Category: 110-03-2

Name: 2,5-Dimethyl-2,5-hexanediolIn 2020, Maekawa, Hiroyuki;Kudo, Hiroto;Watanabe, Takeo;Yamamoto, Hiroki;Okamoto, Kazumasa;Kozawa, Takahiro published 《Higher sensitive extreme ultraviolet (euv) resist materials derived from p-t-butylcalix[n]arenes (n = 4 and 8)》. 《Journal of Photopolymer Science and Technology》published the findings. The article contains the following contents:

We examined the synthesis, phys. properties, and resist properties of the various polymers and an oligomer containing fixed hole derived from calixarenes. By the condensation reaction of p-t-butylcalix[n]arene (n = 4 and 8) with 1,4-dichloro-2-oxabutane (DCB) and 2,5-dibromoacetyloxy-2,5-dimethylhexane (DBH), the soluble polymers poly(BCA[8]-co-DCB), poly(BCA[8]-co-DBH), and poly(BCA[4]-co-DCB), and an oligomer BCA[4]-DBH were obtained. They have good phys. properties (solubility, film-forming ability, high thermal stability), excellent thickness loss property, and good aciddeprotection reactivity upon ultra-violet (UV) irradiation The resist-sensitivity in an extreme UV (EUV) exposure tool indicated that poly(BCA[8]-co-DBH) and BCA[4]- DBH were good candidate to offer higher resolution resist pattern, i.e., E₀ = 5.0 mJ/cm² [poly(BCA[8[Bracket (R)[Bracket (R)-co-DBH and 0.8 mJ/cm² (BCA[4]-DBH). The experimental procedure involved many compounds, such as 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) on heteropoly acid catalyzed dehydration yields cyclic ethers via stereospecific intramolecular SN2 mechanism. It reacts with nitriles in concentrated sulfuric acid to yield Δ1-pyrrolines.Name: 2,5-Dimethyl-2,5-hexanediol

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Stock, Christian;Brueckner, Reinhard published 《Mild and High-Yielding Molybdenum(VI) Dichloride Dioxide-Catalyzed Formation of Mono-, Di-, Tri-, and Tetracarbamates from Alcohols and Aromatic or Aliphatic Isocyanates》. The research results were published in《Advanced Synthesis & Catalysis》 in 2012.Synthetic Route of C8H18O2 The article conveys some information:

Both molybdenum(VI) dichloride dioxide (MoO₂Cl₂) and its DMF (DMF) complex catalyze the addition of alcs. to isocyanates giving carbamates. Most additions proceed to completion at room temperature within 20 min using as little as 0.1 mol% of the catalyst when working on a 1-mmol scale or just 100 ppm working on a 20-mmol scale. Sterically encumbered substrates reacted to completion when 1 mol% of the catalyst was employed. Diols, triols, and tetraols reacted with monoisocyanates likewise, as did monofunctional alcs. and diisocyanates. These pairings furnished di-, tri-, tetra-, and dicarbamates, resp. Reactants, which were poorly soluble in CH₂Cl₂ at room temperature required elevating the temperature and possibly choosing a higher-boiling solvent (ClCH₂CH₂Cl, DMF) as well. Additions of diols to diisocyanates were feasible, too, giving polycarbamates as we presume.2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) were involved in the experimental procedure.

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) on heteropoly acid catalyzed dehydration yields cyclic ethers via stereospecific intramolecular SN2 mechanism. It reacts with nitriles in concentrated sulfuric acid to yield Δ1-pyrrolines.Synthetic Route of C8H18O2

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Dong, Kaiwu;Sang, Rui;Liu, Jie;Razzaq, Rauf;Franke, Robert;Jackstell, Ralf;Beller, Matthias published 《Palladium-Catalyzed Carbonylation of sec- and tert-Alcohols》 in 2017. The article was appeared in 《Angewandte Chemie, International Edition》. They have made some progress in their research.Safety of 2,5-Dimethyl-2,5-hexanediol The article mentions the following:

A general palladium-catalyzed synthesis of linear esters directly from sec- and tert-alcs. is described. Compared to the classic Koch-Haaf reaction, which leads to branched products, this new transformation gives the corresponding linear esters in high yields and selectivity. Key for this protocol is the use of an advanced palladium catalyst system with py^tbpx as the ligand. A variety of aliphatic and benzylic alcs. can be directly used and the catalyst efficiency for the benchmark reaction is outstanding (turnover number up to 89 000). To complete the study, the researchers used 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) on heteropoly acid catalyzed dehydration yields cyclic ethers via stereospecific intramolecular SN2 mechanism. It reacts with nitriles in concentrated sulfuric acid to yield Δ1-pyrrolines.Safety of 2,5-Dimethyl-2,5-hexanediol

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Eggink, P. M.;Maliepaard, C.;Tikunov, Y.;Haanstra, J. P. W.;Bovy, A. G.;Visser, R. G. F. published 《A taste of sweet pepper: Volatile and non-volatile chemical composition of fresh sweet pepper (Capsicum annuum) in relation to sensory evaluation of taste》 in 2012. The article was appeared in 《Food Chemistry》. They have made some progress in their research.Application of 110-03-2 The article mentions the following:

In this study volatile and non-volatile compounds, as well as some breeding parameters, were measured in mature fruits of elite sweet pepper (Capsicum annuum) lines and hybrids from a com. breeding program, several cultivated genotypes and one gene bank accession. In addition, all genotypes were evaluated for taste by a trained descriptive sensory expert panel. Metabolic contrasts between genotypes were caused by clusters of volatile and non-volatile compounds, which could be related to metabolic pathways and common biochem. precursors. Clusters of phenolic derivatives, higher alkanes, sesquiterpenes and lipid derived volatiles formed the major determinants of the genotypic differences. Flavor was described with the use of 14 taste attributes, of which the texture related attributes and the sweet-sour contrast were the most discriminatory factors. The attributes juiciness, toughness, crunchiness, stickiness, sweetness, aroma, sourness and fruity/apple taste could be significantly predicted with combined volatile and non-volatile data. Fructose and (E)-2-hexen-1-ol were highly correlated with aroma, fruity/apple taste and sweetness. New relations were found for fruity/apple taste and sweetness with the compounds p-menth-1-en-9-al, (E)-β-ocimene, (Z)-2-penten-1-ol and (E)-geranylacetone. Based on the overall biochem. and sensory results, the perspectives for flavor improvement by breeding are discussed.2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) were involved in the experimental procedure.

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) on heteropoly acid catalyzed dehydration yields cyclic ethers via stereospecific intramolecular SN2 mechanism. It reacts with nitriles in concentrated sulfuric acid to yield Δ1-pyrrolines.Application of 110-03-2

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Quality Control of 2,5-Dimethyl-2,5-hexanediol《New insights into the survival mechanisms of rifampicin-resistant Mycobacterium tuberculosis》 was published in 2016. The authors were Loots, Du Toit, and the article was included in《Journal of Antimicrobial Chemotherapy》. The author mentioned the following in the article:

Rifampicin is considered the most important antibiotic for treating TB, but unfortunately Mycobacterium tuberculosis is rapidly developing resistance to this drug. Despite the fervent research efforts to date, TB is still a major global problem, and hence new approaches are necessary to better characterize this disease, especially the mechanisms relating to drug resistance. Using a two-dimensional GC-coupled time-of-flight MS metabolomics approach, the most important metabolite markers characterizing rifampicin-resistant M. tuberculosis were identified. The metabolite markers identified indicate instability in rifampicin-resistant M. tuberculosis mRNA, induced by the rpoB mutation. This results in a total depletion of aconitic acid, due to a shift in aconitase functionality towards mRNA binding and stability, and away from energy production and growth, and a subsequent increased dependency on alternative energy sources, fatty acids in particular. A number of other metabolic changes were observed, confirming an addnl. survival response for maintaining/remodelling the cell wall. This study shows the value of a metabolomics approach to biol. studies in a quest to better understand disease-causing organisms and their tolerance to existing medications, which would in the future undoubtedly assist in the development of alternative treatment approaches. The experimental procedure involved many compounds, such as 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.Quality Control of 2,5-Dimethyl-2,5-hexanediol

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Lomas, John S. published 《¹H NMR spectra of butane-1,4-diol and other 1,4-diols: DFT calculation of shifts and coupling constants》 in 2014. The article was appeared in 《Magnetic Resonance in Chemistry》. They have made some progress in their research.Name: 2,5-Dimethyl-2,5-hexanediol The article mentions the following:

The proton NMR spectra of butane-1,4-diol, pentane-1,4-diol, (S,S)-hexane-2,5-diol, 2,5-dimethylhexane-2,5-diol and cyclohexane-1,4-diols (cis and trans) in benzene and some other solvents were analyzed. The conformer distribution and the NMR shifts of these diols in benzene were computed from the d. functional theory, the solvent being included by the integral-equation-formalism polarizable continuum model implemented in Gaussian 09. Relative Gibbs energies of all conformers are calculated at the Perdew, Burke and Ernzerhof (PBE)0/6-311+G(d,p) level and NMR shifts by the gauge-including AO method with the PBE0/6-311+G(d,p) geometry and the cc-pVTZ basis set. Vicinal three-bond coupling constants for the acyclic diols are calculated from the relative conformer populations, the geometries and generalized Karplus equations developed by Altona’s group; these correlate well with the exptl. values. The solvent dependence of coupling constants for butane-1,4-diol is attributed to conformational change. Coupling constants for the rigid cyclohexane-1,4-diols do not change with solvent and are readily explained in terms of their geometries. The NMR shifts of hydrogen-bonded protons in individual conformers of alkane-1,n-diols show a very rough correlation with the OH···OH distances. The computed overall NMR shifts for CH protons in 1,2-diols, 1,3-diols and 1,4-diols are systematically high but correlate very well with the exptl. values, with a gradient of 1.07 ± 0.01; those for OH protons correlate less well. Copyright © 2014 John Wiley and Sons, Ltd. And 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) was used in the research process.

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.Name: 2,5-Dimethyl-2,5-hexanediol

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Electric Literature of C8H18O2《Evaluation of TOPKAT, Toxtree, and Derek Nexus in Silico Models for Ocular Irritation and Development of a Knowledge-Based Framework To Improve the Prediction of Severe Irritation》 was published in 2016. The authors were Bhhatarai, Barun;Wilson, Daniel M.;Parks, Amanda K.;Carney, Edward W.;Spencer, Pamela J., and the article was included in《Chemical Research in Toxicology》. The author mentioned the following in the article:

Assessment of ocular irritation is an essential component of any risk assessment. A number of (Q)SARs and expert systems have been developed and are described in the literature. Here, the authors focus on three in silico models (TOPKAT, BfR rulebase implemented in Toxtree, and Derek Nexus) and evaluate their performance using 1644 inhouse and 123 European Center for Toxicol. and Ecotoxicol. of Chems. (ECETOC) compounds with existing in vivo ocular irritation classification data. Overall, the in silico models performed poorly. The best consensus predictions of severe ocular irritants were 52 and 65% for the inhouse and ECETOC compounds, resp. The prediction performance was improved by designing a knowledge-based chem. profiling framework that incorporated physicochem. properties and electrophilic reactivity mechanisms. The utility of the framework was assessed by applying it to the same test sets and three addnl. publicly available in vitro irritation data sets. The prediction of severe ocular irritants was improved to 73-77% if compounds were filtered on the basis of AlogP_MR (hydrophobicity with molar refractivity). The predictivity increased to 74-80% for compounds capable of preferentially undergoing hard electrophilic reactions, such as Schiff base formation and acylation. This research highlights the need for reliable ocular irritation models to be developed that take into account mechanisms of action and individual structural classes. It also demonstrates the value of profiling compounds with respect to their chem. reactivity and physicochem. properties that, in combination with existing models, results in better predictions for severe irritants. The experimental procedure involved many compounds, such as 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) .

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.Electric Literature of C8H18O2

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SDS of cas: 110-03-2In 2020, Duffy, Ian R.;Vasdev, Neil;Dahl, Kenneth published 《Copper(I)-Mediated ¹¹C-Carboxylation of (Hetero)arylstannanes》. 《ACS Omega》published the findings. The article contains the following contents:

A novel copper-mediated carboxylation strategy of aryl- and heteroaryl-stannanes was described. The method served as a mild (i.e., 1 atm) carboxylation method using stable carbon dioxide and was transferable as a radiosynthetic approach for carbon-11-labeled aromatic and heteroaromatic carboxylic acids using sub-stoichiometric quantities of [¹¹C]CO₂. The methodol. was applied to the radiosynthesis of the retinoid X receptor agonist, [¹¹C]bexarotene, with a decay-corrected radiochem. yield of 32 ± 5% and molar activity of 38 ± 23 GBq/μmol (n = 3).2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) were involved in the experimental procedure.

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) on heteropoly acid catalyzed dehydration yields cyclic ethers via stereospecific intramolecular SN2 mechanism. It reacts with nitriles in concentrated sulfuric acid to yield Δ1-pyrrolines.SDS of cas: 110-03-2

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Sun, Jing;Huang, Qinyi;Li, Fang;Liu, Lingtao;Han, Fang;Su, Xiurong published 《Application of electronic nose and GC-MS to differentiate volatiles of soybean oils prepared with different temperature conditions》 in 2013. The article was appeared in 《Zhongguo Liangyou Xuebao》. They have made some progress in their research.Safety of 2,5-Dimethyl-2,5-hexanediol The article mentions the following:

In order to establish rapid detection technol. and ensure the safety of edible oil, investigations were carried out to explore the relationship between soybean oil volatiles and temperature conditions. Chem. sensor technol. and headspace-solid phase micro-extraction (HS-SPME) coupled with gas chromatog.-mass spectrometry (GC-MS) were used to analyze the volatiles of soybean oil with different temperature conditions. The results showed that chem. sensor can be sensitive to detect the odor changes of soybean oil in the heating process. Fresh, 150°C, 180°C and 220°C soybean oil volatiles were significantly different by PCA and I. DA methods. There were 27, 60, 100 and 115 kinds of volatile compounds detected from fresh, 150°C, 180°C and 220°C soybean oil, resp. Among these compounds, most of them were hydrocarbons, aldehydes, ketones, ethers, esters, acids, heterocyclic compounds, and hydro-peroxides. The content of hydroperoxides in fresh soybean oil was higher than other samples. Ketones and alcs. with oil incense were the main volatiles of soybean oil at 150°C. Aldehydes and heterocyclic compounds were the main volatiles of 180°C and 220°C soybean oil, and they produce coke flavor, roasted flavor also endanger human health. And 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) was used in the research process.

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) was used in the synthesis of six- and seven-membered heterocyclic boron compounds containing intramolecular N-B bond.Safety of 2,5-Dimethyl-2,5-hexanediol

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HPLC of Formula: 110-03-2In 2019, Bhaladhare, Sachin;Kim, Soeun;Carter, Kenneth R. published 《Mechanical Properties and Moisture Transport Behavior of Acid-Sensitive Hydrogels》. 《ACS Applied Polymer Materials》published the findings. The article contains the following contents:

Thin hydrogel films containing the acid sensitive cross-linker 2,5-dimethyl-2,5-hexanediol dimethacrylate (DHDMA) were synthesized as part of a larger project to create protective layers against chem. and biol. (CB) threats. In order to operate efficiently as fabric coatings, the mech. and moisture vapor transport properties of these materials must be understood. The hydrogels were composed primarily of poly(ethylene glycol) dimethacrylate (PEGDMA) and 2-hydroxyethyl methacrylate (HEMA) and were prepared by free radical crosslinking polymerization The influence of different compositions of DHDMA, PEGDMA, and HEMA on the moisture vapor transmission rate (MVTR), mech. properties, and swelling properties of PEGDMA/DHDMA/HEMA copolymer hydrogels has been investigated. The characterization by Fourier transform IR (FTIR) spectroscopy confirmed the presence of all monomers used in the gel structure. The hydrogels showed high MVTR, which are comparable to the widely accepted breathable membrane of Gore-Tex fabric and expanded polytetrafluoroethylene (ePTFE). The swelling data indicated that the equilibrium water content depends on the composition of hydrogels. It was found that addition of HEMA into the PEGDMA-based hydrogels was very helpful to improve the swelling properties but decrease in water contact angle. Rheol. study of hydrogels showed that the hydrogels are very stiff and their stiffness increases with increasing PEGDMA content in the hydrogels. And 2,5-Dimethyl-2,5-hexanediol (cas: 110-03-2) was used in the research process.

2,5-Dimethyl-2,5-hexanediol(cas:110-03-2) on heteropoly acid catalyzed dehydration yields cyclic ethers via stereospecific intramolecular SN2 mechanism. It reacts with nitriles in concentrated sulfuric acid to yield Δ1-pyrrolines.HPLC of Formula: 110-03-2

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