Tag: M.W=50-100

Rahmatpour, Ali published the artcileMBA-cross-linked poly(N-vinyl-2-pyrrolidone)/ferric chloride macromolecular coordination complex as a novel and recyclable Lewis acid catalyst: Synthesis, characterization, and performance toward for regioselective ring-opening alcoholysis of epoxides, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Reactive & Functional Polymers (2021), 105032, database is CAplus.

A novel macromol.-metal coordination complex, MBA-cross-linked PNVP/FeCl₃ material was fabricated by immobilization of water intolerant ferric chloride onto the porous cross-linked poly(N-vinyl-2-pyrrolidone) carrier beads as a macromol. ligand or carrier which was prepared by suspension free-radical copolymerization of N-vinyl-2-pyrrolidone (NVP) and N,N’-methylene bis-acrylamide (MBA) as a crosslinking agent in water. The obtained PNVP/FeCl₃ was characterized by UV/vis and FT-IR spectroscopies, TGA, FE-SEM, EDX, and ICP techniques. This heterogenized version of ferric chloride is a convenient and safe alternative to highly water intolerant ferric chloride. The catalytic performance of (PNVP/FeCl₃) as an efficient and recyclable polymeric Lewis acid catalyst was appropriately probed in the regio-and stereoselective nucleophilic ring opening of various epoxides with various alcs. in excellent yields with TOF up to 182.48 h^-1 without generating any waste. The activity data indicate that this heterogeneous catalyst is very active and could be easily recovered, and reused at least six times without appreciable loss of activity indicating its stability under exptl. conditions.

Reactive & Functional Polymers published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Recommanded Product: 2-Methoxypropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Lin, Min published the artcileGreen and efficient epoxidation of propylene with hydrogen peroxide (HPPO process) catalyzed by hollow TS-1 zeolite: A 1.0 kt/a pilot-scale study, Safety of 2-Methoxypropan-1-ol, the publication is Chemical Engineering Journal (Amsterdam, Netherlands) (2016), 370-375, database is CAplus.

The propylene epoxidation catalyzed by hollow TS-1 zeolite with 30 wt% H₂O₂ solution as oxidant at 1.0 kt/a pilot plant has been examined Rising reaction temperature is in favor of increasing TOF of H₂O₂ but reduces the selectivity of PO, due to the promotion of major and side reactions at the same time. Enhancing the CH₃OH amount and the WHSV of H₂O₂ is preferential to improving the TOF of H₂O₂ and the selectivity of PO, but increase capital and energy consumption as well. Taking all into consideration, the optimized epoxidation has been confirmed: T is 40-50 °C; molar ratio of CH₃OH/H₂O₂ is 5-15, and the WHSV of H₂O₂ is more than 1.2 h^-1. When the epoxidation of propylene carried out over 6000 h, the TOF of H₂O₂ is 30.9-32.2 mmol g^-1 h^-1 and the PO selectivity is 96-99%, resp. The final PO product from this plant is at 99.97% purity, which has been used as an intermediate to synthesize kinds of chems.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Safety of 2-Methoxypropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Zhao, Yun-Peng published the artcileSequential Extraction and Thermal Dissolution of Baiyinhua Lignite in Isometric CS₂/Acetone and Toluene/Methanol Binary Solvents, Formula: C4H10O2, the publication is Energy & Fuels (2016), 30(1), 47-53, database is CAplus.

Baiyinhua lignite (BL) was sequentially extracted and thermally dissolved in isometric CS₂/acetone and toluene/methanol binary solvents to obtain an extract in isometric CS₂/acetone (E_ICA) and a soluble portion (SP) in isometric toluene/methanol (SP_ITM). The yields of E_ICA and SP_ITM are notably higher than the total extract yield from sequential extraction with CS₂ and acetone (or acetone and CS₂) and the total SP yield from sequential thermal dissolution in toluene and methanol (or methanol and toluene), indicating that there exists an obvious synergic effect between CS₂ and acetone during the extraction and between toluene and methanol during the thermal dissolution E_ICA and SP_ITM mainly consist of hydrocarbons and oxygen-containing organic species, resp. Little difference in Fourier transform IR spectroscopy spectra of BL and its extraction residue was observed, while the intensities of absorbances assigned to the phenolic OH, C=O, and C-O/C-O-C groups of the thermal dissolution residue are obviously lower than those of BL and its extraction residue. XPS anal. shows that C-O/C-O-C groups in BL remarkably decreased after thermal dissolution, corresponding to the abundant phenols dissolved in SP_ITM. The difference in weight loss between BL and its extraction residue is close to the yield of E_ICA, while the difference in weight loss between extraction and thermal dissolution residues is significantly lower than the yield of SP_ITM.

Energy & Fuels published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C8H16O2, Formula: C4H10O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Chen, Jiao published the artcileComparative analysis of volatile components in nine species of marine diatoms, Computed Properties of 1589-47-5, the publication is Shengwuxue Zazhi (2014), 31(2), 35-40, database is CAplus.

The volatile components in nine species of marine diatom staying in stationary phase were concentrated by head space solid-phase micro-extraction and gas chromatog.-mass spectrometry. Integral components of peak area for different diatoms were analyzed by the SIMCA-P software. The results showed that in all of the volatile components the content and types of aldehydes occupied a great advantage in all components. Nonanal, 2,4-octadienal, 2-hexenal, 2-nonenal and 2,4-heptadienal were the main components in marine diatom. The content of some alkanes such as tetradecane, pentadecane 1-pentadecene, hexadecane was only less than that of aldehydes. 3,5-octene-3-one and 1-octene-3-ol were the most common short-chain ketones and alcs. The sulfur-containing compounds, di-Me sulfide was also detected in all diatom. The volatile components like 8-heptadecene, 1-penten-3-one, 1-hexyl-3-ol and 2,6-di-Me phenol had great differences which determined the unique flavor of 9 marine diatom.

Shengwuxue Zazhi published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Computed Properties of 1589-47-5.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Ikejo, Makoto published the artcileImprovement of the Force Field for β-d-Glucose with Machine Learning, Synthetic Route of 1589-47-5, the publication is Molecules (2021), 26(21), 6691, database is CAplus and MEDLINE.

While the construction of a dependable force field for performing classical mol. dynamics (MD) simulation is crucial for elucidating the structure and function of biomol. systems, the attempts to do this for glycans are relatively sparse compared to those for proteins and nucleic acids. Currently, the use of GLYCAM06 force field is the most popular, but there have been a number of concerns about its accuracy in the systematic description of structural changes. In the present work, we focus on the improvement of the GLYCAM06 force field for β-d-glucose, a simple and the most abundant monosaccharide mol., with the aid of machine learning techniques implemented with the TensorFlow library. Following the pre-sampling over a wide range of configuration space generated by MD simulation, the at. charge and dihedral angle parameters in the GLYCAM06 force field were re-optimized to accurately reproduce the relative energies of β-d-glucose obtained by the d. functional theory (DFT) calculations according to the structural changes. The validation for the newly proposed force-field parameters was then carried out by verifying that the relative energy errors compared to the DFT value were significantly reduced and that some inconsistencies with exptl. (e.g., NMR) results observed in the GLYCAM06 force field were resolved relevantly.

Molecules published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Synthetic Route of 1589-47-5.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Luo, Zhiqiang published the artcileA Stable Zn-Based Metal-Organic Framework as an Efficient Catalyst for Carbon Dioxide Cycloaddition and Alcoholysis at Mild Conditions, Formula: C4H10O2, the publication is Catalysis Letters (2020), 150(5), 1408-1417, database is CAplus.

Developing highly efficient heterogeneous catalysts for cycloaddition of CO₂ and epoxides to produce cyclic carbonates is promising but challenging. In this work, a novel three-dimensional metal organic framework (MOF) with cylinder pore systems and unsaturated Zn sites has been demonstrated as potent candidate in CO₂ fixation at mild and solvent-free conditions. The Zn(atz)(bdc)_0.5, where atz = aminotriazole and H₂bdc = terephthalic, exhibits microporous nature that can regulate the catalytic interaction of active centers and substrates. The structure stability has been systematically investigated and proven to be sufficient for practical application. Furthermore, the cooperative effects of porosity, CO₂ binding affinity, activation centers, and synergism with co-catalyst have been deeply investigated. Moreover, high propylene epoxide conversion (97%) and selectivity (> 99%) have been achieved at mild conditions (60°C and 1 MPa) with excellent cycle stability. Owing to the well-defined pore system, an obvious substrates selectivity has been clearly observed A possible catalytic mechanism has been proposed and verified by DFT calculations Furthermore, the prepared Zn-MOF can also be used as an efficient heterogeneous catalyst for the reaction of epoxides with alcs. to produce β-alkoxy alc.

Catalysis Letters published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Formula: C4H10O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Zhang, Xiaochen published the artcileEpoxide hydrolysis and alcoholysis reactions over crystalline Mo-V-O oxide, Product Details of C4H10O2, the publication is RSC Advances (2016), 6(75), 70842-70847, database is CAplus.

Crystalline Mo-V-O oxides have been used as a catalyst for the hydrolysis and alcoholysis of propylene oxide to diols such as 1,2-cyclohexanediol, 1-phenylethane-1,2-diol, 3-chloro-1,2-propanediol, etc. and ethers such as 1-(tert-butoxy)propan-2-ol, 1-(cyclohexyloxy)propan-2-ol, 1-(benzyloxy)propan-2-ol, etc. resp. Relationships between the active crystal facet, the acidity of Mo-V-O catalysts and the activity have been established. The results indicate that the a-b plane is the active facet for the hydrolysis reaction.

RSC Advances published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C9H7NO2, Product Details of C4H10O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Xiao, Juan-Ding published the artcileModulating acid-base properties of ZIF-8 by thermal-induced structure evolution, Formula: C4H10O2, the publication is Journal of Catalysis (2022), 165-173, database is CAplus.

Development of strategies to tune up acid-base property of MOF-based materials at the at. level has been recognized as one of the fascinating research topics in MOF chem. Traditional methodologies focus on the fine adjustment of the elaborately chosen metal nodes and organic linkers, as well as the post-synthetic modification of MOF pores and skeletons, which are diversified while complicated. Here, the acid-base property of ZIF-8-T has been tuned simply by changing the calcination temperature (T). The catalysts show negligible Lewis acidity when T lower than 540°C; whereas an gradually increased Lewis acidity appears with calcination T higher than this value. It is found that ZIF-8-610 catalyst calcined at 610°C offers a superior catalytic activity, 200.1 h-1 in the hydroxylation of epoxide. The high-performance catalyst exhibit both acid and base sites, which show synergistical effect in the catalytic reaction. The work provides us a deeper understanding on the “structure-acid-base property” relation in MOFs and MOF-derived catalysts.

Journal of Catalysis published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C8H13NO3, Formula: C4H10O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Rorije, E. published the artcileRelative parameter sensitivity in prenatal toxicity studies with substances classified as developmental toxicants, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Reproductive Toxicology (2012), 34(2), 284-290, database is CAplus and MEDLINE.

Developmental toxicity testing according to the globally standardized OECD 414 protocol is an important basis for decisions on classification and labeling of developmental toxicants in the European Union (EU). This test requires relatively large animal numbers, given that parental and offspring generations are involved. In vitro assay designs and systems biol. paradigms are being developed to reduce animal use and to improve prediction of human hazard. Such approaches could benefit from the long-term experience with animal protocols and more specifically from information on the relevance of effects observed in these tests for developmental toxicity. Therefore, we have analyzed relative parameter sensitivity in 22 publicly available developmental toxicity studies, representing about one third of all classified developmental toxicants under European legislation. Maternal and fetal weight effects and fetal survival were most often affected parameters at the developmental Lowest Observed Adverse Effect Level (dLOAEL), followed by skeletal malformations. Specific end points such as cleft palate were observed in fewer studies at dLOAEL, but if observed may have been crucial in classification and labeling decisions. These results are similar to earlier studies using different selections of chems., indicating that in general classified developmental toxicants have a similar pattern of effects at the dLOAEL as chems. in general. These findings are discussed within the perspective of the development of innovative alternative approaches to developmental hazard assessment.

Reproductive Toxicology published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C4H10O2, Recommanded Product: 2-Methoxypropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem

Yin, Wang published the artcileCatalytic upgrading of sugar fractions from pyrolysis oils in supercritical mono-alcohols over Cu doped porous metal oxide, COA of Formula: C4H10O2, the publication is Applied Catalysis, B: Environmental (2015), 56-65, database is CAplus.

The authors report on the catalytic valorization of sugar fractions, obtained by aqueous phase extraction of fast pyrolysis oils, in supercritical MeOH (scMeOH) and EtOH (scEtOH) over a Cu doped porous metal oxide (Cu-PMO). The product mixtures obtained are, in principle, suitable for direct co-feeding in MeOH to hydrocarbon (MTH) processes, as fuel additives, or can be further fractionated or transformed to useful bulk chems. The main components of the obtained product mixtures in scMeOH are aliphatic mono-alcs. (51%), diols (22%), esters (15%), ethers (9%) and furanics (3%). Similar product suite is obtained by converting concentrated, 15% sugar fractions with added 50 bar H₂ in scEtOH. The extensive depolymerization of the sugar polymers and oligomers contained in the sugar fraction is verified by gel permeation chromatog. (GPC) and product stability upon catalytic treatment is confirmed by TGA. Model compound studies, using levoglucosan and D-cellobiose allow for more specific insight into the chem. pathways taking place during these transformations. The catalyst is characterized by various techniques, including XRD, NH₃-TPD, BET, and TEM. The stability of the catalyst using 5% sugar fraction in scMeOH is also evaluated.

Applied Catalysis, B: Environmental published new progress about 1589-47-5. 1589-47-5 belongs to ethers-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ether, name is 2-Methoxypropan-1-ol, and the molecular formula is C13H11NO, COA of Formula: C4H10O2.

Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem