Category: 91-16-7

Liu, E. published the artcileStudy on the relationship between structure and fluorescence properties of anthracene derivatives, Category: ethers-buliding-blocks, the publication is Journal of Molecular Structure (2022), 132029, database is CAplus.

Five anthracene derivatives using quinoa perch ether and 2-acetaldehyde pyridine or 4-acetaldehyde pyridine as raw material were designed and synthesized. Their single crystals were obtained and determined by X-ray diffraction anal. and their Hirshfeld surface anal. had also been done. Different compounds with different structures could be obtained from the same raw material by changing the reaction conditions and the concentration of acid. In terms of performance, the hydroanthracene compounds did not produce fluorescence, but the anthracene compounds have strong fluorescence properties. At the same time, Hirschfeld surface anal. was used in this paper to study the interaction between mols. In crystals with visual graphics, which had a certain scientific significance to the identification of close contacts between atoms in neighboring mols. and supramol. forces in mols.

Journal of Molecular Structure published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C8H10O2, Category: ethers-buliding-blocks.

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

Hu, Liqun published the artcileAn Intermolecular Hydroarylation of Highly Deactivated Styrenes Catalyzed by Re₂O₇/HReO₄ in Hexafluoroisopropanol, Synthetic Route of 91-16-7, the publication is ACS Catalysis (2022), 12(10), 5857-5863, database is CAplus.

Here, authors describe an activation mode for unactivated alkenes on the basis of a synergy between Re₂O₇/HReO₄ and hexafluoroisopropanol (HFIP). Highly electron-deficient styrenes have been activated to effect a challenging intermol. hydroarylation with different arenes to give a variety of diarylalkanes in high efficiency. This method is characterized by mild reaction condition, broad substrate scope, high chem. yields, and minimal waste generation. The potential synthetic application of this methodol. was exemplified by the efficient synthesis of a retinoic acid receptor (RAR) agonist. DFT calculations and deuterium-labeling experiments were conducted to elucidate the reaction mechanism, and both confirmed the critical role of HFIP, which significantly reduced the energetical barriers for several key steps of this transformation via a network of hydrogen bonding to perrhenate anion with two equivalent of HFIP.

ACS Catalysis published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C8H10O2, Synthetic Route of 91-16-7.

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

Lei, Zepeng published the artcileHighly stable dioxin-linked metallophthalocyanine covalent organic frameworks, Computed Properties of 91-16-7, the publication is Chinese Chemical Letters (2021), 32(12), 3799-3802, database is CAplus.

We report a series of highly stable metallophthalocyanine-based covalent organic frameworks (MPc-dx-COFs) linked by robust 1,4-dioxin bonds constructed through nucleophilic aromatic substitution (S_NAr) reaction. The chem. structures and crystallinity of the COFs largely remain unchanged even after treating with boiling water (90 °C), concentrated acids (12 mol/L HCl) or bases (12 mol/L NaOH), oxidizing (30% H₂O₂) or reducing agents (1 mol/L NaBH₄) for three days due to their stable M-Pc building blocks and resilient dioxin linkers. With metalated phthalocyanine active sites regularly arranged in the stable framework structures, MPc-dx-COFs can be directly used as efficient electrocatalysts for the oxygen reduction reaction (ORR) without pyrolysis treatment that has commonly been used in previous studies.

Chinese Chemical Letters published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C8H10O2, Computed Properties of 91-16-7.

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

D’Orsi, Rosarita published the artcileKumagawa and Soxhlet Solvent Fractionation of Lignin: The Impact on the Chemical Structure, Quality Control of 91-16-7, the publication is ACS Omega (2022), 7(29), 25253-25264, database is CAplus and MEDLINE.

We investigated the effects of solvent fractionation on the chem. structures of two com. tech. lignins. We compared the effect of Soxhlet and Kumagawa extraction The aim of this work was to compare the impact of the methods and of the solvents on lignin characteristics. Our investigation confirmed the potentialities of fractionation techniques in refining lignin properties and narrowing the mol. weight distribution. Furthermore, our study revealed that the Kumagawa process enhances the capacity of oxygenated solvents (ethanol and THF) to extract lignin that contains oxidized groups and is characterized by higher average mol. weights Furthermore, the use of THF after ethanol treatment enabled the isolation of lignin with a higher ratio between carbonyl and other oxidized groups. This result was confirmed by attenuated total reflectance-Fourier transform IR spectroscopy (ATR-FTIR), ¹³C NMR and two-dimensional (2D) NMR spectroscopies, gel permeation chromatog. (GPC), and anal. pyrolysis-gas chromatog.-mass spectrometry (GC-MS) anal. UV-visible (UV-vis) spectra evidenced the enrichment in the most conjugated species observed in the extracted fractions. Elemental analyses pointed at the cleavage of C-heteroatom bonds enhanced by the Kumagawa extraction

ACS Omega published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C8H10O2, Quality Control of 91-16-7.

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

Chang, Meng-Yang published the artcileGram-Scale Synthesis of Substituted Triarylmethanes, Quality Control of 91-16-7, the publication is Synthesis, database is CAplus.

A high-yield, open-vessel route for the facile-operational, gram-scale synthesis of functionalized triarylmethanes (TRAMs) was described via silica-coated magnetic nanoparticles of modified polyphosphoric acid (NiFe₂O₄@SiO₂-PPA)-mediated intermol. Friedel-Crafts reaction of substituted aryl aldehydes with 2 equiv of oxygenated arenes under environmentally friendly reaction conditions. Among the overall reaction process, only water was generated as the byproduct. Various reaction conditions were investigated for efficient transformation.

Synthesis published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C8H10O2, Quality Control of 91-16-7.

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

Huang, Mingzheng published the artcileComparative characterization and sensory significance of volatile compounds in Rosa roxburghii Tratt fruit from five geographic locations in Guizhou, China, Application of 1,2-Dimethoxybenzene, the publication is Flavour and Fragrance Journal (2022), 37(3), 163-180, database is CAplus.

Rosa roxburghii Tratt (Chestnut rose) is native to China where it is cultivated for its strongly aromatic hips (pseudo fruits); locally known as cili. Increasing interest in cili for food and beverage products prompted an evaluation of its aroma compounds and the influence of geog. source. Accordingly, the volatile compounds in cili from five locations in Guizhou province were analyzed by headspace-solid-phase microextraction coupled with gas chromatog.-mass spectrometry. Sixty-seven volatile compounds were identified. Principal component anal. distinguished three sample groups by geog. source. The aroma of cili juice from each location was characterized by quant. descriptive anal. using six odor descriptors. Cili aroma was predominantly sweet/fruity, floral and green, but geog. source significantly influenced the intensity of the sweet/fruity and floral notes. Odor activity analyses indicated that 40 volatile compounds contribute appreciably to the aroma of cili. Of those compounds, only ten esters, two aldehydes, one alc. and one aromatic compound were common to all regional samples. Those findings extend the range of volatiles detected in cili. These results identify those that are present in odor active amounts and provide the first evidence of the impact of geog. source on the aroma and flavor of cili.

Flavour and Fragrance Journal published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C8H10O2, Application of 1,2-Dimethoxybenzene.

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

Wang, Yixuan published the artcileWidely targeted metabolomics analysis of enriched secondary metabolites and determination of their corresponding antioxidant activities in Elaeagnus angustifolia var. orientalis (L.)Kuntze fruit juice enhanced by Bifidobacterium animalis subsp. Lactis HN-3 fermentation, Recommanded Product: 1,2-Dimethoxybenzene, the publication is Food Chemistry (2022), 131568, database is CAplus and MEDLINE.

Elaeagnus angustifolia var. orientalis (L.)Kuntze fruit contains a large number of naturally occurring mols. present as glycoside, methylated, and Me ester conjugates, which should be hydolyzed or transformed to become bioactive forms. For this purpose, Bifidobacterium animalis subsp. lactis HN-3 was selected to ferment Elaeagnus angustifolia var. orientalis (L.)Kuntze fruit juice (EOJ). After fermentation, the total phenolic content (TPC) and antioxidant capacity of the EOJ increased significantly compared to the non-fermented EOJ. Using widely-targeted metabolomics anal., polyphenolic compounds involved in the flavonoid biosynthetic pathway were determined to be up-regulated in the fermented EOJ. In addition, the metabolites generated by 8 deglycosidation, 5 demethylation, 5 hydrogenation, and 28 other reactions were detected in higher concentrations in the fermented EOJ compared to the non-fermented EOJ. Interestingly, these up-regulated metabolites have higher antioxidant and other biol. activities than their metabolic precursors, which provide a theor. basis for the development of Bifidobacterium-fermented plant products with stronger functional activities.

Food Chemistry published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C9H9F5Si, Recommanded Product: 1,2-Dimethoxybenzene.

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

Wang, Chao published the artcileSalting-out re-distillation combined with sensory-directed analysis to recover odor-active compounds for improving the flavor quality of instant Pu-erh tea, Safety of 1,2-Dimethoxybenzene, the publication is Food Chemistry: X (2022), 100310, database is CAplus and MEDLINE.

The objective of this study was to develop an effective recovery technol. of odor-active compounds (OACs) to improve the flavor quality of instant Pu-erh tea (IPT) based on their released behaviors. Salting-out re-distillation (SRD) combined with sensory-directed anal. was developed. The contributing factors, including the soaking time of tea, recovery volume of condensed water of first distillation, amount of sodium chloride, recovery volume of condensed water of SRD, and re-use times of sodium chloride, were studied systematically. Under optimized conditions, 41 OACs were recovered in the first distillation, and the total recovery rate was 83.94%. Forty-one OACs were recovered via SRD, and the total recovery rate reached 72.29%, significantly better than membrane method (33.46%). The IPT prepared by adding OACs that recovered via SRD showed strong aroma attributes intensities and good coordination. This developed method can provide a more effective scheme to improve the flavor quality of IPT.

Food Chemistry: X published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C13H16O2, Safety of 1,2-Dimethoxybenzene.

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

Wang, Chao published the artcileEffects of electrostatic spray drying on sensory qualities, aroma profile and microstructural features of instant Pu-erh tea, Category: ethers-buliding-blocks, the publication is Food Chemistry (2022), 373(Part_B), 131546, database is CAplus and MEDLINE.

The sensory qualities, aroma profile, and microstructural features of instant Pu-erh teas (IPTs) produced by electrostatic spray drying (ESD) were evaluated by sensory and instrumental analyses and compared with those produced by other drying methods (freeze-drying [FD], vacuum drying [VD], and conventional spray drying [CSD]). The sensory qualities of ESDIPT were similar to those of FDIPT, and better than those of VDIPT and CSDIPT. Eighty-eight volatiles were detected in all IPTs, and 45 odor-active compounds were captured. Most of their OAVs were higher in ESDIPT than in VDIPT and CSDIPT but were lower than those in FDIPT. Dihydro-β-ionone had the highest OAV. Aroma recombination experiments were performed to verify the identification results. ESDIPT was present in the shape of microspheres with many regular concave surfaces, which was different from those treated by other drying methods. In terms of sensory quality and productivity, ESD would be a potential method for IPT production

Food Chemistry published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C20H17FO4S, Category: ethers-buliding-blocks.

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

Starace, Anne K. published the artcilePredicting Catalytic Pyrolysis Aromatic Selectivity from Pyrolysis Vapor Composition Using Mass Spectra Coupled with Statistical Analysis, Recommanded Product: 1,2-Dimethoxybenzene, the publication is ACS Sustainable Chemistry & Engineering (2022), 10(1), 234-244, database is CAplus.

The behavior of fast pyrolysis (FP) and catalytic FP (CFP) of 20 renewable feedstocks was studied in a microscale reactor with mol. beam mass spectral anal. of products generated. A partial least-squares (PLS) model was constructed based on the FP vapor spectra that predicts the aromatic selectivity when upgrading over a ZSM-5 catalyst. Addnl., principal component anal. of both FP and CFP spectra was performed for comprehensive spectral anal. This work highlighted the value of vapor-phase mass spectral screening to predict the subsequent feedstock performance and demonstrated that the quantity of coke deposited on the catalyst is not a reliable measure of catalyst deactivation when the feedstock type is varied.

ACS Sustainable Chemistry & Engineering published new progress about 91-16-7. 91-16-7 belongs to ethers-buliding-blocks, auxiliary class Benzene,Ether,Inhibitor,Inhibitor,Inhibitor, name is 1,2-Dimethoxybenzene, and the molecular formula is C14H14, Recommanded Product: 1,2-Dimethoxybenzene.

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