Day: October 13, 2022

Wang, Yinghao; Wang, Yongxing; Lu, Yaowei; Cao, Qiue; Fang, Wenhao published an article in 2021. The article was titled 《Efficient hydrogenation of 5-hydroxymethylfurfural using a synergistically bimetallic Ru-Ir/C catalyst》, and you may find the article in Chemical Communications (Cambridge, United Kingdom).Category: tetrahydrofurans The information in the text is summarized as follows:

Activated charcoal-dispersed Ru-Ir alloy nanoparticles (ca. 2.2 nm) are a selective and reusable hydrogenation catalyst for the conversion of 5-hydroxymethylfurfural to valuable liquid biofuel. A 99% yield to 2,5-dimethylfuran is achieved at only 120°C. An acceleration in the reduction of substrate and intermediates is observed due to the synergistic effect between the Ru and Ir species. In the experimental materials used by the author, we found 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Category: tetrahydrofurans)

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.Category: tetrahydrofurans

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

Fathalinejad, Samin; Taarning, Esben; Christensen, Peter; Christensen, Jan H. published an article in Journal of Analytical and Applied Pyrolysis. The title of the article was 《Chemical composition analysis of carbohydrate fragmentation products》.Quality Control of 3-Hydroxydihydrofuran-2(3H)-one The author mentioned the following in the article:

Fragmentation of simple sugars, using fluidized thermal bed cracking, results in a mixture that contains a variety of polar oxygenated compounds, some yet unknown to the industries. This lack of understanding of the product composition, hinders the downstream processes in conversion of sugars to useful chems. The aim of this study was fourfold: to develop a GC-MS identification workflow for carbohydrate fragmentation compounds, to build a library of compounds detected by five GC-MS methods including liquid injection, liquid-liquid extraction, static headspace, solid-phase microextraction and derivatization, to investigate and compare the compound coverage of the five methods, and finally investigate possible reaction pathways for some of the analytes in the mixture The anal. was done on a mixture of seven representative sugar fragmentation samples. The identification workflow was based on mass spectral match factors (>80%), retention indexes and anal. standards A total of 389 compounds were detected, out of which, 46 compounds were fully identified (through confirmatory anal. of anal. standards), 87 were tentatively identified (spectral match factors above 80%), 71 were un-identified with spectral match factors of below 80% and 185 were discarded (contaminants in blanks, etc.). The production pathway for some of the identified compounds in the sugar conversion mixtures were also discussed. In conclusion, solid-phase microextraction detected the highest number of analytes (93), mostly volatile organic compounds and the derivatization GC-MS technique detected the lowest number of analytes (19) but was the only method to detect the largest mols. (C6-C12) in size. This library of CF products can be used as a suspect-screening database for other biomass fragmentation mixtures3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9Quality Control of 3-Hydroxydihydrofuran-2(3H)-one) was used in this study.

3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9) is a 5-membered cyclic ester. It was obtained via tin-conversion of biomass-derived 1,3-dihydroxyacetone (DHA) and formaldehyde. And it may be employed as starting reagent in the synthesis of series of seco-pseudonucleoside synthons via aminolysis.Quality Control of 3-Hydroxydihydrofuran-2(3H)-one

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

Product Details of 19444-84-9On September 18, 2019 ,《Enantioconvergent Alkylations of Amines by Alkyl Electrophiles: Copper-Catalyzed Nucleophilic Substitutions of Racemic α-Halolactams by Indoles》 was published in Journal of the American Chemical Society. The article was written by Bartoszewicz, Agnieszka; Matier, Carson D.; Fu, Gregory C.. The article contains the following contents:

Transition-metal catalysis has the potential to address shortcomings in the classic SN2 reaction of an amine with an alkyl electrophile, both with respect to reactivity and to enantioselectivity. The authors describe the development of a user-friendly method (reaction at room temperature, with com. available catalyst components) for the enantioconvergent nucleophilic substitution of racemic secondary alkyl halides (α-iodolactams) by indoles. Mechanistic studies are consistent with the formation of a copper(I)-indolyl complex that reacts at different rates with the two enantiomers of the electrophile, which interconvert under the reaction conditions (dynamic kinetic resolution). This study complements earlier work on photoinduced enantioconvergent N-alkylation, supporting the premise that this important challenge can be addressed by a range of strategies. The experimental part of the paper was very detailed, including the reaction process 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

In 2019,Bulletin of the Chemical Society of Ethiopia included an article by Gullapelli, Kumaraswamy; Brahmeshwari, G.; Ravichander, M.. HPLC of Formula: 696-59-3. The article was titled 《A facile synthesis of 1-aryl pyrroles by Clauson-Kaas reaction using oxone as a catalyst under microwave irradiation》. The information in the text is summarized as follows:

A new and efficient methodol. to synthesize N-substituted pyrrole derivatives I (R = Ph, 4-chloro-2-nitrophenyl, benzenesulfonyl, etc.) by Clauson-Kaas reaction employing oxone as catalyst was developed. The transformation was performed in acetonitrile under microwave irradiation This procedure has several advantages such as high yield, clean product formation, and short reaction time.2,5-Dimethoxytetrahydrofuran(cas: 696-59-3HPLC of Formula: 696-59-3) 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.HPLC of Formula: 696-59-3

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

Related Products of 696-59-3In 2022 ,《A solvent-free manganese(II) -catalyzed Clauson-Kaas protocol for the synthesis of N-aryl pyrroles under microwave irradiation》 appeared in Journal of Heterocyclic Chemistry. The author of the article were Rohit, Kizhakkekuttu Radhakrishnan; Meera, Gopinadh; Anilkumar, Gopinathan. The article conveys some information:

The first manganese-catalyzed modified Clauson-Kaas reaction for N-substituted pyrroles I (R = Ph, 2-bromo-4-methylphenyl, 1,3-benzothiazol-2-yl, etc.) synthesis using 2,5-dimethoxytetrahydrofuran with variously substituted aromatic amines RNH2 has been developed (up to 89% yield). This interesting neat strategy is free from additives including co-catalysts, ligands, and acids. Relatively low cost, environmentally benign, and handy Mn(NO3)2.4H2O is employed as the catalyst under microwave conditions with a very short reaction time (20 min). The above qualities attest to the green nature of this reaction. In the part of experimental materials, we found many familiar compounds, such as 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Related Products of 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.Related Products of 696-59-3

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

《Anti-quorum sensing and antibiofilm potential of 1,8-cineole derived from Musa paradisiaca against Pseudomonas aeruginosa strain PAO1》 was written by Karuppiah, Vijayakumar; Thirunanasambandham, Ramanathan; Thangaraj, Gunasekaran. Name: 3-Hydroxydihydrofuran-2(3H)-one And the article was included in World Journal of Microbiology & Biotechnology on April 30 ,2021. The article conveys some information:

Abstract: Pseudomonas aeruginosa is one of the vulnerable opportunistic pathogens associated with nosocomial infections, cystic fibrosis, burn wounds and surgical site infections. Several studies have reported that quorum sensing (QS) systems are controlled the P. aeruginosa pathogenicity. Hence, the targeting of QS considered as an alternative approach to control P. aeruginosa infections. This study aimed to evaluate the anti-quorum sensing and antibiofilm inhibitory potential of Musa paradisiaca against Chromobacterium violaceum (ATCC 12472) and Pseudomonas aeruginosa. The methanol extract of M. paradisiacsa exhibits that better antibiofilm potential against P. aeruginosa. Then, the crude methanol extract was subjected to purify by column chromatog. and collected the fractions. The mass-spectrometric anal. of a methanol extract of M. paradisiaca revealed that 1,8-cineole is the major compounds 1, 8-cineole significantly inhibited the QS regulated violacein production in C. violaceum. Moreover, 1,8-cineole significantly inhibited the QS mediated virulence production and biofilm formation of P. aeruginosa without affecting their growth. The real-time PCR anal. showed the downregulation of autoinducer synthase and transcriptional regulator genes upon 1,8-cineole treatment. The findings of the present study strongly suggested that metabolite of M. paradisiaca impedes P. aeruginosa QS system and associated virulence productions. In the part of experimental materials, we found many familiar compounds, such as 3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9Name: 3-Hydroxydihydrofuran-2(3H)-one)

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.Name: 3-Hydroxydihydrofuran-2(3H)-one

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

The author of 《Fluorinated iminophosphonates bearing stereodirecting phenylethyl group in synthesis of biorelevant scalemic aminophosphonates》 were Stanko, Oleg V.; Rassukana, Yuliya V.; Onys’ko, Petro P.. And the article was published in Phosphorus, Sulfur and Silicon and the Related Elements in 2019. Electric Literature of C6H12O3 The author mentioned the following in the article:

Diastereoselective reduction of α-(poly)fluoroalkylated iminophosphonates, bearing stereodirecting phenylethyl group at the nitrogen atom, produces diastereomeric N-(α-phenylethyl) polyfluoroalkylphosphonates. Separation and N-deprotection affords (S) and (R) α-amino polyfluoroalkylphosphonates. The latter react with 2,5-dimethoxytetrahydrofuran to give optically pure polyfluoroalkylphosphonates incorporating 1-pyrrolyl group in α-position. The results came from multiple reactions, including the reaction of 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Electric Literature of C6H12O3)

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.Electric Literature of C6H12O3

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

The author of 《Photochemical synthesis of π-extended ullazine derivatives as new electron donors for efficient conjugated D-A polymers》 were Miao, Dandan; Aumaitre, Cyril; Morin, Jean-Francois. And the article was published in Journal of Materials Chemistry C: Materials for Optical and Electronic Devices in 2019. Quality Control of 2,5-Dimethoxytetrahydrofuran The author mentioned the following in the article:

We report the synthesis of π-extended ullazine derivatives annulated with either electron-poor pyridine or electron-rich thiophene units through a metal-free, photochem. cyclodehydrochlorination (CDHC) reaction. The strongest electron-donor derivative, 7-tetradecylthieno[3′,2′:7,8]indolizino[6,5,4,3-ija]thieno[2,3-c]quinolone, was copolymerized with electron-deficient thienopyrroledione (TPD), isoindigo (IID), and diketopyrrolopyrrole (DPP) derivatives to provide three donor-acceptor conjugated polymers (D-A CPs). Their photophys., electrochem. and photovoltaic (PV) properties were investigated. The polymers showed broad UV-vis-NIR absorption bands with λmax values of 612 nm, 698 nm, 788 nm in chloroform and exhibited optical bandgap (Eoptg) of 1.58 eV, 1.41 eV, 1.24 eV measured as films. Inverted bulk heterojunction polymer solar cells (BHJ-PSCs) were fabricated using these polymers as host and light-harvesting materials. The device based on P3:PC70BM blends shows the best power conversion efficiency (PCE) of 2.23% (Voc = 0.55 V, Jsc = 7.86 mA cm-2, FF = 52%). These promising results demonstrate that π-extended ullazine derivatives can be used as electron-rich building blocks for the construction of D-A CPs for efficient PSCs applications. The results came from multiple reactions, including the reaction of 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Quality Control 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.Quality Control of 2,5-Dimethoxytetrahydrofuran

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

Application In Synthesis of 3-Hydroxydihydrofuran-2(3H)-oneOn May 31, 2022, Polina, I. N.; Mironov, M. V.; Belyy, V. A.; Brovarova, O. V. published an article in Izvestiya Vysshikh Uchebnykh Zavedenii, Khimiya i Khimicheskaya Tekhnologiya. The article was 《Investigation of the component composition of the oxidative thermal degradation products of fuel pellets from the Heracleum sosnowskyi Manden biomass by chromatography-mass-spectrometry》. The article mentions the following:

The component composition of oxidative thermal degradation products of Heracleum sosnowskyi Manden biomass was studied by chromatog.-mass-spectrometry. The hogweed Sosnovskyi biomass was collected on the territory of the village of Vylgort in the Komi Republic, dried to an atm.-dry state, crushed to dm < 0.25 mm and pressed with a force of 10 kN. Fuel pellets were burned in the special device. The products of oxidative thermal degradation were captured and analyzed on a gas-liquid chromatog. with a mass-selective detector. As a result of mass spectrums anal., 39 low-mol.-weight products with a retention time of 6 to 79 min and a percentage content of 0.4 to 12% were identified from 47 captured compounds Qual. and quant. anal. of the component composition of the degradation products showed that their formation is directly related to the component composition of the biomass and is determined by the content of cellulose, hemicellulose and lignin. Anal. of data on retention time of the degradation products showed that cellulose and hemicellulose of the biomass sample are degraded priority, while lignin is thermally more stable due to its aromatic nature. Anal. of data on products of oxidative thermal degradation showed that in mass terms, polysaccharides and lignin are formed as a percentage 45 and 49 resp., while the composition of the products of destruction of polysaccharides is more diverse (23 and 16 names). It is shown that the list of products of oxidative thermal degradation of the Heracleum sosnowskyi Manden biomass is comparable to the products of thermal decomposition of lignocellulosic materials of other botanical origin. The results of the presented study can be used in the calculation of processes and installations for burning fuel pellets from the biomass of the Heracleum sosnowskyi Manden or a combined composition fuel pellets. As well as the results can be used to assess the complex environmental impact of the technol. of the energy use of the biomass of the hogweed Sosnowskyi on the atm. air. After reading the article, we found that the author used 3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9Application In Synthesis of 3-Hydroxydihydrofuran-2(3H)-one)

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.Application In Synthesis of 3-Hydroxydihydrofuran-2(3H)-one

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