Tag: M.W=50-100

Lu, Zijie published the artcileElaboration of microporous CeO₂ thin layers having nanocrystallites network controlled by Pluronic P123: Impact of key experimental parameters, Related Products of ethers-buliding-blocks, the publication is Journal of Sol-Gel Science and Technology (2020), 94(1), 174-185, database is CAplus.

Thus, a compromise between the crystallization and the preservation of the porosity needs to be found. This loss of nanocrystallites organization is more drastic in the direction perpendicular to the surface and less pronounced along the surface. Finally, an increase of the thermal treatment temperature from 300 to 1000°C leads to the formation of fluorite-like dioxide material coupled with a loss of nanocrystallites organization and porosity due to the increase of the size of the crystallites. The results show that the organization of the nanoparticles is possible for a sol ageing time lower than 16 days and that the size of the mesophase within the thin layer increases with the relative humidity fixed during the film deposition. The impact of key exptl. parameters, i.e., the sol ageing, the relative humidity (RH), the thermal treatment, on the thin layer elaboration were investigated. Microporous ceria thin films having nanocrystallites network were synthesized by evaporation-induced self-assembly process, using P123 amphiphilic copolymer as structure-directing agent.

Journal of Sol-Gel Science and Technology 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, Related Products of ethers-buliding-blocks.

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

Wang, Baohe published the artcileIsobaric Vapor-Liquid Equilibria for (Water + 1-Methoxy-2-propanol), (Water + 2-Methoxy-1-propanol), and (1-Methoxy-2-propanol + 2-Methoxy-1-propanol) at 101.3 kPa, Related Products of ethers-buliding-blocks, the publication is Journal of Chemical & Engineering Data (2017), 62(4), 1341-1347, database is CAplus.

Isobaric vapor-liquid equilibrium (VLE) data were measured at 101.3 kPa for three binary systems (water + 1-methoxy-2-propanol), (water + 2-methoxy-1-propanol), and (1-methoxy-2-propanol + 2-methoxy-1-propanol) by using a modified Rose-Williams still, in which both vapor and liquid phases circulate continuously. Pos. deviations and azeotropic behaviors were found in systems (water + 1-methoxy-2-propanol) and (water + 2-methoxy-1-propanol), while a neg. deviation was found in the system (1-methoxy-2-propanol + 2-methoxy-1-propanol). All of the exptl. VLE data for the three binary systems were tested and verified to be thermodynamically consistent by the Herington area test and Van Ness point test. The nonideality of the vapor phase was corrected by the Hayden-O’Connell method. The exptl. isobaric VLE data were correlated by using the universal quasichem. (UNIQUAC) and nonrandom two-liquid (NRTL) models, and the binary interaction parameters for the two models were reported. Results showed that both models correlated the exptl. data with good accuracy.

Journal of Chemical & Engineering Data 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, Related Products of ethers-buliding-blocks.

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

Schmidtchen, Franz P. published the artcilePolyprenylpyridinols. Synthesis of piericidin analogs, Recommanded Product: 2-Methoxyacetamide, the publication is Journal of the American Chemical Society (1977), 99(21), 7014-19, database is CAplus and MEDLINE.

The piericidin A analogs I (n = 1, 2, 3, 9) and II were prepared for structure-activity studies on coenzyme Q inhibitors. To prepare the nucleus, 3-methoxyacetylamino-2-methylacrylonitrile was cyclized to a 4-amino-2-pyridone which Me₃O⁺ BF₄^– converted to the 4-amino-2,3-dimethoxypyridine. Bromination of the acylated amine formed the 6-bromo derivative in which the 4-amino group was then replaced by hydroxy and the latter blocked by conversion to its benzyl ether with a benzylisourea. Transmetalation now gave the 6-lithio compound which was coupled with various prenyl bromides, leading to introduction of all trans polyprenyl side chains. The final 4-pyridinols were formed on selective debenzylation with butyl mercaptide. All the polyprenylpyridinols inhibited coenzyme Q electron transport to some extent, with the farnesyl analog having the same activity as piericidin A.

Journal of the American Chemical Society published new progress about 16332-06-2. 16332-06-2 belongs to ethers-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Amide,Ether, name is 2-Methoxyacetamide, and the molecular formula is C3H7NO2, Recommanded Product: 2-Methoxyacetamide.

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

Breno, Kerry L. published the artcileOrganometallic Chemistry in Aqueous Solution. Hydration of Nitriles to Amides Catalyzed by a Water-Soluble Molybdocene, (MeCp)₂Mo(OH)(H₂O)⁺, Recommanded Product: 2-Methoxyacetamide, the publication is Organometallics (2003), 22(6), 1203-1211, database is CAplus.

[Cp’₂Mo(μ-OH)₂MoCp’₂]²⁺ (1) (Cp’ = η⁵-CH₃C₅H₄) is a precatalyst for the hydration of nitriles in aqueous solution under mild conditions (∼80°). Among the nitriles hydrated were acetonitrile, isobutyronitrile, benzonitrile, 3-hydroxypropionitrile, 3-bromopropioamide, 4-cyanopyridine, succinonitrile, Me cyanoacetate, 2-methoxyacetonitrile, and acrylonitrile. Except in the case of 2-methoxyacetonitrile, hydrolysis of the resulting amide products did not occur. Hydration of the C:C double bond did not occur in acrylonitrile, but hydrolysis of ester and ether linkages did occur in nitriles containing those functional groups. The apparent rate constants and turnover frequencies of the catalytic reactions were determined using an iterative kinetics-fitting program. The rates and turnover frequencies are comparable to those reported for many homogeneous nitrile hydration catalysts described in the literature. In aqueous solution, 1 is in equilibrium with [Cp’₂Mo(OH)(H₂O)]⁺ (2), and this monomer is proposed to be the active hydration catalyst. The hydration is proposed to occur by an intramol. attack of a hydroxide ligand on a coordinated nitrile. The hydration reaction is irreversibly inhibited by product and reversibly inhibited by substrate (nitrile).

Organometallics published new progress about 16332-06-2. 16332-06-2 belongs to ethers-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Amide,Ether, name is 2-Methoxyacetamide, and the molecular formula is C3H7NO2, Recommanded Product: 2-Methoxyacetamide.

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

Breno, Kerry L. published the artcileAqueous Phase Organometallic Catalysis Using (MeCp)₂Mo(OH)(H₂O)⁺. Intramolecular Attack of Hydroxide on Organic Substrates, Quality Control of 16332-06-2, the publication is Organometallics (2004), 23(8), 1738-1746, database is CAplus.

The hydrolysis of esters and difunctional ethers catalyzed by Cp’₂Mo(OH)(H₂O)⁺ (1) (Cp’ = η⁵-C₅H₄CH₃) and the stoichiometric oxidation of CO to CO₂ in the presence of 1 are described. These reactions, combined with the previously reported nitrile hydrations and phosphate esters hydrolyzes catalyzed by 1, demonstrate that 1 is an effective homogeneous catalyst for hydration, hydrolysis, and oxidation reactions in aqueous solution under mild conditions (pH ∼ 7, ∼ 80°). Each reaction is proposed to proceed by intramol. attack of the hydroxide ligand on a bound substrate. The intramol. nature of the reaction is supported by the ester hydrolysis activation parameters (ΔH^⧧ = 5.9 ± 0.7 kcal/mol and ΔS^⧧ = -48 ± 9 eu), the lack of H/D exchange, and the significant increase (10⁶-10⁸) in the rate of hydrolysis over uncatalyzed hydrolysis.

Organometallics published new progress about 16332-06-2. 16332-06-2 belongs to ethers-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Amide,Ether, name is 2-Methoxyacetamide, and the molecular formula is C3H7NO2, Quality Control of 16332-06-2.

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

Manjunathan, Pandian published the artcileExploring tailor-made Bronsted acid sites in mesopores of tin oxide catalyst for β-alkoxy alcohol and amino alcohol syntheses, Recommanded Product: 2-Methoxypropan-1-ol, the publication is Scientific Reports (2021), 11(1), 15718, database is CAplus and MEDLINE.

The generation of Bronsted (Sn-OH) and Lewis (coordinatively unsaturated metal centers) acidic sites on the solid surface is a prime demand for catalytic applications. Mesoporous materials are widely employed as catalysts and supports owing to their different nature of acidic sites. Nevertheless, the procedure adopted to generate acid functionalities in these materials involves tedious steps. Herein, we report the tunable acidic sites containing Bronsted sites with relatively varied acid strength in tin oxide by employing soft template followed by simple thermal treatment at various temperatures The readily accessible active sites, specifically Bronsted acidic sites distributed throughout the tin oxide framework as well as mesoporosity endow them to perform with exceptionally high efficiency for epoxide ring opening reactions with excellent reusability. These features promoted them to surpass stannosilicate catalysts for the epoxide ring opening reactions with alc. as a nucleophile and the study was extended to aminolysis of epoxide with the amine. The existence of relatively greater acid strength and numbers in T-SnO₂-350 catalyst boosts to produce a high amount of desired products over other tin oxide catalysts. The active sites responsible in mesoporous tin oxide for epoxide alcoholysis were studied by poisoning the Bronsted acidic sites in the catalyst using 2,6-lutidine as a probe mol.

Scientific Reports 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

Kumaresan, R. published the artcileSynthesis and evaluation of N,N-di-alkyl-2-methoxyacetamides for the separation of U(VI) and Pu(IV) from nitric acid medium, COA of Formula: C3H7NO2, the publication is Radiochimica Acta (2017), 105(9), 699-707, database is CAplus.

The homologs of N,N-di-alkyl-2-methoxyacetamides (DAMeOA) having three different alkyl chains varying from hexyl to decyl (C₆, C₈ and C₁₀) were synthesized and characterized by NMR and IR spectral analyses. Extraction behavior of U(VI) and Pu(IV) from nitric acid medium in a solution of 0.5 M of DAMeOA in n-dodecane (n-DD) was studied and the results were compared with those obtained using N,N-di-hexyloctanamide (DHOA) in n-dodecane. The effect of various parameters on the distribution ratio of U(VI) and Pu(IV) in DAMeOA was studied. The extraction of nitric acid increased with decrease in chain length of alkyl group attached to amidic nitrogen atom of DAMeOA and the conditional nitric acid extraction constant was determined The extraction of nitric acid in DAMeOA/n-DD resulted in the formation of third phase in organic phase and the third phase occurred early with DAMeOA having smaller alkyl chain length. In contrast to this, the distribution ratio (D) of U(VI) and Pu(IV) in DAMeOA/n-DD increased with increase in the concentration of nitric acid and with increase in the chain length of alkyl group attached to amidic nitrogen atom of DAMeOA. The stoichiometry of the metal – solvate was determined from the slope of extraction data. Quant. recovery of uranium and plutonium from the loaded organic phase was achieved using dilute nitric acid.

Radiochimica Acta published new progress about 16332-06-2. 16332-06-2 belongs to ethers-buliding-blocks, auxiliary class Amine,Aliphatic hydrocarbon chain,Amide,Ether, name is 2-Methoxyacetamide, and the molecular formula is C3H7NO2, COA of Formula: C3H7NO2.

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

Timofeeva, Maria N. published the artcileTuning the Catalytic Performance of Novel Composites Based on ZIF-8 and Nafen through Dimensional and Concentration Effects in the Synthesis of Propylene Glycol Methyl Ether, Related Products of ethers-buliding-blocks, the publication is European Journal of Organic Chemistry (2019), 2019(26), 4215-4225, database is CAplus.

Zeolitic imidazolate framework (ZIF-8, Zn(2-meIm)₂) and composites based on ZIF-8 and alumina nanofibers (Nafen^TM), i.e. ZIF-8/Nafen, were demonstrated to be efficient heterogeneous catalysts for the reaction of methanol with propylene oxide to produce propylene glycol Me ether (PGME), which is a member of the family of glycol ether solvents used for a wide variety of consumer products and industrial applications. Both the reaction rate and the selectivity toward PGME were found to decrease with increasing crystal size of the ZIF-8 material, which was related to the change in the number of basic sites and their accessibility. The investigation of ZIF-8/Nafen composites revealed the dependence of their catalytic performance on the amount of the ZIF-8 component. In particular, the activity was affected by the crystal size of the ZIF-8 material and the nature of acid-base sites in its framework.

European Journal of Organic Chemistry 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 C6H9N3, Related Products of ethers-buliding-blocks.

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

Kerdouci, Jamila published the artcileStructure-activity relationship for the gas-phase reactions of NO₃ radical with organic compounds: Update and extension to aldehydes, Computed Properties of 1589-47-5, the publication is Atmospheric Environment (2014), 363-372, database is CAplus.

In this work is presented an extension and an update of a recently published structure-activity relationship (SAR) for the prediction of rate constants for gas-phase reactions of VOCs with NO₃ radicals (See previous version in Kerdouci et al., 2011). Such predictive tools are very useful to describe the reactivity of organic compounds in atm. models. This SAR is constructed on the group-additivity method and is based on a wide kinetic database for 185 organic compounds In addition to alkanes, alkenes and saturated and unsaturated oxygenated species already included in the first version of this SAR, this extended version comprises now aldehydes and unsaturated aldehydes. Indeed, since then, new kinetic studies have been performed for alkenals which allow the parameterization of this class of compounds In addition, since new rate constants have been measured for unsaturated ethers, the parameterization of this family of compounds has been completed. Finally, this new version of the SAR shows very good predictive capabilities with more than 90% of the exptl. rate coefficients being reproduced within a factor of two.

Atmospheric Environment 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

Kerdouci, Jamila published the artcilePrediction of rate constants for gas-phase reactions of nitrate radical with organic compounds: A new structure-activity relationship, Name: 2-Methoxypropan-1-ol, the publication is ChemPhysChem (2010), 11(18), 3909-3920, database is CAplus and MEDLINE.

A new structure-activity relationship (SAR), based on parametrization of the mol. structure according to the group-additivity method, is presented. On the basis of existing exptl. data for the degradability of approx. 150 organic compounds by the NO₃ radical, this new SAR is developed to estimate the rate constants for reactions with NO₃ radical. At night, nitrate radicals are the most important oxidant of volatile organic compounds The rate constants for their reactions are therefore essential to the understanding of VOC degradation and atm. modeling. The database used for the SAR development includes most classes of compounds such as alkanes, alkenes (acyclic and cyclic), dienes, terpenes and saturated and unsaturated oxygenated compounds (including alcs., ketones, ethers and esters). The proposed SAR shows good efficiency, as 91% of the rate constants are reproduced within a factor of two. The overall agreement between measured and predicted rate constants is very good for most of the unsaturated and saturated compounds, although for saturated alcs. it is less reliable.

ChemPhysChem 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, Name: 2-Methoxypropan-1-ol.

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