Category: 1589-47-5

Xiao, Juan-Ding published the artcileRelation Between Coordination and Lewis-Acid Property of MOF-Derived Mononuclear Zn(II) Catalyst Toward Epoxide Hydroxylation, Name: 2-Methoxypropan-1-ol, the publication is ChemCatChem (2021), 13(24), 5236-5242, database is CAplus.

Lewis-acid properties of the coordinatively unsaturated metal ions are highly relevant to the coordination environment; however, it remains a challenge to establish the coordination structure-activity relationship, especially in heterogeneous catalysis. Here, a typical metal-organic framework, ZIF-8, is selected as the precursor to prepare Lewis-acid based Zn-N/P-C mononuclear catalysts, with well-designed external structures but difference in the local coordination. The obtained mononuclear Zn(II) catalysts can not only inherit the advantages of MOF in coordination, but also simulate the homogeneous environment during the catalysis owing to the monodispersed metal sites in ZIF-8. Eventually, relation between coordination and Lewis-acid property toward epoxide hydroxylation has been illustrated. Results show the substituted coordination atom of P and the decrease of coordination number strongly enhance the Lewis-acidity of Zn²⁺, causing the TOF values changes from 8.7 to 80.1 h^-1 based on Zn content. The work affords an understanding and inspiration of coordination environment matters toward Lewis-acid catalysis in organic transformations.

ChemCatChem 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 C13H19Br2ClN2O, Name: 2-Methoxypropan-1-ol.

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

Ren, Miao-miao published the artcileSupercritical extraction and characterization of corn stover lignin, COA of Formula: C4H10O2, the publication is Huaxue Gongye Yu Gongcheng (Tianjin, China) (2012), 29(5), 52-57, database is CAplus.

ScCO₂/ethanol-water was used to extract lignin from corn stover. Lignin product was obtained from the extraction by precipitation The composition of the extract and the structure of the extracted lignin product were analyzed using GC-MS, FTIR and UV. Thermogravimetric anal. was conducted to study the thermal stability of extracted lignin. The results showed that the extracted lignin appeared to show the typical lignin structures and to decompose mostly between 180°C and 500°C. The three dimension supramol. structure of lignin was greatly broken down, primarily through the cleavage of ether linkages. The internal bonds of lignin-hemicellulose were not hydrolyzed completely, which leading to the extracted lignin containing a certain amount of carbohydrate.

Huaxue Gongye Yu Gongcheng (Tianjin, China) 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, COA of Formula: C4H10O2.

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

Liu, Ning published the artcileCTAB-P123-assisted synthesis of orderly mesoporous KF/Al-Ce-SBA-15 solid base and its catalytic application, HPLC of Formula: 1589-47-5, the publication is Yingyong Huaxue (2019), 36(11), 1294-1300, database is CAplus.

The orderly mesoporous KF/Al-Ce-SBA-15 (KF/ACS) solid bases were successfully prepared with cetyltrimethylammonium bromide (CATB)- poly (ethylene oxide)/poly (propylene oxide)/poly (ethylene oxide) triblock copolymer (P123) as the dual-template and KF as the modifier in two steps. The structure and property of the obtained catalysts were characterized by X-ray diffraction (XRD), N₂ adsorption-desorption, transmission electron microscopy (TEM), SEM (SEM) and CO₂-temperature programmed desorption (TPD). The results illustrated that the KF/ACS catalysts possess both an ordered mesostructure and superbasicity when the introduced Al/Ce at. ratio is 0.12 and the loading amounts (mass fraction) of KF is 10%. The catalytic activity of the prepared materials was evaluated in the ring-opening reaction of propylene oxide (PO) with methanol. It shows excellent catalytic performance exhibiting 92.0% yield of propylene glycol monomethyl ether (PM) and 96.1% selectivity to 1-methoxy-2-propanol (PPM) and the byproducts of dipropylene glycol Me ether was effectively inhibited.

Yingyong Huaxue 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, HPLC of Formula: 1589-47-5.

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

Zeng, Bo published the artcileOn the origin of nitrogen-containing promoters in the cobalt-catalyzed methoxycarbonylation of epoxides, COA of Formula: C4H10O2, the publication is Applied Catalysis, A: General (2021), 118291, database is CAplus.

The detailed promotion mechanism of nitrogenous compounds in the cobalt-catalyzed methoxycarbonylation of epoxides has not been studied to date. Herein, we present the intrinsic correlation between nitrogenous promoters and activity and selectivity in the alkoxycarbonylation of epoxides by a comprehensive in situ IR spectroscopy and DFT studies. In situ IR spectroscopy confirmed the acid-base neutralization of the nitrogenous promoters and HCo(CO)₄, resulting in reduction of the acidity of the catalyst. With the reduced acid-derived activity for formation of ethers as byproducts, the selectivity of desired esters was increased. DFT calculations showed that a nitrogenous base could facilitate the methanolysis of cobalt-acyl species with lowered activation energy, which is considered to be the rate-determining step in the catalytic cycle. As a result, the reaction activity towards carbonylation was also improved by nitrogenous promoters. The present studies will provide new insights to the long-term confusing problems in epoxides carbonylation.

Applied Catalysis, A: General 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 C5H6BNO2, COA of Formula: C4H10O2.

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

Liu, Kai published the artcileOne-Pot Synthesis of Dimethyl Carbonate over a Binary Catalyst of an Ionic Liquid and an Alkali Carbonate under Low Pressure, Recommanded Product: 2-Methoxypropan-1-ol, the publication is ACS Omega (2021), 6(21), 13839-13846, database is CAplus and MEDLINE.

A mild and highly efficient approach has been developed for the one-pot synthesis of di-Me carbonate (DMC) from epoxide, carbon dioxide, and methanol under low initial pressure. The key to the successful transformation is the use of a bicomponent catalytic system composed of a hydroxyl-functionalized ionic liquid and an alkali carbonate. This bicomponent catalytic system demonstrated excellent reusability in four runs. Under the optimal reaction conditions, a 64% yield of DMC from propylene oxide and an 81% yield of DMC from ethylene oxide were obtained.

ACS Omega 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

Wang, Gang published the artcileInfluence of impurities in a methanol solvent on the epoxidation of propylene with hydrogen peroxide over titanium silicalite-1, Name: 2-Methoxypropan-1-ol, the publication is Catalysts (2020), 10(1), 15, database is CAplus.

The recycled methanol solvent of the HPPO (liquid-phase epoxidation of propylene and hydrogen peroxide to propylene oxide) process usually contains many kinds of trace impurities, such as fusel alc., aldehyde, ketone, ester, acetal, and amine. In this study, the influence of these impurities on the catalytic performance of titanium silicalite-1 (TS-1) in the liquid-phase epoxidation of propylene with H₂O₂ was investigated with a batch reactor and simulated methanol solvents. The results show that amine and acetone are the most hazardous impurities, as they could remarkably suppress the conversion of H₂O₂. Furthermore, competitive adsorption experiments and IR and UV-Raman spectroscopic studies indicate that the suppression effect of impurities on the catalytic activity of TS-1 can be attributed to the competitive adsorption of the impurities on the tetra-coordination framework Ti sites. With this funding, the suppression mechanism of different impurities in a methanol solvent on the catalytic activity of TS-1 in the liquid-phase epoxidation of propylene was discussed.

Catalysts 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 C12H17NO2, Name: 2-Methoxypropan-1-ol.

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

Wang, Gang published the artcileLiquid-Phase Epoxidation of Propylene with H₂O₂ over TS-1 Zeolite: Impurity Formation and Inhibition Study, Category: ethers-buliding-blocks, the publication is Industrial & Engineering Chemistry Research (2021), 60(32), 12109-12122, database is CAplus.

The liquid-phase epoxidation of propylene with H₂O₂ over titanium silicalite-1 (TS-1) zeolite was investigated in detail with a focus on the formation and inhibition of various trace impurities like acetaldehyde, propionaldehyde, acetone, hydroxyacetone, acetals, esters, etc. The results showed that the formation of trace impurities involved the transformation of propylene oxide (PO), its oxidation/isomerization/ring-opening (solvolysis and hydrolysis) byproducts, methanol solvent, and even propylene. Roughly speaking, the epoxidation conditions, viz., low temperature, short residence time, and slightly alk. reaction medium, that are beneficial to suppress the ring-opening byproducts of PO, were seen facilitating the inhibition of trace impurities as well. To lower the trace impurities via modification of the TS-1 catalyst, the hydrothermal modification of TS-1 with organic amines such as amino-2-propanol (MIPA) was attempted and its effectiveness was demonstrated. The TS-1 zeolite suitably modified by MIPA exhibited abundant Ti-OH groups (3672 cm^-1) together with remarkably decreased PO adsorption.

Industrial & Engineering Chemistry Research 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 C9H7NO3, Category: ethers-buliding-blocks.

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

Huang, Jinfeng published the artcileSimultaneous determination of glycol ethers and their acetates in cosmetics by gas chromatography with mass spectrometry, SDS of cas: 1589-47-5, the publication is Journal of Separation Science (2018), 41(11), 2354-2359, database is CAplus and MEDLINE.

A gas chromatog. with mass spectrometry method was developed for the simultaneous determination of ten kinds of glycol ethers and their acetates in cosmetics. The samples were extracted with methanol/ethyl acetate (80:20, volume/volume), further treated with vortex and ultrasound, and analyzed by gas chromatog. with mass spectrometry. The concentration of each analyte was calibrated by the external standard method. Under the optimal conditions, the analytes showed linear relationship in the range of 0.05-25 mg/L with determination coefficients larger than 0.9987. The limits of detection and quantification were in the range of 0.09-0.59 and 0.31-1.95 mg/kg, resp. The average recoveries of three spiked levels were 80.2-105.4% with intra- and interday precisions of 1.1-6.3 and 1.9-6.5%, resp. Method validation from different labs confirmed the satisfactory recoveries and precisions. This method shows advantages of simple, high sensitivity, and high recovery, which can be applied to the detection of glycol ethers and acetates in cosmetics.

Journal of Separation Science 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, SDS of cas: 1589-47-5.

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

Cai, Cheng published the artcileComparison of Two Acid Hydrotropes for Sustainable Fractionation of Birch Wood, Recommanded Product: 2-Methoxypropan-1-ol, the publication is ChemSusChem (2020), 13(17), 4649-4659, database is CAplus and MEDLINE.

This study reports on a comparative study of acid hydrotropic fractionation (AHF) of birch wood using maleic acid (MA) and p-toluenesulfonic acid (p-TsOH). Under the same level of delignification, lignin dissolved by MA is much less condensed with a higher content of ether aryl β-O-4 linkages. Lignin depolymerization dominated in MA hydrotropic fractionation (MAHF) and resulted in a single lower mol. weight peak, in contrast to the competitive depolymerization and repolymn. in p-TsOH AHF with a bimodal distribution. The less condensed MA-dissolved lignin facilitated catalytic conversion to monophenols. Carboxylation of residual lignin in fractionated cellulosic water-insoluble solids (WISs) enhanced enzymic saccharification by decreasing nonproductive cellulase binding to lignin. At a low cellulase loading of 10 FPU g^-1 glucan, saccharification of WIS-M_T120 from MAHF at 120°C was 95% compared with 48% for WIS-P_T85 from p-TsOH AHF at 85°C under the same level of delignification of 63%. Residual lignin carboxylation also facilitated nanofibrillation of WIS for producing lignin-containing cellulose nanofibrils (LCNFs) through an enhanced lignin lubrication effect, which substantially decreases fibrillation energy. LCNFs from only one pass of microfluidization of WIS-M_T120 have the same morphol. as those from WIS-P_T85 after three passes. MA also has a lower solubility and higher minimal hydrotropic concentration, which facilitated acid recovery. MA is U. S. Food and Drug Administration (FDA)-approved as an indirect food additive, affording significant advantages compared with p-TsOH for biorefinery applications.

ChemSusChem 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

Zhang, Wenyu published the artcileFT-IR study of propylene oxide adsorption on metal oxides, Application of 2-Methoxypropan-1-ol, the publication is Advanced Materials Research (Durnten-Zurich, Switzerland) (2013), 169-173, 6 pp., database is CAplus.

The adsorption of propylene oxide (PO) onto MgO, ZnO and Al₂O₃ was investigated by using in situ-IR measurements. Detailed mechanisms for PO adsorption onto these metal oxides are proposed. It was found that the PO epoxide ring exhibits two opening tendencies, depending on the acid-base properties of the metal oxide. PO adsorbed onto MgO is preferentially opened at the O-C(1) bond. The epoxide ring provides two ways to open, at the O-C(1) or the O-C(2) bond on Al₂O₃. PO adsorbed onto ZnO showed no chem. adsorption on its surface.

Advanced Materials Research (Durnten-Zurich, Switzerland) 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 C15H24S, Application of 2-Methoxypropan-1-ol.

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