Category: 101-84-8

I found the field of Agriculture very interesting. Saw the article Volatiles distribution in jasmine flowers taxa grown in Egypt and its commercial products as analyzed via solid-phase microextraction (SPME) coupled to chemometrics published in 2020.0. Recommanded Product: Diphenyl oxide, Reprint Addresses Farag, MA (corresponding author), Cairo Univ, Fac Pharm, Pharmacognosy Dept, Cairo 11562, Egypt.. The CAS is 101-84-8. Through research, I have a further understanding and discovery of Diphenyl oxide

Jasmine is one of the most valuable commercial oil bearing plants from family Oleaceae used for the production of jasmine scent mostly in the form of concrete and absolute. Being an export commodity, development of reliable analytical methods for its jasmine species and derived products authentication and or adulterants detection should now follow. A comparative volatiles profiling of Jasminum grandiflorum L., J. multiflorum (Burm. f.) Andrews and J. sambac (L.) Aiton flowers in addition to J. grandiflorum products viz., concrete and absolute at different time periods was performed using solid phase microextraction (SPME) coupled to GC/MS. A total of 77 volatiles were identified belonging to esters, alcohols, sesquiterpenes, ketones, aldehydes, phenols, hydrocarbons and nitrogenous compounds. The phenylpropanoid/benzenoid and terpenoid classes were the major volatile classes in jasmine. Benzyl acetate was the chief scent volatile whereas major terpenoids included linalool, nerolidol, alpha-farnesene and cis-jasmone. Results revealed aroma variation among different flowers and products obtained from J. grandiflorum at different months. This study provides the first comprehensive and comparative aroma profile for Egyptian Jasminum species along with its products that could be used for its future quality control in industry.

Recommanded Product: Diphenyl oxide. About Diphenyl oxide, If you have any questions, you can contact Issa, MY; Mohsen, E; Younis, IY; Nofal, ES; Farag, MA or concate me.

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Formula: C12H10O. I found the field of Chemistry; Science & Technology – Other Topics very interesting. Saw the article Ni-Catalyzed reductive amination of phenols with ammonia or amines into cyclohexylamines published in 2020.0, Reprint Addresses De Vos, DE (corresponding author), Univ Leuven, KU Leuven, Ctr Membrane Separat Adsorpt Catalysis & Spect cM, Celestijnenlaan 200F,Post Box 2461, B-3001 Heverlee, Belgium.. The CAS is 101-84-8. Through research, I have a further understanding and discovery of Diphenyl oxide.

Phenol and its derivatives, which naturally occur in lignocellulose, can be considered as a renewable feedstock not only for aromatic, but also for alicyclic compounds, such as primary and N-substituted cyclohexylamines. So far, the latter are mostly produced from non-renewable starting materials like benzene via problematic nitration/reduction or cross-coupling routes. Herein, an efficient reductive amination of phenol with ammonia or amines is demonstrated, for the first time without the need for rare and expensive noble metals and without using any additives. Various supported Ni catalysts were screened and we elucidated the influence of the key parameters, including the acid-base properties of the supporting material. Acquired knowledge was then applied to different phenol-ammonia/amine combinations, resulting in the synthesis of various primary, secondary and tertiary cyclohexylamines in fair to very high yields.

Formula: C12H10O. About Diphenyl oxide, If you have any questions, you can contact Cuypers, T; Morias, T; Windels, S; Marquez, C; Van Goethem, C; Vankelecom, I; De Vos, DE or concate me.

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I found the field of Biochemistry & Molecular Biology; Chemistry very interesting. Saw the article Evaluation of three temperature- and mobile phase-dependent retention models for reversed-phase liquid chromatographic retention and apparent retention enthalpy published in 2019. HPLC of Formula: C12H10O, Reprint Addresses Weber, SG (corresponding author), Univ Pittsburgh, Chevron Sci Ctr, 219 Parkman Ave, Pittsburgh, PA 15260 USA.. The CAS is 101-84-8. Through research, I have a further understanding and discovery of Diphenyl oxide

Predicting retention and enthalpy allows for the simulation and optimization of advanced chromatographic techniques including gradient separations, temperature-assisted solute focusing, multidimensional liquid chromatography, and solvent focusing. In this paper we explore the fits of three expressions for retention as a function of mobile phase composition and temperature to retention data of 101 small molecules in reversed phase liquid chromatography. The three retention equations investigated are those by Neue and Kuss (NK) and two different equations by Pappa-Louisi et al., one based on a partition model (PL-P) and one based on an adsorption model (PL-A). More than 25 000 retention factors were determined for 101 small molecules under various mobile phase and temperature conditions. The pure experimental uncertainty is very small, approximately 0.22% uncertainty in retention factors measured on the same day (2.1% when performed on different days). Each of the three equations for ln(k) was fit to the experimental data based on a least-squares approach and the results were analyzed using lack-of-fit residuals. The PL-A model, while complex, gives the best overall fits. In addition to examining the equations’ adequacy for retention, we also examined their use for apparent retention enthalpy. This enthalpy can be predicted by taking the derivative of these expressions with respect to the inverse of absolute temperature. The numerical values of the fitted parameters based on retention data can then be used to predict retention enthalpy. These enthalpy predictions were compared to those obtained from a modified van ‘t Hoff equation that included a quadratic term in inverse temperature. Based on analysis of 1 211 van’t Hoff plots (solute-mobile phase-day combinations), ninety-eight percent showed a significantly better fit when using the modified van ‘t Hoff expression, justifying its use to provide apparent enthalpies as a function of mobile phase composition and temperature. The foregoing apparent enthalpies were compared to the apparent enthalpies predicted by the three models. The PL-A model, which contains a temperature dependent enthalpy, provided the best enthalpy prediction. However, there is virtually no correlation between the overall lack of fit to experimental ln(k) for each model and the corresponding lack of fit of the linear (in 1/T) van ‘t Hoff expression. Thus, the temperature-dependent enthalpy is apparently not the cause of a model’s ability to fit ln(k) as a function of mobile phase composition and temperature. The value in these expressions is their ability to predict chromatograms, allowing for optimization of an advanced chromatographic technique. The two simpler models NK and PL-P, which do not contain a temperature dependent enthalpy, have their merits in modelling retention (NK being the better of the two) and enthalpy (PL-P being the better of the two) if a simpler expression is required for a given application. (C) 2019 Elsevier B.V. All rights reserved.

HPLC of Formula: C12H10O. About Diphenyl oxide, If you have any questions, you can contact Horner, AR; Wilson, RE; Groskreutz, SR; Murray, BE; Weber, SG or concate me.

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An article Investigations into the structure-activity relationship in gemini QACs based on biphenyl and oxydiphenyl linker WOS:000611287900024 published article about QUATERNARY AMMONIUM-COMPOUNDS; ANTIBACTERIAL ACTIVITY; ANTIMICROBIAL AGENTS; MICROBIOLOGICAL PROPERTIES; BIOLOGICAL EVALUATION; BACTERICIDAL ACTION; SALTS; SURFACTANTS; SERIES; CONSTITUTION in [Vereshchagin, Anatoly N.; Frolov, Nikita A.; Konyuhova, Valeria Yu; Kapelistaya, Ekaterina A.; Egorov, Mikhail P.] Russian Acad Sci, ND Zelinsky Inst Organ Chem, 47 Leninsky Procpekt, Moscow 119991, Russia; [Hansford, Karl A.] Univ Queensland, Inst Mol Biosci, Brisbane, Qld 4072, Australia in 2021.0, Cited 51.0. Recommanded Product: 101-84-8. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8

Eighteen novel gemini quaternary ammonium compounds were synthesized to examine the effect of linker nature, aliphatic chain length and their relative position on antibacterial and antifungal activity. The synthesized compounds showed strong bacteriostatic activity against a panel of both Gram-positive and Gram-negative bacteria, including methicillin-resistant Staphylococcus aureus (MRSA) and two fungi. Some of these compounds exhibited a wider and more potent antimicrobial spectrum than commonly-used antiseptics, such as benzalkonium chloride (BAC), cetylpyridinium chloride (CPC), chlorhexidine digluconate (CHG) and octenidine dihydrochloride (OCT).

Recommanded Product: 101-84-8. About Diphenyl oxide, If you have any questions, you can contact Vereshchagin, AN; Frolov, NA; Konyuhova, VY; Kapelistaya, EA; Hansford, KA; Egorov, MP or concate me.

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An article Effect of Metal Catalysts on Bond Cleavage Reactions of Lignin Model Compounds in Supercritical Water WOS:000519980600020 published article about C-O BONDS; RENEWABLE CHEMICALS; ARYL ETHERS; GASIFICATION; BIOMASS; CONVERSION; DEPOLYMERIZATION; TRANSFORMATION; VALORIZATION; DEGRADATION in [Yamaguchi, Aritomo; Mimura, Naoki; Shirai, Masayuki; Sato, Osamu] Natl Inst Adv Ind Sci & Technol, Res Inst Chem Proc Technol, Miyagino Ku, 4-2-1 Nigatake, Sendai, Miyagi 9838551, Japan; [Shirai, Masayuki] Iwate Univ, Dept Chem & Biol Sci, Fac Sci & Engn, Ueda 4-3-5, Morioka, Iwate 0208551, Japan in 2020.0, Cited 37.0. Formula: C12H10O. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8

Lignin depolymerization into its aromatic monomers is necessary for the valorization of lignocellulosic biomass, but cleavage of the C-O ether bonds and C-C bonds between the monomers is challenging. In this study, we investigated bond cleavage reactions of benzyl phenyl ether, diphenyl ether, and biphenyl, which served as models for lignin compounds with alpha-O-4, 4-O-5, and 5-5 linkages, respectively, by using various metal catalysts in supercritical water at 673 K and a water density of 0.5 g cm(-3) without added hydrogen gas. Benzyl phenyl ether was decomposed without catalyst. We found that palladium, platinum, and rhodium catalysts supported on carbon showed activity for cleavage of the C-O ether bonds in benzyl phenyl ether and diphenyl ether but not for the bonds between the aromatic units of biphenyl. Using anisole as a model compound, we also found that methoxy groups, which are present in lignin containing coniferyl and sinapyl alcohol monomers, were converted into phenol groups or were decomposed. The reaction conditions described herein have great potential utility for the conversion of lignin, which can be decomposed and dissolved in supercritical water, into valuable aromatic compounds.

About Diphenyl oxide, If you have any questions, you can contact Yamaguchi, A; Mimura, N; Shirai, M; Sato, O or concate me.. Recommanded Product: Diphenyl oxide

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Safety of Diphenyl oxide. Authors Shishilov, ON; Shamsiev, RS; Akhmadullina, NS; Flid, VR in WILEY-V C H VERLAG GMBH published article about in [Shishilov, Oleg N.; Shamsiev, Ravshan S.; Flid, Vitaly R.] MIREA Russian Technol Univ, MV Lomonosov Inst Fine Chem Technol, Phys Chem Dept, Vernadskogo Av 86, Moscow 119571, Russia; [Akhmadullina, Nailya S.] Russian Acad Sci, AA Baikov Inst Met & Mat Sci, Lab Phys & Chem Anal Ceram Mat, Leninsky Av 49, Moscow 119991, Russia in 2021.0, Cited 56.0. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8

Palladium nitrsosyl carboxylates Pd-3(NO)(2)(CX3CO2)(4)(ArH)(2) (I: X=Cl, Ar=Ph; II: X=F, Ar=Tol) are found to be effective catalysts for C-H/C-H oxidative homocoupling of arenes bearing electron-donor as well as electron-withdrawing groups (EWG). Trifluoroacetate complex II is found to be more promising due to higher stability under the reaction conditions. Complex II also shows high performance in intramolecular coupling in diarylsulfides, diarylethers and diarylamines giving corresponding dibenzothiophenes, dibenzofurans and carbazoles with yields ranged from moderate to high. The plausible mechanism is studied by DFT computational analysis basing on Pd-3 linear complexes as major active species. It was found that two deprotonation steps proceed in two different ways: for the first deprotonation SEAr is most probable pathway while for the second one concerted metalation-deprotonation (CMD) is preferable. That can explain high tolerance of the system to different substrates: SEAr is favorable in the presence of electron donor group and EWG facilitate CMD. NO group was found to be involved into the CMD pathway and that is the rate-determining step with the highest activation barrier.

Safety of Diphenyl oxide. About Diphenyl oxide, If you have any questions, you can contact Shishilov, ON; Shamsiev, RS; Akhmadullina, NS; Flid, VR or concate me.

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An article Serum elimination half-lives adjusted for ongoing exposure of tri-to hexabrominated diphenyl ethers: Determined in persons moving from North America to Australia WOS:000527930600005 published article about BROMINATED FLAME RETARDANTS; POLYCHLORINATED-BIPHENYLS; NEONATAL EXPOSURE; PRENATAL EXPOSURE; THYROID-HORMONE; NATIONAL-HEALTH; PBDE; POPULATION in [Sjodin, Andreas; Jones, Richard; Schutze, Andre; Wong, Lee-Yang; Caudill, Samuel P.] Ctr Dis Control & Prevent, NCEH, DLS, 4770 Buford Hwy NE, Atlanta, GA 30341 USA; [Mueller, Jochen F.] Univ Queensland, Queensland Alliance Environm Hlth Sci QAEHS, 20 Cornwall St, Woolloongabba, Qld 4102, Australia; [Harden, Fiona A.] Hunter Ind Med, Maitland, Australia; [Webster, Thomas F.] Boston Univ, Dept Environm Hlth, Sch Publ Hlth, Boston, MA 02130 USA; [Toms, Leisa-Maree] Queensland Univ Technol, Fac Hlth, Sch Publ Hlth & Social Work, Inst Hlth & Biomed Innovat, Brisbane, Qld, Australia in 2020.0, Cited 34.0. Safety of Diphenyl oxide. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8

The objective of the study was to determine the human serum elimination half-life of polybrominated diphenyl ethers (PBDEs) adjusted for ongoing exposure in subjects moving from a higher exposure region (North America) to a lower exposure region (Australia). The study population was comprised of exchange students and long-term visitors from North America moving to Brisbane, Australia (N = 27) and local residents (N = 23) who were followed by repeated serum sampling every other month. The local residents were sampled to adjust for ongoing exposure in Australia. Only one visitor remained in Australia for a period of time similar to the elimination half-life and had a sufficiently high initial concentration of PBDEs to derive a half-life. This visitor arrived in Australia in March of 2011 and remained in the country for 1.5 years. Since the magnitude of PBDE exposure is lower in Australia than in North America we observed an apparent 1st order elimination curve over time from which we have estimated the serum elimination half-lives for BDE28, BDE47, BDE99, BDE100, and BDE153 to be 0.942, 1.19, 1.03, 2.16, and 4.12 years, respectively. Uncertainty in the estimates were estimated using a Monte Carlo simulation. The human serum elimination half-life adjusted for ongoing exposure can allow us to assess the effectiveness and reduction in exposure in the general population following phase out of commercial penta- and octaBDE in 2004 in the United States. (C) 2020 Published by Elsevier Ltd.

Safety of Diphenyl oxide. About Diphenyl oxide, If you have any questions, you can contact Sjodin, A; Mueller, JF; Jones, R; Schutze, A; Wong, LY; Caudill, SP; Harden, FA; Webster, TF; Toms, LM or concate me.

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Recommanded Product: Diphenyl oxide. In 2020.0 RSC ADV published article about VAN-DER-WAALS; MINIMUM ENERGY CONFORMATIONS; PHOTOFRAGMENTATION DYNAMICS; NONCOVALENT INTERACTIONS; PROTON-TRANSFER; STATE; BONDS; WATER; METHYLTHIOPHENOL; SPECTROSCOPY in [Wang, Lian; Zhang, Song; Wang, Ye; Zhang, Bing] Chinese Acad Sci, Innovat Acad Precis Measurement Sci & Technol, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China; [Wang, Lian; Zhang, Song; Wang, Ye; Zhang, Bing] Univ Chinese Acad Sci, Beijing 100049, Peoples R China in 2020.0, Cited 46.0. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8.

Dispersion interactions are omnipresent in large aromatic systems and influence the dynamics as intermolecular forces. The structural preference induced by dispersion interactions is demonstrated to influence the excited state dynamics of diphenyl ether (DPE) using femtosecond time-resolved transient absorption (TA) associated with quantum chemical calculations. The experimental results in aprotic solvents show that the S-1 state is populated upon irradiation at 267 nm with excess vibrational energy dissipating to solvent molecules in several picoseconds, and then decays via internal conversion (IC) within 50 ps as well as intersystem crossing (ISC) and fluorescence with a lifetime of nanoseconds. The polarity of the solvent disturbs the excited state energies and enhances the energy barriers of the ISC channel. Furthermore, the intermolecular dispersion interactions with protic solvents result in the OH-pi isomer dominating in methanol and the OH-O isomer is slightly preferred in t-butanol in the ground state. The hydrogen bonded isomer measurements show an additional change from OH-O to OH-pi geometry in the first 1 ps besides the relaxation processes in aprotic solvents. The time constants measured in the TA spectra suggest that the OH-O isomer facilitates IC. The results show that the OH-pi isomer has a more rigid structure and a higher barrier for IC, making it harder to reach the geometric conical intersection through conformer rearrangement. This work enables us to have a good knowledge of how the structural preference induced by dispersion interactions affects excited state dynamics of the heteroaromatic compounds.

About Diphenyl oxide, If you have any questions, you can contact Wang, L; Zhang, S; Wang, Y; Zhang, B or concate me.. Application In Synthesis of Diphenyl oxide

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Stavila, V; Foster, M; Brown, JW; Davis, RW; Edgington, J; Benin, AI; Zarkesh, RA; Parthasarathi, R; Hoyt, DW; Walter, ED; Andersen, A; Washton, NM; Lipton, AS; Allendorf, MD in [Stavila, Vitalie; Foster, Michael; Brown, Jonathon W.; Davis, Ryan W.; Edgington, Jane; Benin, Annabelle, I; Zarkesh, Ryan A.; Parthasarathi, Ramakrishnan; Allendorf, Mark D.] Sandia Natl Labs, Chem Combust & Mat Ctr, Livermore, CA 94551 USA; [Hoyt, David W.; Walter, Eric D.; Andersen, Amity; Washton, Nancy M.; Lipton, Andrew S.] Pacific Northwest Natl Lab, Environm Mol Sci Lab, Richland, WA 99354 USA published IRMOF-74(n)-Mg: a novel catalyst series for hydrogen activation and hydrogenolysis of C-O bonds in 2019.0, Cited 79.0. HPLC of Formula: C12H10O. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8.

Metal-Organic Frameworks (MOFs) that catalyze hydrogenolysis reactions are rare and there is little understanding of how the MOF, hydrogen, and substrate molecules interact. In this regard, the isoreticular IRMOF-74 series, two of which are known catalysts for hydrogenolysis of aromatic C-O bonds, provides an unusual opportunity for systematic probing of these reactions. The diameter of the 1D open channels can be varied within a common topology owing to the common secondary building unit (SBU) and controllable length of the hydroxy-carboxylate struts. We show that the first four members of the IRMOF-74(Mg) series are inherently catalytic for aromatic C-O bond hydrogenolysis and that the conversion varies non-monotonically with pore size. These catalysts are recyclable and reusable, retaining their crystallinity and framework structure after the hydrogenolysis reaction. The hydrogenolysis conversion of phenylethylphenyl ether (PPE), benzylphenyl ether (BPE), and diphenyl ether (DPE) varies as PPE > BPE > DPE, consistent with the strength of the C-O bond. Counterintuitively, however, the conversion also follows the trend IRMOF-74(III) > IRMOF-74(IV) > IRMOF-74(II) > IRMOF-74(I), with little variation in the corresponding selectivity. DFT calculations suggest the unexpected behavior is due to much stronger ether and phenol binding to the Mg(ii) open metal sites (OMS) of IRMOF-74(III), resulting from a structural distortion that moves the Mg2+ ions toward the interior of the pore. Solid-state Mg-25 NMR data indicate that both H-2 and ether molecules interact with the Mg(ii) OMS and hydrogen-deuterium exchange reactions show that these MOFs activate dihydrogen bonds. The results suggest that both confinement and the presence of reactive metals are essential for achieving the high catalytic activity, but that subtle variations in pore structure can significantly affect the catalysis. Moreover, they challenge the notion that simply increasing MOF pore size within a constant topology will lead to higher conversions.

HPLC of Formula: C12H10O. About Diphenyl oxide, If you have any questions, you can contact Stavila, V; Foster, M; Brown, JW; Davis, RW; Edgington, J; Benin, AI; Zarkesh, RA; Parthasarathi, R; Hoyt, DW; Walter, ED; Andersen, A; Washton, NM; Lipton, AS; Allendorf, MD or concate me.

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Safety of Diphenyl oxide. Authors Gorginpour, F; Zali-Boeini, H in ELSEVIER published article about in [Gorginpour, Forough; Zali-Boeini, Hassan] Univ Isfahan, Dept Chem, Esfahan 8174673441, Iran in 2021, Cited 72. The Name is Diphenyl oxide. Through research, I have a further understanding and discovery of 101-84-8

A quinoxaline-based porous organic polymer (Q-POP) as a mesoporous organic copolymer was developed as a new platform for the immobilization of CuNPs and copper nanocrystals. The prepared materials were characterized by FT-IR, XRD, N-2 adsorption-desorption isotherms, ICP, TGA, SEM, HR-TEM, EDX, and single-crystal X-ray crystallography. The obtained catalyst presented extraordinary catalytic activity towards Ullmann C-O coupling reactions with high surface area, hierarchical porosity, and excellent thermal and chemical stability. Due to its high porosity, and synergistic effect of copper nanocrystals incorporated in the polymer composite, the as-synthesized catalyst was successfully utilized for the Ullmann C-O coupling reaction of phenols and different aryl halides to prepare various diaryl ether derivatives. All types of aryl halides (except aryl fluorides) were screened in the Ullmann C-O coupling reaction with phenols to produce diaryl ethers in good to excellent yields (70-97 %), and it was found that aryl iodides have the best results. Besides, due to the strong interactions between CuNPs, N, and O-atoms of quinoxaline moiety existing in the polymeric framework, the copper leaching from the support was not observed. Furthermore, the catalyst was recycled and reused for five consecutive runs without significant activity loss.

Safety of Diphenyl oxide. About Diphenyl oxide, If you have any questions, you can contact Gorginpour, F; Zali-Boeini, H or concate me.

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Ether – Wikipedia,
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