Category: 112-63-0

Aneja, Meenakshi; Kothari, Seema; Banerji, Kalyan K. published the artcile< Correlation analysis of reactivity in the oxidation of substituted benzaldehydes by pyridinium hydrobromide perbromide>, Electric Literature of 112-63-0, the main research area is correlation analysis reactivity oxidation benzaldehyde pyridinium hydrobromide perbromide; LFER reactivity oxidation benzaldehyde pyridinium hydrobromide perbromide.

The oxidation of benzaldehyde and 35 monosubstituted benzaldehydes by pyridinium hydrobromide perbromide (PHPB) in aqueous acetic acid gives the corresponding benzoic acids. The reaction is first order with respect to each of the benzaldehydes and PHPB. Addition of pyridinium bromide has no effect on the rate of oxidation The oxidation of [2H]benzaldehyde (PhCDO) indicated the presence of a substantial kinetic isotope effect. The effect of solvent composition indicated that the reaction rate increases with increase in the polarity of the solvent. The rates of oxidation of meta- and para-substituted benzaldehydes were correlated in terms of Charton’s triparametric LDR equation whereas those of ortho-substituted benzaldehydes were correlated with a tetraparametric LDRS equation. The oxidations of para- and ortho-substituted benzaldehydes are more susceptible to the delocalization effect while the oxidation of meta-substituted compounds displays a greater dependence on the field effect. The pos. value of η suggests an electron-deficient reaction center in the rate-determining step. The reaction is subjected to steric hindrance by the ortho substituents.

Journal of Physical Organic Chemistry published new progress about Abstraction reaction (rate determining hydride). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tsebriienko, Tamara; Popov, Anatoli I. published the artcile< Effect of Poly(Titanium Oxide) on the Viscoelastic and Thermophysical Properties of Interpenetrating Polymer Networks>, Quality Control of 112-63-0, the main research area is polytitanium oxide interpenetrating polymer network viscoelastic thermophys property.

The influence of poly(titanium oxide) obtained using the sol-gel method in 2-hydroxyethyl methacrylate medium on the viscoelastic and thermophys. properties of interpenetrating polymer networks (IPNs) based on crosslinked polyurethane (PU) and poly(hydroxyethyl methacrylate) (PHEMA) was studied. It was found that both the initial (IPNs) and organo-inorganic interpenetrating polymer networks (OI IPNs) have a two-phase structure by using methods of dynamic mech. anal. (DMA) and differential scanning calorimetry (DSC). The differential scanning calorimetry methods and SEM showed that the presence of poly(titanium oxide) increases the compatibility of the components of IPNs. It was found that an increase in poly(titanium oxide) content leads to a decrease in the intensity of the relaxation maximum for PHEMA phase and an increase in the effective crosslinking d. due to the partial grafting of the inorganic component to acrylate. It was shown that the topol. of poly(titanium oxide) structure has a significant effect on the relaxation behavior of OI IPNs samples. According to SEM, a uniform distribution of the inorganic component in the polymer matrix is observed without significant aggregation.

Crystals published new progress about Complex modulus, tan δ. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tagat, Jayaram R.; McCombie, Stuart W.; Nazareno, Dennis; Labroli, Marc A.; Xiao, Yushi; Steensma, Ruo W.; Strizki, Julie M.; Baroudy, Bahige M.; Cox, Kathleen; Lachowicz, Jean; Varty, Geoffrey; Watkins, Robert published the artcile< Piperazine-Based CCR5 Antagonists as HIV-1 Inhibitors. IV. Discovery of 1-[(4,6-Dimethyl-5-pyrimidinyl)carbonyl]- 4-[4-{2-methoxy-1(R)-4-(trifluoromethyl)phenyl}ethyl-3(S)-methyl-1-piperazinyl]- 4-methylpiperidine (Sch-417690/Sch-D), a Potent, Highly Selective, and Orally Bioavailable CCR5 Antagonist>, Computed Properties of 112-63-0, the main research area is CCR5 antagonist antiaids AIDS HIV1.

The nature and the size of the benzylic substituent are shown to be the key to controlling receptor selectivity (CCR5 vs. M1, M2) and potency in the title compounds Optimization of the lead benzylic Me compound 3 led to the methoxymethyl analog 30, which had excellent receptor selectivity and oral bioavailability in rats and monkeys. Compound 30 (Sch-417690/Sch-D), a potent inhibitor of HIV-1 entry into target cells, is currently in clin. trials.

Journal of Medicinal Chemistry published new progress about AIDS (disease). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Computed Properties of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Chen, Huan; Zeng, Guanghong; Wang, Zhiqiang; Zhang, Xi published the artcile< To Construct ""Ion Traps"" for Enhancing the Permselectivity and Permeability of Polyelectrolyte Multilayer Films>, Reference of 112-63-0, the main research area is ion trap permselectivity permeability polyelectrolyte multilayer film.

We introduced single-charged mols. into layer-by-layer film of polymers by mixing polyelectrolyte and single-charged mols. with an appropriate ratio to form polymer complex and then deposition in alternation with counter-polyelectrolyte. By immersing the layer-by-layer film into aqueous solution of electrolytes, the single-charged mols. could be released from the layer-by-layer film. An interesting finding is the releasing of the single-charged mols. gave the multilayer film the permselectivity. For example, cations would be trapped and anions be repelled if pos.-charged mols. were used. Multilayer films able to trap either cations or anions could be fabricated, depending on the nature of single-charged template mols. used. Thus, the ion permselectivity of multilayer film was enhanced. Moreover, the permeability of the film was also dramatically increased, suggesting the potential application of layer-by-layer films as highly efficient ion-permselective membranes.

Macromolecules published new progress about Fluorescence. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Bellucci, Christina; Gualtieri, Fulvio; Chiarini, Alberto published the artcile< Negative inotropic activity of para-substituted diethyl benzylphosphonates related to fostedil. Part 3>, Related Products of 112-63-0, the main research area is benzylphosphonate diethyl preparation neg inotropic; calcium channel blocker benzylphosphonate derivative; MSBAR antihypertensive benzylphosphonate derivative; fostedil analog neg inotropic.

Di-Et benzylphosphonates 4-RC6H4CH2P(O)(OEt)2 (R = H, Me, NO2, Br, F, NH2, SO2Me, etc.), related to the calcium antagonist di-Et 4-(2-benzothiazolyl)benzylphosphonate (fostedil), produce a dose-dependent neg. inotropic effect on left atrial muscle isolated from guinea pig heart. Some of the compounds are equipotent or slightly more potent than fostedil and diltiazem taken as reference drugs. Structure-activity relationships are discussed.

European Journal of Medicinal Chemistry published new progress about Antihypertensives. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Related Products of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Molnar, Istvan Gabor; Gilmour, Ryan published the artcile< Catalytic Difluorination of Olefins>, Reference of 112-63-0, the main research area is vicinal difluorination olefin iodotoluene catalyst.

Mol. editing with fluorine is a validated strategy for modulating the structure and function of organic systems. In the current arsenal of catalytic dihalogenation technologies, the direct generation of the vicinal difluoride moiety from simple olefins without a prefunctionalization step remains conspicuously absent. Herein we report a catalytic, vicinal difluorination of olefins displaying broad functional group tolerance, using inexpensive p-iodotoluene as the catalyst. Preliminary efforts toward the development of an enantioselective variant are also disclosed.

Journal of the American Chemical Society published new progress about Alkenes Role: RCT (Reactant), RACT (Reactant or Reagent). 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhang, Xiaoyuan; Sarathy, S. Mani published the artcile< High-Temperature Pyrolysis and Combustion of C5-C19 Fatty Acid Methyl Esters (FAMEs): A Lumped Kinetic Modeling Study>, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate, the main research area is pyrolysis combustion fatty acid methyl ester lumped kinetic model.

In the effort to mitigate the depletion of fossil fuels and climate change, biodiesels are considered to be one of the most suitable substitutes for petro-diesel in compression ignition engine applications. As a follow up to prior modeling studies for gasoline and jet surrogate fuel components (Zhang, X.; Mani Sarathy, S. Fuel, 2021, 286, 119361), this work proposes a lumped kinetic model for both saturated and unsaturated C5-C19 fatty acid Me esters (FAMEs) based on the same methodol. The present lumped model includes 52 FAME fuel components, covering a wide range of biodiesel surrogate fuel components, as well as components typically found in biodiesels. This methodol. decouples the combustion of FAME fuels into two stages: the pyrolysis of fuel mols. and the oxidation of pyrolysis intermediates. Lumped reaction steps are used to describe the (oxidative) pyrolysis of each fuel mol., while a detailed model (Aramcomech 2.0) is adopted as the base mechanism to describe the subsequent conversion of these key intermediates. Rate rules adopted for all the FAME fuels are consistent. The present lumped model is validated against exptl. data from 20 pure FAMEs and six diesel/biodiesel surrogates, including around 130 sets of validation data. In general, the present lumped model satisfactorily captures most of these validation targets. This lumped model performs comparably with the detailed models developed in the literature under combustion conditions. Combined with the lumped model for 50 hydrocarbon fuels developed in previous work by this group, the lumped kinetic model for FAME fuels developed here can be used to predict the pyrolysis and combustion chem. of diesel/biodiesel surrogates in CFD simulations after necessary model reduction for the base model. Also, the stoichiometric parameters of the lumped reactions for various pure FAMEs can be used as the database for data science study in FGMech development for real biodiesels.

Energy & Fuels published new progress about Biodiesel fuel. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Name: (9Z,12Z)-Methyl octadeca-9,12-dienoate.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Zhang, Ting; Guo, Sheng; Niu, Yang; Huang, Kaidi; Bu, Fanshu; Ren, Hui; Zhang, Yiying; Shang, Erxin; Duan, Jin-ao; Qian, Dawei published the artcile< The influence of essential oils from ZhaLi NuSi Prescription on the pharmacokinetics of its non-volatile components in normal rats>, Quality Control of 112-63-0, the main research area is essential oil pharmacokinetic herbs nonvolatile component cerebral infarction; UPLC-MS/MS; ZhaLi NuSi prescription (ZLNS); pharmacokinetics.

Hui Medicine ZhaLi NuSi Prescription (ZLNS) is described in “”Hui Hui Prescription “” and it has been used to treat cerebral infarction in Hui Region, China. In this study, a rapid and reliable ultra-performance liquid chromatog. coupled with mass spectrometry (UPLC-MS/MS) method was established and applied to simultaneously determine geniposidic acid, oxypaeoniflorin, hydroxysafflor yellow A, caffeic acid, magnoflorine, paeoniflorin, ferulic acid, β-ecdysterone, icariin, rhein, and baohuoside I in rat plasma. The pharmacokinetic parameters of these components and the influence of essential oils (EOs) on them were investigated in normal rats. The results showed that the pharmacokinetic parameters (AUC0 – t, AUC0 – ∞, t1/2, tmax, cmax) of the aforementioned compounds were significantly changed after co-administering with ZLNS EO. The AUC values of oxypaeoniflorin, paeoniflorin, ferulic acid, and baohuoside I with EOs were decreased significantly. This is the first report for the comparative pharmacokinetic study of ZLNS bioactive components in normal rats, which may provide the basis for drug interaction study in vivo and insight into their clin. applications.

Biomedical Chromatography published new progress about Brain infarction. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Quality Control of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Schön, R published the artcile< [Newborn mass-screening programme for histidinaemia: increased efficiency through selective thin-layer chromatography (author's transl)].>, Reference of 112-63-0, the main research area is .

Histidinaemia, detected on urinary screening in cases which had not been discovered by neonatal blood screening induced us to lower the control limit for histidine from 6 to 4 mg/dl. This was possible by the development of a thin-layer chromatographic control method for the Guthrie test. The combination of thin-layer chromatography (TLC) and the Guthrie test (GT) proved to be considerably more efficient than the Guthrie test alone: among 44,510 newborn infants tested in the first six months of 1975 twice as many cases of histidinaemia were found (TLC + GT 6, GT 3) in spite of a gready lowered control rate (TLC + GT 0.4%, GT 2.4%). Of 87,729 newborn infants tested in 1975, 9 cases of histidinaemia were detected (incidence: 1 in 9,748). Only 4 of these infants showed initial blood levels of larger than or equal to 6 mg/dl. 5 children with histidinaemia, 3 with an initial level of 4 mg/dl and one each with 5 and 8 mg/dl, respectively, had to be put on a histidine-restricted diet becuase the blood histidine level was constantly elevated above 8 mg/dl. The further course of histidinaemia does not appear to correlated with the height of the initial blood histidine level.

Wiener klinische Wochenschrift published new progress about 112-63-0. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Reference of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics

Tian, Hongli; Shao, Yuewen; Liang, Chuanfei; Xu, Qing; Zhang, Lijun; Zhang, Shu; Liu, Shuhua; Hu, Xun published the artcile< Sulfated attapulgite for catalyzing the conversion of furfuryl alcohol to ethyl levulinate: Impacts of sulfonation on structural transformation and evolution of acidic sites on the catalyst>, Electric Literature of 112-63-0, the main research area is ethyl levulinate furfuryl alc sulfated attapulgite sulfonation catalyst.

Attapulgite (ATTP) is an abundant natural magnesium aluminosilicate mineral that can be used as support for manufacturing cost-effective solid acid catalysts. This study mainly focuses on structural change of ATTP and the formation of Bronsted and Lewis acid sites during sulfonation in H2SO4. The results indicate that the sulfonation leads to the drastic change of the crystal phases as sulfuric acid not only plays the roles of grafting the sulfur species but also reacts with the CaO, MgO, Al2O3 and Fe2O3 or their salts in ATTP to form the sulfates, resulting in the substantial change of the porous structure of ATTP. In such a process, the Bronsted acidic sites, which are the main active sites for the conversion of furfuryl alc. (FA) to Et levulinate (EL), are introduced, while the abundance/strength of the Lewis acid sites are enhanced. The yield of EL up to 95.4% is achieved over the H2SO4/ATTP catalyst. The Fe2(SO4)3 and MgSO4 in the catalyst leaches in ethanol but does not affect the catalytic stability. The formed polymer also does not affect much the catalytic activity after their removal via the calcination in air.

Renewable Energy published new progress about Adsorption. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Electric Literature of 112-63-0.

Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics