Month: November 2022

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 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

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

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 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

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 December 17, 2021, Khan, Jabir; Tyagi, Aparna; Yadav, Naveen; Mahato, Rina; Hazra, Chinmoy K. published an article.Formula: C8H10O2 The title of the article was Lambert Salt-Initiated Development of Friedel-Crafts Reaction on Isatin to Access Distinct Derivatives of Oxindoles. And the article contained the following:

Herein, a mild metal-free and efficacious route for the synthesis of biol. important 3-aryl oxindole derivatives I [R = H, OH, 4-MeOC6H4, etc.; R1 = H, Me, Br, etc.; R2 = H, NO2, Cl; R3 = H, Me, Bn, Ts; Ar = 4-HOC6H4, 2,4,6-tri-MeOC6H2, 1H-indol-3-yl, etc.] was described. Using Lambert salt-initiated hydroarylation of isatin, a diverse array of monoarylated products, sym./unsym. double-arylated products and deoxygenated hydroarylated products could be synthesized from the single starting substrate in good to excellent yields. A preliminary mechanistic study revealed that the reaction proceeded via a monoarylated product followed by a nucleophilic attack by another electron-rich arene nucleophile under mild conditions. The potential of newly synthesized sym./unsym. 3,3-disubstituted oxindole, 3-substituted 3-hydroxy oxindoles, 3,3-di(indolyl)indolin-2-ones, and α-aryl oxindoles as valuable building blocks was further illustrated. The experimental process involved the reaction of 1,2-Dimethoxybenzene(cas: 91-16-7).Formula: C8H10O2

The Article related to aryl oxindole preparation, isatin arene nucleophile hydroarylation lambert salt initiated, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Formula: C8H10O2

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

On December 25, 2016, Zohreh, Nasrin; Hosseini, Seyed Hassan; Pourjavadi, Ali; Soleyman, Rouhollah; Bennett, Craig published an article.HPLC of Formula: 53136-21-3 The title of the article was Immobilized tungstate on magnetic poly(2-ammonium ethyl acrylamide): A high loaded heterogeneous catalyst for selective oxidation of sulfides using H2O2. And the article contained the following:

A heterogeneous tungstate-based catalyst has been prepared for selective oxidation of sulfides to sulfoxides in the presence of 30% H2O2. The catalyst was prepared via immobilization of high amounts of WO2-4 onto the cross-linked poly(ammonium Et acrylamide) coated magnetic nanoparticles (MNP). FT-IR, TEM, TGA, VSM, XRD, EDX, and CHN anal. were used for characterization of catalyst. Variety of sulfides successfully converted to the related sulfoxides using 1 mol% of catalyst at room temperature in high yields. The catalyst was easily recovered and reused up to 6 times without loss of activity. The experimental process involved the reaction of Benzyl(4-bromophenyl)sulfane(cas: 53136-21-3).HPLC of Formula: 53136-21-3

The Article related to magnetic polyaminoethyl acrylamide support tungstate catalyst selective sulfide oxidation, Industrial Organic Chemicals, Leather, Fats, and Waxes: Manufacture Of Industrial Organic Chemicals and other aspects.HPLC of Formula: 53136-21-3

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

Zhang, Jiangjie; Wang, Shangyuan; Wang, Jian-Shu; Ying, Jun; Wu, Xiao-Feng published an article in 2022, the title of the article was Palladium-catalyzed carbonylative synthesis of indole-3-carboxamides from 2-ethynylanilines and nitroarenes.HPLC of Formula: 157869-15-3 And the article contains the following content:

A palladium-catalyzed carbonylative cyclization of 2-ethynylanilines with nitroarenes has been developed for the rapid synthesis of indole-3-carboxamide skeletons. By using nitroarenes as the nitrogen source and Mo(CO)6 as the CO surrogate, the reaction proceeded smoothly to furnish various indole-3-carboxamide derivatives in moderate to high yields. The experimental process involved the reaction of 2-((4-Methoxyphenyl)ethynyl)aniline(cas: 157869-15-3).HPLC of Formula: 157869-15-3

The Article related to indole carboxamide preparation, ethynylaniline nitroarene carbonylative cyclization palladium, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.HPLC of Formula: 157869-15-3

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

Jillella, Raveendra; Oh, Dong hwan; Oh, Chang Ho published an article in 2018, the title of the article was Di-tert-butyl-hydroxyphenyl phenyl-indolyl methyl aromatic aldehyde prepn via Gold-catalyzed tandem reaction of 2-alkynylanilines followed by 1,6-conjugate addition to p-quinone methides..Quality Control of 2-((4-Methoxyphenyl)ethynyl)aniline And the article contains the following content:

A simple, mild, efficient and chemoselective catalytic method for the straightforward synthesis of an interesting class of 2-aryl/alkyl-substituted-3-diaryl indolyl methanes in high yield was reported. This atom-efficient method proceeded via a gold-catalyzed one-pot sequential intramol. hydroamination (C-N bond formation) of 2-alkynylanilines followed by a 1,6-conjugate addition to p-quinonemethides. The p-quinonemethides, which contain aldehyde functional groups, preferentially participate in 1,6-conjugate addition, while the aldehyde functional group remains unreactive. The experimental process involved the reaction of 2-((4-Methoxyphenyl)ethynyl)aniline(cas: 157869-15-3).Quality Control of 2-((4-Methoxyphenyl)ethynyl)aniline

The Article related to diarylindolylmethane preparation, alkynylaniline quinone methide gold catalyst tandem addition, Heterocyclic Compounds (One Hetero Atom): Indoles, Indolizines, Carbazoles, and Other Arenopyrroles and other aspects.Quality Control of 2-((4-Methoxyphenyl)ethynyl)aniline

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