Category: ethers-buliding-blocks

On May 1, 2009, Wild, Andreas; Egbe, Daniel A. M.; Birckner, Eckhard; Cimrova, Vera; Baumann, Reinhard; Grummt, Ulrich-Walter; Schubert, Ulrich S. published an article.Computed Properties of 146370-51-6 The title of the article was Anthracene- and thiophene-containing MEH-PPE-PPVs: Synthesis and study of the effect of the aromatic ring position on the photophysical and electrochemical properties. And the article contained the following:

This contribution reports on the synthesis and characterization of thiophene- (P1, P2, and P3) and anthracene- (P4 and P5) containing PPE-PPV [poly(phenylene-ethynylene)-poly(phenylenevinylene)] copolymers. The thermostable, soluble and film-forming polymers were fully characterized by NMR, IR and elemental anal.; they exhibit high molar masses with polydispersity indexes below 2.5. The position of the thiophene in the polymeric backbone has insignificant influence on the spectroscopic properties of the polymers. In contrast, the anthracene-containing polymers reveal position dependent optical properties. A constant bathochromic shift of 50 nm was observed going from P4, where anthracene is surrounded by two double bonds, to P5, where anthracene is at the bridge between a triple bond and a double bond, as well as from P5 to P6 where anthracene is surrounded by two triple bonds. This correlates to the decrease of the observed anthracene band around 255 nm going from P4 through P5 to P6, amounting to the degree of contribution of the anthracene unit to the main chain conjugation. The phenomenon known as CN-PPV effect was observed in the case of P4 [Φf (solution) = 3%, Φf (solid) = 13%]. Electrochem. studies carried out under absolute inert conditions revealed lower electrochem. band gap energies, Egec, than Egopt. © 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 47: 2243-2261, 2009. The experimental process involved the reaction of 1-((2-Ethylhexyl)oxy)-4-methoxybenzene(cas: 146370-51-6).Computed Properties of 146370-51-6

The Article related to thiophene anthracene polyphenylenevinylene polyphenyleneethynylene conjugated polymer photophys electrochem property, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Computed Properties of 146370-51-6

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

On February 29, 2020, Shakirov, I. I.; Boronoev, M. P.; Sinikova, N. A.; Karakhanov, E. A.; Maksimov, A. L. published an article.Electric Literature of 91-16-7 The title of the article was Selective Hydrogenation of Phenylacetylene on a Pd-Containing Catalyst Based on a Polymer Layered Substrate. And the article contained the following:

A Pd-containing catalyst based on a layered substrate obtained by the polymerization of 2,3,6,7,10,11-hexahydroxytriphenylene and terephthalic aldehyde was developed and studied. The process of liquid-phase hydrogenation of phenylacetylene was studied on the obtained catalyst. It was found that high selectivity for styrene (97%) with complete phenylacetylene conversion is achieved at a hydrogen pressure of 0.1 MPa and a temperature of 40°C. It has been shown that the catalyst exhibits high stability-maintaining conversion and selectivity for 6 cycles. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Electric Literature of 91-16-7

The Article related to hexahydroxytriphenylene terephthalic aldehyde copolymer impregnated palladium catalyst phenylacetylene hydrogenation, Chemistry of Synthetic High Polymers: Monomers and Reagents Used In Polymerization and other aspects.Electric Literature of 91-16-7

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

Espeel, Pieter; Celasun, Sensu; Omurtag, Pinar Sinem; Martens, Steven; Du Prez, Filip E. published an article in 2017, the title of the article was Responsive Thiolactone-Derived N-Substituted Poly(Urethane-Amide)s.Safety of 2-(2-(Vinyloxy)ethoxy)ethanol And the article contains the following content:

AB’ type monomers containing a thiolactone unit and vinyl ether moiety have been prepared with high yields. Aminolysis of the thiolactone moiety generates the corresponding thiol in situ, and upon UV-irradiation, radical polyaddition occurs in the same medium, yielding linear poly(amide-urethane)s with different side chain residues and (Poly(Ethylene Oxide)) PEO-like backbone. Moreover, these unique polymers feature lower critical solution temperature behavior in water. Systematic modification of the responsive polymers reveals the influence of the variation of the side chains and the backbone structure on the corresponding solubility properties. In selected cases, multiresponsive polymers have been developed, which also respond to pH and metal concentration The experimental process involved the reaction of 2-(2-(Vinyloxy)ethoxy)ethanol(cas: 929-37-3).Safety of 2-(2-(Vinyloxy)ethoxy)ethanol

The Article related to responsive thiolactone polyurethaneamide, aminolysis, polyaddition, responsive polymers, thiol-ene, thiolactone, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Safety of 2-(2-(Vinyloxy)ethoxy)ethanol

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

On May 31, 2018, Ogruc Ildiz, G.; Konarska, J.; Fausto, R. published an article.SDS of cas: 321-28-8 The title of the article was Structural transformations of 3-fluoro and 3-fluoro-4-methoxy benzaldehydes under cryogenic conditions: A computational and low temperature infrared spectroscopy investigation. And the article contained the following:

Structural transformations of 3-fluorobenzaldehyde (C7H5FO; 3FBA) and 3-fluoro-4-methoxybenzaldehyde (C8H7FO2; 3F4MBA), taking place in different solid phase environments and at low temperature, were investigated by IR spectroscopy, complemented by quantum chem. calculations undertaken at the DFT(B3LYP)/6-311++G(d,p) level of approximation The studied compounds were isolated from gas phase into cryogenic inert matrixes (Ar, Xe), allowing to characterize their equilibrium conformational composition in gas-phase at room temperature In both cases, two conformers differing by the orientation of the aldehyde moiety (with the carbonyl aldehyde bond cis or trans in relation to the aromatic ring fluorine substituent) were found to coexist, with the cis conformer being slightly more populated than the trans form. In situ narrowband UV irradiation of the as-deposited matrixes led either to preferential isomerization of the cis conformer into the trans form or decarbonylation of both conformers, depending on the used excitation wavelength. Deposition of the vapors of 3F4MBA only, onto the cold (15 K) substrate, produced an amorphous solid containing also both the cis and trans conformers of the compound Subsequent heating of the amorphous phase up to 268 K led to crystallization of the compound, which is accompanied by conformational selection, the cis form being the single species present in the crystal. The exptl. observed transformations of the studied compounds, together with the structural and vibrational results obtained from the performed quantum chem. calculations, allowed a detailed structural and vibrational characterization of the individual conformers. The experimental process involved the reaction of 1-Fluoro-2-methoxybenzene(cas: 321-28-8).SDS of cas: 321-28-8

The Article related to fluorobenzaldehyde photodecarbonylation conformational isomerization ir spectra, Physical Organic Chemistry: Rearrangements, Including Isomerization and Tautomerization and other aspects.SDS of cas: 321-28-8

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

On February 27, 2013, Briones, Rodrigo; Serrano, Luis; Sequeiros, Ane; Labidi, Jalel published an article.SDS of cas: 929-37-3 The title of the article was Influence of Microwave Heating on Chemical Properties of Liquefied Lignocellulosic Residues. And the article contained the following:

The chem. composition of liquid products obtained from liquefaction of several agro-industrial wastes was analyzed and the effects of microwave treatments were investigated, evaluating changes in chem. composition, structure, and phys. properties, looking forward to exploring new utilization routes or processing paths for these liquid products. Gas chromatog.-mass spectrometry (GC-MS) showed that the chem. components of liquefied products can be divided into several groups: furans, alcs., and esters and acid derivatives The microwave evaluation showed that irradiation at constant power levels affects the compositions of liquefied products. Fourier transform IR (FT-IR) spectroscopic anal. showed increases in the absorption bands of carbonyl and CH groups, which suggests that microwaves induced more intensive oxidation of hydroxyl groups into carbonyl groups. Elemental anal. indicated higher carbon and lower oxygen contents and higher heat heating value (20 MJ/kg) in treated products with respect to untreated samples. The use of liquefied products as a new energy source has advantages such as their liquid state, convenient energy value, and renewability. The experimental process involved the reaction of 2-(2-(Vinyloxy)ethoxy)ethanol(cas: 929-37-3).SDS of cas: 929-37-3

The Article related to liquefied agricultural waste microwave heating chem composition, Cellulose, Lignin, Paper, and Other Wood Products: Wood and Other Cellulosic Materials and other aspects.SDS of cas: 929-37-3

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

Kazachenko, Aleksandr S.; Miroshnikova, Angelina V.; Tarabanko, Valery E.; Skripnikov, Andrey M.; Malyar, Yuriy N.; Borovkova, Valentina S.; Sychev, Valentin V.; Taran, Oxana P. published an article in 2021, the title of the article was Thermal Conversion of Flax Shives in Sub- and Supercritical Ethanol in the Presence of Ru/C Catalyst.Name: 1,2-Dimethoxybenzene And the article contains the following content:

Thermal conversion of flax shives was studied in sub- and supercritical ethanol medium at 225 and 250°C in the presence of the bifunctional catalyst 3% Ru/C. The use of 3% Ru/C catalyst in the process of thermal conversion of flax shives in supercritical ethanol was found to increase the conversion of the shives by 27% and the yield of liquid products by 10%. The use of 3% Ru/C catalyst in sub- and supercritical ethanol led to the destruction of both lignin and cellulose. The degree of delignification in the non-catalytic thermal conversion increased upon transition from subcritical (225°C) to supercritical (250°C) conditions. Main monomeric products of the thermal conversion process were guaiacylpropene or guaiacylpropane depending on the process temperature In the presence of Ru/C catalyst, the mol. weight distribution was shifted towards an increase in the content of monomeric compounds in the liquid products. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Name: 1,2-Dimethoxybenzene

The Article related to flax shive thermal conversion ruthenium carbon catalyst, Cellulose, Lignin, Paper, and Other Wood Products: Wood and Other Cellulosic Materials and other aspects.Name: 1,2-Dimethoxybenzene

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

On February 8, 2022, Zhang, Jinhong; Sekyere, Daniel T.; Niwamanya, Noah; Huang, Yansheng; Barigye, Andrew; Tian, Yuanyu published an article.COA of Formula: C8H10O2 The title of the article was Study on the Staged and Direct Fast Pyrolysis Behavior of Waste Pine Sawdust Using High Heating Rate TG-FTIR and Py-GC/MS. And the article contained the following:

To understand the fast pyrolysis kinetics and product evolution of waste pine sawdust, high heating rate thermogravimetry-Fourier transform IR (TG-FTIR) was used to obtain the kinetic parameters and the chem. groups formed during the pyrolysis process, while pyrolysis-gas chromatog./mass spectrometry (Py-GC/MS) was used to investigate the detailed compositions of products under the staged (seven stages from 300 to 600°C) and direct fast pyrolysis process. Spectral bands were identified for acids, alcs., aldehydes, aromatics, esters, ethers, hydrocarbons, ketones, phenols, and sugars. Research found that the apparent activation energy for fast pyrolysis is much higher than that of slow pyrolysis. The evolution of CO2 is the major deoxygenation route. Cracking mainly occurred at the 450°C stage with phenols, ketones, aldehydes, and sugars as the main products. The product distributions for different stages are significantly different; the selectivity of aldehydes decreased, while phenols showed an upward trend with an increase in pyrolysis temperature Ketones and sugars reached their peak values at 450°C. The changes in the mol. composition of each stage helped to understand the pyrolysis process. Compared with the staged pyrolysis, the direct pyrolysis process had higher selectivity of acids, aldehydes, esters, and sugars and lower selectivity of phenols, ketones, and alcs. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).COA of Formula: C8H10O2

The Article related to staged pyrolysis behavior waste pine sawdust heating, Cellulose, Lignin, Paper, and Other Wood Products: Wood and Other Cellulosic Materials and other aspects.COA of Formula: C8H10O2

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

On March 30, 2022, Wang, Chao; Li, Juan; Zhang, Ya; He, Zhongrong; Zhang, Yin; Zhang, Xingmin; Guo, Zhuoyue; Huang, Jianan; Liu, Zhonghua published an article.Quality Control of 1,2-Dimethoxybenzene The title of the article was Effects of electrostatic spray drying on sensory qualities, aroma profile and microstructural features of instant Pu-erh tea. And the article contained the following:

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 The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Quality Control of 1,2-Dimethoxybenzene

The Article related to pu erh tea volatile compound electrostatic spray drying, electrostatic spray drying, instant pu-erh tea, microstructural features, odor-active compounds, sensory quality, Food and Feed Chemistry: Physical, Organic, and Inorganic Chemistry and Model Systems and other aspects.Quality Control of 1,2-Dimethoxybenzene

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

Wen, Li-Rong; Shen, Qiang-Yu; Guo, Wei-Si; Li, Ming published an article in 2016, the title of the article was Copper-catalyzed tandem arylation-cyclization of 2-alkynylaryl isothiocyanates with diaryliodonium salts: an efficient synthesis of thiochromeno[2,3-b]indoles.Recommanded Product: 2-((4-Methoxyphenyl)ethynyl)aniline And the article contains the following content:

A catalytic tandem arylation-cyclization approach using 2-alkynylphenyl isothiocyanates with diaryliodonium salts was described. The reaction was performed under mild conditions and thiochromeno[2,3-b]indoles, e.g., I were obtained in moderate to good yields. This tandem protocol involved chemoselective S-arylation, regioselective 5-endo-trig cyclization and Friedel-Crafts-type cyclization processes. Two C-C bonds, one C-S bond, and two heterocyclic rings were formed in a single step. Preliminary mechanistic studies indicated that carbocation mechanism was involved. The experimental process involved the reaction of 2-((4-Methoxyphenyl)ethynyl)aniline(cas: 157869-15-3).Recommanded Product: 2-((4-Methoxyphenyl)ethynyl)aniline

The Article related to thiochromenoindole preparation chemoselective regioselective, alkynylaryl isothiocyanate diaryliodonium salt tandem arylation cyclization copper catalyst, Heterocyclic Compounds (One Hetero Atom): Thiopyrans and Areno- and Diarenothiopyrans and other aspects.Recommanded Product: 2-((4-Methoxyphenyl)ethynyl)aniline

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

On December 1, 2005, Mirkhani, Valiollah; Tangestaninejad, Shahram; Moghadam, Majid; Mohammadpoor-Baltork, Iraj; Kargar, Hadi published an article.Synthetic Route of 53136-21-3 The title of the article was Efficient oxidation of sulfides with sodium periodate catalyzed by manganese(III) Schiff base complexes. And the article contained the following:

Efficient oxidation of sulfides was achieved. In the chem. system containing Mn(III)-salophen complex as catalyst, sulfides were converted efficiently to sulfoxides and sulfones with sodium periodate. The ability of various Schiff base complexes in the oxidation of sulfides was also investigated. The experimental process involved the reaction of Benzyl(4-bromophenyl)sulfane(cas: 53136-21-3).Synthetic Route of 53136-21-3

The Article related to oxidation thioether periodate manganese salophen, sulfoxide preparation periodate manganese salophen, sulfone preparation periodate manganese salophen, Benzene, Its Derivatives, and Condensed Benzenoid Compounds: Sulfoxides and Sulfones and other aspects.Synthetic Route of 53136-21-3

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