Day: October 13, 2022

In 2022,Xin, Xing; Zhao, Wenyu; Essien, Sinemobong; Dell, Kiri; Baroutian, Saeid published an article in European Food Research and Technology. The title of the article was 《The effects of ageing treatment on bioactive contents and chemical composition of liquid smoke food flavourings》.Synthetic Route of C6H12O3 The author mentioned the following in the article:

Liquid smoke food flavouring is an alternative to traditional food smoking. Ageing treatment of liquid smoke can remove tar to improve a consistent sensory experience but traditionally takes months by storage. This study proposed a thermal treatment approach to accelerate the ageing process. Liquid smoke samples from kanuka and hickory woodchips were prepared by fast pyrolysis. The obtained liquid smoke samples were subjected to ageing by storing them at ambient temperature for 18 mo. Accelerated ageing of liquid smoke was carried out by heat treatment at 80°C for 24 and 48 h. Tar formed during the ageing process, with a yield ranging from 2.2 to 4.1 weight%. Both ageing treatments resulted in decreases in bioactive content and their activities in terms of total phenolic content (TPC), total flavonoid content (TFC), ferric reducing antioxidant power assay (FRAP) and 2,2-diphenyl-1-picrylhydrazyl scavenging activity (DPPH). Chem. composition and principal component analyses indicated that liquid smoke chem. compositions were influenced by wood type and ageing conditions. It was found that thermal treatment at 80°C for 24 h was sufficient to age liquid smoke. In the experiment, the researchers used many compounds, for example, 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Synthetic Route of C6H12O3)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Synthetic Route of C6H12O3

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Kielesinski, Lukasz; Morawski, Olaf W.; Barboza, Cristina A.; Gryko, Daniel T. published an article in 2021. The article was titled 《Polarized Helical Coumarins: [1,5] Sigmatropic Rearrangement and Excited-State Intramolecular Proton Transfer》, and you may find the article in Journal of Organic Chemistry.Quality Control of 2,5-Dimethoxytetrahydrofuran The information in the text is summarized as follows:

The tandem process of phenol addition to a cyclic α,β-unsaturated ester followed by intramol. transesterification and [1,5] sigmatropic rearrangement affords a series of helical coumarins based upon a previously unknown 3-amino-7-hydroxybenzo[3,4]cyclohepta[1,2-c]chromen-6-one core. These novel polarized coumarins, possessing a β-ketoester moiety, have been employed to synthesize more rigid and helical coumarin-pyrazolones, which display green fluorescence. The enhanced emission of coumarin-pyrazolones in polar solvents depends on the nature of the S1 state. The coumarin-pyrazolones are predicted to have two vertical states close in energy: a weakly absorbing S1 (1LE) followed by a bright S2 state (1CT). In polar solvents, the 1CT can be stabilized below the 1LE and may become the fluorescent state. Solvatochromism of the fluorescence spectra confirms this theor. prediction. The presence of an N-H···O=C intramol. hydrogen bond in these coumarin-pyrazolone hybrids facilitates excited-state intramol. proton transfer (ESIPT). This process leads to a barrierless conical intersection with the ground electronic state and opens a radiationless deactivation channel effectively competing with fluorescence. Solvent stabilization of the CT state increases the barrier for ESIPT and decreases the efficiency of the nonradiative channel. This results in the observed correlation between solvatochromism and an increase of fluorescence intensity in polar solvents. In addition to this study using 2,5-Dimethoxytetrahydrofuran, there are many other studies that have used 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Quality Control of 2,5-Dimethoxytetrahydrofuran) was used in this study.

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. Friedel Crafts reaction, for example, adds an alkyl or acyl group to aromatic ethers when they react with an alkyl or acyl halide in the presence of a Lewis acid as a catalyst.Quality Control of 2,5-Dimethoxytetrahydrofuran

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Recommanded Product: 2,5-DimethoxytetrahydrofuranIn 2019 ,《Chemical synthesis, molecular modeling and pharmacophore mapping of new pyrrole derivatives as inhibitors of InhA enzyme and Mycobacterium tuberculosis growth》 appeared in Medicinal Chemistry Research. The author of the article were Joshi, Shrinivas D.; Kumar, S. R. Prem; Patil, Sonali; Vijayakumar, M.; Kulkarni, Venkatarao H.; Nadagouda, Mallikarjuna N.; Badiger, Aravind M.; Lherbet, Christian; Aminabhavi, Tejraj M.. The article conveys some information:

Abstract: Substituted phenylthiazolyl benzamide and pyrrolyl benzamide derivatives were developed using mol. hybridization technique to create novel lead antimycobacterial mols. used to fight against Mycobacteriumtuberculosis. The newly synthesized mols. have inhibited InhA, the enoyl-ACP reductase enzyme from the mycobacterial type II fatty acid biosynthetic pathway. Of these, compound 3b showed H-bonding interactions with Tyr158 and co-factor NAD+ that binds the active site of InhA. All the mols. were screened for in vitro antitubercular activity against M. tuberculosis H37Rv, as well as some representative mols. as the inhibitors of InhA. Thirteen compounds exhibited good anti-TB activities (MIC = 1.6μg/mL), but only few representative mols. showed the moderate InhA enzyme inhibition activity. [Figure not available: see fulltext.]. In addition to this study using 2,5-Dimethoxytetrahydrofuran, there are many other studies that have used 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Recommanded Product: 2,5-Dimethoxytetrahydrofuran) was used in this study.

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Recommanded Product: 2,5-Dimethoxytetrahydrofuran

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Reference of 2,5-DimethoxytetrahydrofuranIn 2019 ,《Solvent Free Synthesis of N-Substituted Pyrroles Catalyzed by Calcium Nitrate》 appeared in Journal of Heterocyclic Chemistry. The author of the article were Wani, Rucha R.; Chaudhari, Hemchandra K.; Takale, Balaram S.. The article conveys some information:

Moderated and mild way for synthesizing N-substituted pyrroles I (R = 4-bromophenyl, naphth-1-yl, 2-chloropyridin-4-yl, etc.) has been demonstrated. No solvents need to be used for this reaction, and instead, reactants themselves acted as a reaction medium. In fact, the reaction is carried out using catalytic amount of Ca(NO3)2.4H2O. The reaction conditions are selective and mild that helped to tolerate a wide variety of functional groups to give the desired products I in good chem. yields. After reading the article, we found that the author used 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Reference of 2,5-Dimethoxytetrahydrofuran)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Reference of 2,5-Dimethoxytetrahydrofuran

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

《Visible light-induced Minisci reaction through photoexcitation of surface Ti-peroxo species》 was published in Catalysis Science & Technology in 2021. These research results belong to Naniwa, Shimpei; Yamamoto, Akira; Yoshida, Hisao. Product Details of 19444-84-9 The article mentions the following:

Photocatalytic Minisci-type functionalization of pyridine with THF (THF) proceeded using hydrogen peroxide (H2O2) and a TiO2 photocatalyst under acidic conditions. Under UV light (λ = 360 nm), the reaction selectivity based on pyridine (Spy) was >99% while the selectivity based on THF (STHF) was low such as 19%. In contrast, under visible light (λ = 400 or 420 nm) Spy was similarly high (>99%) and STHF was two times higher than that under UV light. A surface peroxo complex formed upon contact of hydrogen peroxide with the TiO2 surface can be selectively photoexcited by visible light to inject the photoexcited electron to the conduction band of TiO2. The electron can reduce H2O2 to a reactive oxygen species (ROS) and promote selectively the Minisci-type cross-coupling reaction between pyridinium ions and THF. A reaction test with a hole scavenger (methanol) evidenced that the hole oxidation of H2O2 under UV light was responsible for the lower selectivity, in other words, the higher selectivity under visible light would be due to suppression of the hole oxidation of H2O2. These results demonstrate a novel way to improve the selectivity of the photocatalytic cross-coupling reaction by using H2O2 as an oxidant with the photoexcitation of surface Ti-peroxo species on TiO2. The experimental process involved the reaction of 3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9Product Details of 19444-84-9)

3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9) may be employed as starting reagent in the synthesis of series of seco-pseudonucleoside synthons via aminolysis. It may be employed as starting reagent in the synthesis of enantiomerically pure orthogonally protected δ-azaproline, via Mitsunobu reaction.Product Details of 19444-84-9

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Computed Properties of C4H6O3On October 31, 2020 ,《Stability of powdered infant formula during secondary shelf-life and domestic practices》 was published in International Dairy Journal. The article was written by Condurso, Concetta; Cincotta, Fabrizio; Merlino, Maria; Stanton, Catherine; Verzera, Antonella. The article contains the following contents:

Powd. infant formula (PIF) and lactose-free PIF during secondary shelf-life (SSL) and under domestic practices was investigated to verify their stability up to the expiration date and under the label instructions for milk reconstitution. Particular attention was given to variations in Maillard reaction and lipid peroxidation products identified and quantified by HS-SPME-GC-MS. Two types of PIF: Type A based on bovine milk and Type B a lactose-free product based on glucose syrup were analyzed. The PIF were analyzed at regular time intervals beyond the labeled expiration date after opening, and reconstituted using water at 70°C, 80°C and 90°C. A large number of volatile compounds were identified and significant statistically differences resulted during SSL and water temperature used for reconstitution that were correlated to the PIF composition The study showed that water temperature for reconstitution of samples and the SSL has to be adapted to PIF composition3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9Computed Properties of C4H6O3) was used in this study.

3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9) may be employed as starting reagent in the synthesis of series of seco-pseudonucleoside synthons via aminolysis. It may be employed as starting reagent in the synthesis of enantiomerically pure orthogonally protected δ-azaproline, via Mitsunobu reaction.Computed Properties of C4H6O3

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

《KI-Mediated One-Pot Transition-Metal-Free Synthesis of 4-Phenylpyrrolo[1,2-a]quinoxalines》 was written by Li, Shichen; Xie, Caixia; Chu, Xianglong; Dai, Zhen; Feng, Lei; Ma, Chen. Related Products of 696-59-3 And the article was included in European Journal of Organic Chemistry in 2020. The article conveys some information:

An efficient and eco-friendly method for the synthesis of pyrrolo[1,2-a]quinoxalines is presented. Compared to previous methods, this protocol is transition-metal-free and only potassium iodide is required. A series of substituted 4-phenylpyrrolo[1,2-a]quinoxalines were obtained in moderate to good yields. The results came from multiple reactions, including the reaction of 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Related Products of 696-59-3)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Related Products of 696-59-3

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Li, Chao; Zhang, Chenting; Zhang, Lijun; Gholizadeh, Mortaza; Hu, Xun published their research in International Journal of Energy Research in 2021. The article was titled 《Biochar catalyzing polymerization of the volatiles from pyrolysis of poplar wood》.Reference of 2,5-Dimethoxytetrahydrofuran The article contains the following contents:

In this study, the pyrolysis of poplar wood chips with biochar catalyst produced from gasification of the same poplar wood chips was conducted, aiming to probe its influence on the evolution of the pyrolysis products. From the results, it was concluded that the biochar catalyst enhanced the polymerization of the volatiles produced from the pyrolysis, and thus reduced the yields of the gaseous compounds while increased the yield of char. The carbonaceous deposit on surface of the char was oxygen-rich and more aliphatic, which decreased the thermal stability and crystallinity of the char, while made the char prone to oxidation The biochar catalyst also promoted the formation of methoxy phenols at the expense of alkyl phenols, and the formation of the phenolics with bigger π-conjugated structures. In addition, the volatile-biochar interaction removed the defective structures in the large aromatic structures in the biochar catalyst. Highlights : Biochar catalyzed polymerization, but not cracking, of volatiles in pyrolysis. Biochar catalyst enhances char formation while reduces gas formation in pyrolysis. Char in catalytic pyrolysis is more O-rich and aliphatic and low thermal stability. Biochar catalyzed condensation of volatiles to form bigger fused ring structures. Biochar-volatiles interaction removes defective structure in fused ring of biochar. The experimental part of the paper was very detailed, including the reaction process of 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Reference of 2,5-Dimethoxytetrahydrofuran)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. Friedel Crafts reaction, for example, adds an alkyl or acyl group to aromatic ethers when they react with an alkyl or acyl halide in the presence of a Lewis acid as a catalyst.Reference of 2,5-Dimethoxytetrahydrofuran

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Wu, Zhuo; Wei, Feng; Wan, Bin; Zhang, Yanghui published an article in 2021. The article was titled 《Pd-Catalyzed ipso,meta-Dimethylation of ortho-Substituted Iodoarenes via a Base-Controlled C-H Activation Cascade with Dimethyl Carbonate as the Methyl Source》, and you may find the article in Journal of the American Chemical Society.Application In Synthesis of 2,5-Dimethoxytetrahydrofuran The information in the text is summarized as follows:

A Me group can have a profound impact on the pharmacol. properties of organic mols. Hence, developing methylation methods and methylating reagents is essential in medicinal chem. We report a palladium-catalyzed dimethylation reaction of ortho-substituted iodoarenes using di-Me carbonate as a Me source. In the presence of K2CO3 as a base, iodoarenes are dimethylated at the ipso- and meta-positions of the iodo group, which represents a novel strategy for meta-C-H methylation. With KOAc as the base, subsequent oxidative C(sp3)-H/C(sp3)-H coupling occurs; in this case, the overall transformation achieves triple C-H activation to form three new C-C bonds. These reactions allow expedient access to 2,6-dimethylated phenols, 2,3-dihydrobenzofurans, and indanes, which are ubiquitous structural motifs and essential synthetic intermediates of biol. and pharmacol. active compounds In addition to this study using 2,5-Dimethoxytetrahydrofuran, there are many other studies that have used 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Application In Synthesis of 2,5-Dimethoxytetrahydrofuran) was used in this study.

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. Friedel Crafts reaction, for example, adds an alkyl or acyl group to aromatic ethers when they react with an alkyl or acyl halide in the presence of a Lewis acid as a catalyst.Application In Synthesis of 2,5-Dimethoxytetrahydrofuran

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

In 2022,Wu, Long; Ma, Huameng; Mei, Jingsheng; Li, Yanhua; Xu, Qing; Li, Zhanyong published an article in International Journal of Hydrogen Energy. The title of the article was 《Low energy consumption and high quality bio-fuels production via in-situ fast pyrolysis of reed straw by adding metallic particles in an induction heating reactor》.SDS of cas: 696-59-3 The author mentioned the following in the article:

An in-situ fast pyrolysis of biomass by adding metallic particles in an induction heating reactor was proposed to produce high quality bio-fuels. After adding metallic particles into biomass, the times required to reach complete pyrolysis during reed straw pyrolysis process were significantly reduced up to 28.9%. The yields of combustible gas and bio-oil products were significantly increased. Furthermore, higher-quality combustible gas and bio-oil products were obtained with the LHV of gas products and HHV of bio-oil (dry basis) increased by 14.2%-19.1% and 4.16%-16.35%, resp., under 400-600°C. The lower oxygen content and higher yields of aromatics, alkenes and alkanes contents in bio-oil were obtained after metallic particles addition More importantly, up to 26.5% of the total energy consumption during pyrolysis process was reduced after adding metallic particles into biomass in an induction heating reactor. The results indicate that adding metallic particles into biomass in an induction heating reactor can significantly enhance the heat transfer, decomposition reaction intensity and energy utilization efficiency of biomass pyrolysis process with lower energy consumption and higher-quality bio-fuel production In the experiment, the researchers used 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3SDS of cas: 696-59-3)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. Friedel Crafts reaction, for example, adds an alkyl or acyl group to aromatic ethers when they react with an alkyl or acyl halide in the presence of a Lewis acid as a catalyst.SDS of cas: 696-59-3

Referemce:
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem