazole. Experiments in vitro and in vivo were accomplished in order to identify the efficacy of the obtained thiazolobenzimidazolones against Trichinella spiralis. The effectiveness of compounds 4a-c in the intestinal phase of trichinellosis was 100% and in the muscle phase were 88% and 80% at a concentration of 100 mg/kg mw for the compounds 4a and 4c. The results of the hepatotoxicity test showed that the compounds 4a and 4b possess hepatotoxicity comparable to that of albendazole.

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Computed Properties of C8H8N2S. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: 2-Mercapto-5-methylbenzimidazole, is researched, Molecular C8H8N2S, CAS is 27231-36-3, about Toxicity Study of a Rubber Antioxidant, Mixture of 2-Mercaptomethylbenzimidazoles, by Repeated Oral Administration to Rats. Author is Saitoh, M.; Umemura, T.; Kawasaki, Y.; Momma, J.; Matsushima, Y.; Sakemi, K.; Isama, K.; Kitajima, S.; Ogawa, Y.; Hasegawa, R.; Suzuki, T.; Hayashi, M.; Inoue, T.; Ohno, Y.; Sofuni, T.; Kurokawa, Y.; Tsuda, M..

2-Mercaptobenzimidazole (2-MBI), a rubber antioxidant, is known to exhibit potent antithyroid toxicity in rats and is a candidate as an environmental endocrine disrupter. 2-Mercaptomethylbenzimidazoles (a 1:1 mixture of 4-Me and 5-Me isomers, MMBIs), are also employed industrially as rubber antioxidants and are suspected to exert antithyroid toxicity such as 2-MBI. In this investigation, acute and subacute oral toxicity studies of MMBIs in Wistar rats were conducted. The clin. signs of acute oral toxicity were observed including decreased spontaneous movement, a paralytic gait, salivation and lacrimation, and adoption of prone and lateral positions. The LD50 was estimated to be 330 mg/kg. In the subacute oral toxicity study, male and female rats were treated with MMBIs by gavage at doses of 0 (corn oil), 4, 20 and 100 mg/kg for 28 consecutive days followed by a 2-wk recovery period for the control and highest dose groups. Body weight and food consumption, clin. signs, organ weights, clin. biochem. and hematol. parameters including clotting times and micronuclei induction in bone marrow erythropoietic cells, and histopathol. were examined Relative organ weights of lung, liver and kidney, and serum cholesterol and phospholipid significantly increased in male rats treated with MMBIs at doses of 20 and 100 mg/kg. Male rats administered 100 mg/kg MMBIs exhibited a 1.8-fold increase in thyroid weight associated with histopathol. changes but not altered serum thyroid hormone levels. Female rats administered 100 mg MMBIs/kg exhibited significant increases of liver and kidney but not thyroid weights, and serum cholesterol level. The antithyroid toxicity of MMBIs in rats was estimated to be one-tenth that of 2-MBI. No-observed-effect levels for male and female rats were found to be 4 and 20 mg/kg, resp., in this subacute oral toxicity study.

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Aslanidis, P.; Cox, P. J.; Divanidis, S.; Karagiannidis, P. published the article 《Copper(I) halide complexes from cis-1,2-bis(diphenylphosphino) ethylene and some heterocyclic thiones》. Keywords: copper ethenediphosphine heterocyclic thione halo preparation; crystal structure copper ethenediphosphine triazolethione pyrimidinethione.They researched the compound: 2-Mercapto-5-methylbenzimidazole( cas:27231-36-3 ).Application In Synthesis of 2-Mercapto-5-methylbenzimidazole. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:27231-36-3) here.

Reaction of Cu(I) chloride or bromide with equimolar amounts of diphos (dppet), cis-1,2-bis(diphenylphosphino)ethylene and one of the heterocyclic thiones (L) pyridine-2-thione, pyrimidine-2-thione, 5-methyl-1,3,4-thiadiazole-2-thione, 4-methyl-5-trifluoromethyl-1,2,4-triazole-3-thione, benzoxazole-2-thione, or 5-methylbenzimidazole-2-thione in MeCN/MeOH afforded mononuclear complexes [CuX(dppet)(L)] with the diphosphine ligand acting as a chelating ligand. However, the same reaction carried out at higher temperatures proceeds, in some cases, with exclusion of the phosphine ligand from the coordination sphere leading to double-S-bridged dimers. In contrast, Cu(I) iodide under the same conditions gave the thione-free dimeric compound [CuI(dppet)]2 which contains double-bridging I atoms. A notable exception was for the reaction with 5-methyl-1,3,4-thiadiazole-2-thione (mtdztH) which, under the same conditions, gave rise to the unexpected, simultaneous formation of the monomer [CuI(dppet)(MeCN)] as well as the above mentioned dimeric [CuI(dppet)]2. Also treatment [CuX(dppet)(L)] with two equivalent of PPh3 was found to cause replacement of the diphos ligand, while substitution of the Cl atom under HCl elimination and formation of [Cu(dppet)(mftztH)2] occurred in the unique case of treating [CuCl(dppet)(mftztH)] with one addnl. equivalent of the same thione ligand. The structures of one representative for each of the above mentioned types of complexes, [CuBr(dppet)(mftztH)], [Cu(dppet)(mftztH)2], [Cu(μ-I)(dppet)]2·[CuI(dppet)(MeCN)] and [CuBr{μ-S(pymtH)}(pymtH)]2 were established by single-crystal x-ray diffraction.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2-Mercapto-5-methylbenzimidazole( cas:27231-36-3 ) is researched.Name: 2-Mercapto-5-methylbenzimidazole.Aslanidis, P.; Hadjikakou, S. K.; Karagiannidis, P.; Kojic-Prodic, B.; Luic, M. published the article 《Preparation and spectral studies of dinuclear mixed-ligand copper(I) complexes. The crystal structure of bis[μ-S(pyridine-2-thione)(tmtp)copper(I) bromide]》 about this compound( cas:27231-36-3 ) in Polyhedron. Keywords: crystal structure copper pyridinethione dinuclear complex; structure copper pyridinethione tolylphosphine dinuclear complex; copper thione tolylphosphine bromo dinuclear complex. Let’s learn more about this compound (cas:27231-36-3).

[Cu(tmtp)Br]n (tmtp = tri-m-tolylphosphine) reacts with heterocyclic thiones (L) [L = pyridine-2-thione (py2SH), 1,3-thiazolidine-2-thione (tzdtH), benz-1,3-imidazoline-2-thione (bzimtH2), benz-1,3-thiazoline-2-thione (bztzdtH), imidazoline-2-thione (imtH), benz-1,3-oxazoline-2-thione (bzoxtH2), 5-nitrobenz-1,3-imidazoline-2-thione (nbzimtH2), and 5-methylbenz-1,3-imidazoline-2-thione (mebzimtH2)] to give binuclear [Cu(tmtp)(L)Br]2. These complexes were characterized by various spectroscopic methods. The crystal structure of the pyridine-2-thione complex was determined by single-crystal x-ray diffraction methods. The mol. contains a planar Cu2S2 moiety with Cu-S bond lengths of 2.3348(9) and 2.4879(7) Å. The Cu-Br and Cu-P distances are 2.4929(1) and 2.2525(4) Å, resp., whereas the Cu…Cu separation is 2.6906(1) Å.

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