Category: 121-00-6

Chen, Yi-Hao published the artcileCobalt(II) phenoxy-imine complexes in radical polymerization of vinyl acetate: The interplay of catalytic chain transfer and controlled/living radical polymerization, Related Products of ethers-buliding-blocks, the main research area is cobalt phenoxyimine complex catalyst vinyl acetate radical polymerization.

A series of cobalt(II) phenoxy-imine complexes (CoII(FI)2) have been synthesized to mediate the radical polymerization of vinyl acetate (VAc) and Me acrylate (MA) to evaluate the influence of chelating atoms and configuration to the control of polymerization The VAc polymerizations showed the properties of controlled/living radical polymerization (C/LRP) with complexes 1a and 3a, but the catalytic chain transfer (CCT) behaviors with complexes 2a, 1b, 2b, and 3b. The control of VAc polymerization mediated by complex 1a could be improved by decreasing the reaction temperature to approach the mol. weights that not only linearly increased with conversions but also matched the theor. values and relatively narrow mol. weight distributions. The catalytic chain transfer polymerizations (CCTP) mediated by complexes 2a, 1b, 2b, and 3b were characterized by Mayo plots and the polymer chain end double bonds were observed by 1H NMR spectra. The tendency toward C/LRP or CCTP in VAc polymerization mediated by CoII(FI)2 could be determined by the ligand structure. Cobalt complex coordinated by the ligand with more steric hindered and less electron-donating substituents favored the controlled/living radical polymerization In contrast, the efficiency of CCT process could be enhanced by less steric hindered, more electron-donating ligands. The controlled/living radical polymerization of MA, however, could not be achieved by the mediation of these cobalt(II) phenoxy-imine complexes. Associated with the results of polymerization mediated by other cobalt complexes, this study implied that the configuration and spin state of cobalt complexes were more critical than the chelating atoms to the control behavior of radical polymerization

Journal of Polymer Science (Hoboken, NJ, United States) published new progress about Crystal structure. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Related Products of ethers-buliding-blocks.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Xu, Hanqing published the artcileConstructing an MCF-7 breast cancer cell-based transient transfection assay for screening RARα (Ant)agonistic activities of emerging phenolic compounds, Application of 4-Hydroxy-3-tert-butylanisole, the main research area is phenolic compound RARalpha antagonist transfection assay breast carcinoma cell; (Ant)agonistic activity; Emerging chemicals of concern; Endocrine disrupting effects; Retinoic acid receptor α (RARα); Transient transfection.

The screening of compounds with endocrine disrupting effects has been attracting increasing attention due to the continuous release of emerging chems. into the environment. Testing the (ant)agonistic activities of these chems. on the retinoic acid receptor α (RARα), a vital nuclear receptor, is necessary to explain their perturbation in the endocrine system in vivo. In the present study, MCF-7 breast carcinoma cells were transiently transfected with a RARα expression vector (pEF1α-RARα-RFP) and a reporter vector containing a retinoic acid reaction element (pRARE-TA-Luc). Under optimized conditions, the performance of the newly constructed system was evaluated for its feasibility in screening the (ant)agonistic effects of emerging phenolic compounds on RARα. The results showed that this transient transfection cell model responded well to stimulation with (ant)agonists of RARα, and the EC50 and IC50 values were 0.87 nM and 2.67μM for AM580 and Ro41-5253, resp. Its application in testing several emerging phenolic compounds revealed that triclosan (TCS) and tetrabromobisphenol A (TBBPA) exerted notable RARα antagonistic activities. This newly developed bioassay based on MCF-7 is promising in identifying the agonistic or antagonistic activities of xenobiotics on RARα and has good potential for studying RARα signaling-involved toxicol. effects of emerging chems. of concern.

Journal of Hazardous Materials published new progress about Crystal structure. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Application of 4-Hydroxy-3-tert-butylanisole.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Andrea, Kori A. published the artcileIron Complexes for Cyclic Carbonate and Polycarbonate Formation: Selectivity Control from Ligand Design and Metal-Center Geometry, Application of 4-Hydroxy-3-tert-butylanisole, the main research area is aminobisphenolate iron complex preparation crystal mol structure; cyclic carbonate preparation; carbon dioxide reaction epoxide aminobisphenolate iron complex catalyzed.

A family of 17 iron(III) aminobis(phenolate) complexes possessing different phenolate substituents, coordination geometries, and donor arrangements were used as catalysts for the reaction of carbon dioxide (CO2) with epoxides. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry of the iron complexes with a bis(triphenylphosphine)iminium chloride cocatalyst in neg. mode revealed the formation of six-coordinate iron “”ate”” species. Under low catalyst loadings (0.025 mol % Fe and 0.1 mol % chloride cocatalyst), all complexes showed good-to-excellent activity for converting propylene oxide to propylene carbonate under 20 bar of CO2. The most active complex possessed electron-withdrawing dichlorophenolate groups and for a 2 h reaction time gave a turnover frequency of 1240 h-1. Epichlorohydrin, styrene oxide, Ph glycidyl ether, and allyl glycidyl ether could also be transformed to their resp. cyclic carbonates with good-to-excellent conversions. Selectivity for polycarbonate formation was observed using cyclohexene oxide, where the best activity was displayed by trigonal-bipyramidal iron(III) complexes having electron-rich phenolate groups and sterically unencumbering tertiary amino donors. Those containing bulky tertiary amino ligands or those with square-pyramidal geometries around iron showed no activity for polycarbonate formation. While the overall conversions declined with decreasing CO2 pressure, CO2 incorporation remained high, giving a completely alternating copolymer. The difference in the optimum catalyst reactivity for cyclic carbonate vs. polycarbonate formation is particularly noteworthy; i.e., electron-withdrawing-group-containing phenolates give the most active catalysts for propylene carbonate formation, whereas catalysts with electron-donating-group-containing phenolates are the most active for polycyclohexene carbonate formation. This study demonstrates that the highly modifiable aminophenolate ligands can be tailored to yield iron complexes for both CO2/epoxide coupling and ring-opening copolymerization activity.

Inorganic Chemistry published new progress about Crystal structure. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Application of 4-Hydroxy-3-tert-butylanisole.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Taniike, Toshiaki published the artcileStabilizer formulation based on high-throughput chemiluminescence imaging and machine learning, Product Details of C11H16O2, the main research area is stabilizer formulation chemiluminescence imaging learning.

The combination of synergistic stabilizers is a basic strategy for prolonging the lifetime of polymeric materials, but exploration of combinations has been minimally accomplished due to certain problems. Here, we report a highly efficient exploration of stabilizer formulations based on high-throughput chemiluminescence imaging (HTP-CLI) and machine learning. Different formulations were generated by selecting 10 kinds of stabilizers from a library, and their performance in stabilizing polypropylene (PP) was evaluated based on HTP-CLI measurements. Formulations were evolved through a genetic algorithm to elongate the lifetime of PP. A demonstrative implementation up to the fifth generation successfully identified performant formulations, in which mutually synergistic combinations of stabilizers played a pivotal role.

ACS Applied Polymer Materials published new progress about Chemiluminescence. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Product Details of C11H16O2.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Yarkova, T. A. published the artcileQuantum-Chemical Prediction of the Redox Properties of Humic Acids, COA of Formula: C11H16O2, the main research area is humic acid antioxidant HOMO adsorption energy electrophilicity.

A comparative anal. of the reactivity indexes of the model structure of humic acids (HAs) and a number of antioxidants was carried out based on the results of quantum-chem. calculations performed using the d. functional theory (DFT) b3lyp/6-31g(d,p) method. With the use of 15 compounds as an example, it was found that the electronegativity index χ linearly correlates with the energy of the LUMO (ELUMO), R2 = 0.977. HAs (ELUMO = -2.52) are located close to mol. oxygen (ELUMO = -3.07), and this fact indicates a high electronegativity of these natural compounds It was proposed to evaluate the antioxidant ability of the organic matter of HAs by the adsorption energy of mol. oxygen. By determining the local min. of O2 sensing energy in different sections of HAs using the pm6 quantum chem. method, it was established that oxygen is adsorbed by a hydroxyl group with the energy ΔEads = -70 kcal/mol. This allows the highly reactive organic part of HAs to inhibit mol. oxygen in oxidation processes.

Solid Fuel Chemistry published new progress about Adsorption energy. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, COA of Formula: C11H16O2.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Liu, Chao published the artcileBioenergy and emission characterizations of catalytic combustion and pyrolysis of litchi peels via TG-FTIR-MS and Py-GC/MS, HPLC of Formula: 121-00-6, the main research area is peel catalytic combustion pyrolysis bioenergy emission characteristics.

This study characterized the catalytic combustions and emissions of litchi peels as a function of five catalysts as well as the effect of the best catalyst on the pyrolysis byproducts. Na2CO3 and K2CO3 accelerated the devolatilization but delayed the coke burnout, while Al2O3 enhanced the coke oxidation rate. Both comprehensive combustion index and average activation energy dropped with the added catalysts. CO2, CO, and H2O were the main combustion gases between 300 and 510°C. CO2, C-H, C=O, and C-O were generated from the pyrolysis between 200 and 430°C above which CO2 and CH4 were slightly released. Total H2O, CO2, CO, NOx and SOx emissions declined with the added catalysts among which K2CO3 performed better. The main pyrolytic byproducts at 330°C were terpenoids and steroids (71.87%), phenols (15.51%), aliphates (9.95%), and small mols. (2.78%). At 500°C, terpenoids and steroids (78.35%), and small mols. (3.20%) rose, whereas phenols (12.87%), and aliphates (5.83%) fell. Fatty acid, and ester decreased, while terpenoids, and steroids increased with MgCO3 at 330°C. Litchi peels appeared to be a promising biowaste, with MgCO3 as the optimal catalytic option in terms of the bioenergy performance, and emission reduction

Renewable Energy published new progress about Activation energy. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, HPLC of Formula: 121-00-6.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Diao, Rui published the artcileFractional valorization of bio-oil distillation residue: Strategically perfecting the pivotal step of biomass refinery system, Quality Control of 121-00-6, the main research area is biooil distillation residue fractional valorization biomass refinery system.

With the gradual maturation of biomass refinery system, the eco-friendly disposal of bio-oil distillation residue (DR) is still required to be explored towards ecol. protection and contaminant management. Here, we proposed a fractional process for valorizing DR through coupling of torrefaction and KOH impregnation (KI), with the emphasis on thermolysis behaviors, kinetic responses, gaseous emissions, product distribution and pyrolytic mechanism. The results indicated low-temperature torrefaction (LTT) promoted the enhancement of pyrolysis rate and accelerated the emissions of light compounds The elevated temperatures for high-temperature torrefaction (HTT) weakened the pyrolysis rate, with the diminishment of 46.02-59.46%, while the subsequent KI process facilitated the pyrolysis rate of HTT-derived DR. The kinetic responses illustrated the activation energies with the enhancement of 21.93%-30.12% increased as pretreatment temperatures increased, ranging from 112.97 to 159.77 kJ/mol. Light torrefaction promoted the emissions of C=C, O-H, and C-H, while the phenols and hydrocarbons among pyrolyzates were the most susceptible to the sequential temperature-dependency responses. The fractional valorization process was more conducive to producing hydrocarbons, ketones, and furans, unfortunately with reductions in phenolic contents, which might be attributed to the hydrogenated DR and decreased ether bonds after torrefying. In addition, cooperating of LTT and subsequent KI was inclined to destroy microcrystalline structure and carbonaceous skeleton for the sake of promoting reaction rate, whereas HTT-derived DR endowed a stable carbon skeleton, which was against the generation of pyrolyzates and enhancement of pyrolytic rate. Generally, the fractional pretreatment was favorable to the acceleration of reaction rates and directional product distribution. Our findings can provide a feasible strategy for efficient disposal of DS towards cleaner production and energy recovery, and laid a puissant foundation for the future large-scale downstream processing of DR and perfection of biomass refinery system towards waste recycling and contaminant control.

Journal of Cleaner Production published new progress about Activation energy. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Quality Control of 121-00-6.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Ogata, Koki published the artcilePilot production of chrome-tanned leather without formation of hexavalent chromium by treatment with a combination of inhibitors, Related Products of ethers-buliding-blocks, the main research area is ascorbic acid inhibitor chrome tanned leather phys mech property.

A combination of inhibitors, namely a mixture of 1.0mmol of 3(2)-t-butyl-4-hydroxyanisole, 0.01 mmol of ascorbic acid, and 0.001mmol of collagen peptide exhibiting complete inhibition of C6+ formation on a laboratory-scale, was applied to produce chrome-tanned upper leather without formation of Cr6+ in the actual manufacturing line of a tanner. In this study, the following two methods were used for application of the combined inhibitor; (1) spraying with the combined inhibitor solution before finishing, using twice the volume of the dry leather weight after fat-liquoring; and (2) coating with base-coat containing the combined inhibitor before top coating in the finishing process, using twice the volume of the dry leather weight Each inhibitor-treated leather contained chem. components similar to those of typical leather produced without the combined inhibitor, and exhibited perfect inhibition of Cr6+ formation, even if heat-aged. In addition, the phys. strength of the inhibitor-treated leathers was higher than that of leather produced usually without inhibitor. In particular, the surface strength (ball burst) of the treated leathers was twice that of the untreated leather. These results indicate that this combination of inhibitors could be effectively applied to industrially produce Cr-tanned leather not only without C6+ formation but also with an improved phys. strength.

Journal of the Society of Leather Technologists and Chemists published new progress about Adhesion, physical. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Related Products of ethers-buliding-blocks.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Felix e Silva, Altiery published the artcileAntibacterial and antibiofilm activities and synergism with florfenicol from the essential oils of Lippia sidoides and Cymbopogon citratus against Aeromonas hydrophila, Product Details of C11H16O2, the main research area is Lippia Cymbopogon Aeromonas essential oils; antimicrobial; aquaculture; biofilm; carvacrol; citral.

Aeromonas hydrophila is an opportunistic bacterium, with a high capacity for biofilm production, which can cause severe damage in aquaculture. The objective of this study was to identify the chem. compounds of the essential oils of Lippia sidoides (EOLS) and Cymbopogon citratus (EOCC), and to evaluate the biocidal, antibiofilm and synergistic action with the antimicrobial florfenicol of these essential oils (EOs) against A. hydrophila. The antibacterial activity of EOLS and EOCC was verified by the min. bactericidal concentration and by the action of these EOs against both forming and consolidated biofilms. The synergistic activity of EOs with florfenicol was performed using the checkerboard technique. The main component of EOLS and EOCC was carvacrol (44.50%) and α-citral (73.56%), resp. Both EOs showed weak inhibitory activity (≥3125.00 μg ml-1). Two bacterial isolates were able to produce biofilm, and EOLS and EOCC acted upon the bacterial isolates to prevent biofilm formation. A bactericidal effect was verified for EOLS in the previously consolidated biofilm for both isolates and for EOCC in only one of the isolates. In general, EOLS had a synergistic effect with florfenicol, while EOCF had an additive effect. Both EOs were able to interfere with biofilm formation and did not have an antagonistic effect in combination with florfenicol. The best results were found for EOLS, which showed a synergistic effect with florfenicol and the ability to interfere in the formation of consolidated biofilm. This study highlights the potential of EOLS and EOCC to interfere in biofilm and act in synergy with florfenicol to reduce the occurrence of A. hydrophila. Development of these compounds may contribute to the development of herbal medicines in aquaculture.

Journal of Applied Microbiology published new progress about Aeromonas hydrophila. 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Product Details of C11H16O2.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem

Li, Bin published the artcileVolatile-char interactions during biomass pyrolysis Effect of char preparation temperature, Recommanded Product: 4-Hydroxy-3-tert-butylanisole, the main research area is volatile char interactions biomass cellulose pyrolysis.

In this study, the effect of char preparation temperature on the interactions between cellulose volatiles and acid-washed sawdust char was investigated exptl. on a fixed-bed pyrolysis system. The results indicated that significant volatile-char interactions did exist at the pyrolysis temperature of 500 °C as evidenced by the great changes in the composition and distribution of pyrolysis products. The oxygen-containing functional groups as well as the aromatic ring systems in the char both acted as active sites during the volatile-char interactions. The changes in chem. structure of biochar caused by the different preparation temperatures would notably affect the final products of cellulose pyrolysis. Meanwhile, the acid-washed sawdust char was still found to participate in the reaction process, lower temperature chars would have higher reactivities, and an obvious weight loss of char was also observed after interactions. In addition, volatile-char interactions significantly increased the yields of non-condensable gases, especially those of CO and CO2, while decreased the yield of condensable vapors. The introduction of biochar into cellulose pyrolysis could promote the ring scission of pyranoses as well as the decarbonylation/decarboxylation and dehydration reactions, thus caused the yields of anhydrosugars and monoarom. compounds decreased and the yields of light ketones and acids increased.

Energy (Oxford, United Kingdom) published new progress about Acids Role: IMF (Industrial Manufacture), PREP (Preparation). 121-00-6 belongs to class ethers-buliding-blocks, name is 4-Hydroxy-3-tert-butylanisole, and the molecular formula is C11H16O2, Recommanded Product: 4-Hydroxy-3-tert-butylanisole.

Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem