Salnikova, Ksenia E’s team published research in ChemPlusChem in 2020-08-31 | 97-99-4

ChemPlusChem published new progress about Adsorption. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application of C5H10O2.

Salnikova, Ksenia E.; Larichev, Yurii V.; Sulman, Esther M.; Bykov, Alexey V.; Sidorov, Alexander I.; Demidenko, Galina N.; Sulman, Mikhail G.; Bronstein, Lyudmila M.; Matveeva, Valentina G. published the artcile< Selective Hydrogenation of Biomass-Derived Furfural: Enhanced Catalytic Performance of Pd-Cu Alloy Nanoparticles in Porous Polymer>, Application of C5H10O2, the main research area is biomass derived furfural hydrogenation palladium copper nanoparticle polymer catalyst; Pd−Cu alloys; furfural; hydrogenation; hypercrosslinked polystyrene; nanostructures.

Here, the development of a new catalyst is reported for the selective furfural (FF) hydrogenation to furfuryl alc. (FA) based on about 7 nm sized Pd-Cu alloy nanoparticles (NPs) formed in inexpensive, com. available micro/mesoporous hypercrosslinked polystyrene (HPS). A comparison of the catalytic properties of as-synthesized and reduced (denoted “”r””) catalysts as well as Pd-Cu alloy and monometallic palladium NPs showed a considerable enhancement of the catalytic performance of Pd-Cu/HPS-r compared to other catalysts studied, resulting in about 100% FF conversion, 95.2% selectivity for FA and a TOF of 1209 h-1. This was attributed to the enrichment of the NP surface with copper atoms, disrupting the furan ring adsorption, and to the presence of both zerovalent and cationic palladium and copper species, resulting in optimal hydrogen and FF adsorption. These factors along with exceptional stability of the catalyst in ten consecutive catalytic cycles make it highly promising in practical applications.

ChemPlusChem published new progress about Adsorption. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application of C5H10O2.

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

Xu, Jiamin’s team published research in ACS Omega in 2020-11-24 | 97-99-4

ACS Omega published new progress about Adsorption. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Reference of 97-99-4.

Xu, Jiamin; Cui, Qianqian; Xue, Teng; Guan, Yejun; Wu, Peng published the artcile< Total Hydrogenation of Furfural under Mild Conditions over a Durable Ni/TiO2-SiO2 Catalyst with Amorphous TiO2 Species>, Reference of 97-99-4, the main research area is total hydrogenation furfural mild condition durable nickel titania silica.

One-step total hydrogenation of furfural (FAL) toward tetrahydrofurfuryl alc. in continuous flow using cheap transition metals still remains a great challenge. We herein reported the total hydrogenation of FAL over Ni (~5 nm) nanoparticles loaded on TiO2-SiO2 composites with long-term stability. The TiO2-SiO2 composites comprise amorphous TiOx which was grafted on the silica aerogel by acetyl acetone-aided controlled hydrolysis of tetra-Bu titanate. The catalysts were characterized by several techniques including Brunauer-Emmett-Teller, X-ray diffraction, transmission electron microscopy, H2-temperature-programmed reduction, and H2-temperature-programmed desorption. The hydrogenation performances were systematically explored in terms of TiO2 content, Ni loading, liquid hour space velocity, and so forth. Ni nanoparticles in contact with amorphous TiOx showed strengthened interaction with the C=O bond of FAL as well as enhanced hydrogen dissociation and desorption ability, hence benefiting the overall hydrogenation process.

ACS Omega published new progress about Adsorption. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Reference of 97-99-4.

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

Brown, David W’s team published research in Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry in 1995-12-21 | 5455-94-7

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry published new progress about Heterocyclization. 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Formula: C8H14O2.

Brown, David W.; Mahon, Mary F.; Ninan, Aleyamma; Sainsbury, Malcolm published the artcile< Synthesis and oxidative behavior of reduced indeno[1,2-b]quinoxalines and benzo[b]phenazines>, Formula: C8H14O2, the main research area is quinoxaline tetracyclic preparation oxidation.

New routes to tetracyclic quinoxalines have been explored and their oxidative behavior has been examined Only if such compounds are devoid of benzylic hydrogen atoms are the corresponding cation radicals stable. Attempts to prepare certain polymethylated quinoxalines failed because of steric problems, and evidence is presented to show that in the case of some monohydrochloride salts proton migration between two nitrogen atoms is discernable through 1H NMR spectroscopy.

Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry published new progress about Heterocyclization. 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Formula: C8H14O2.

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

Li, Xinsheng’s team published research in Catalysis Letters in 2021-09-30 | 97-99-4

Catalysis Letters published new progress about Acidity. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Recommanded Product: (Tetrahydrofuran-2-yl)methanol.

Li, Xinsheng; Pang, Jifeng; Luo, Wenhao; Zhao, Yu; Pan, Xiaoli; Zheng, Mingyuan published the artcile< Catalytic Conversion of Tetrahydrofurfuryl Alcohol over Stable Pt/MoS2 Catalysts>, Recommanded Product: (Tetrahydrofuran-2-yl)methanol, the main research area is platinum molybdenum disulfide catalyst tetrahydrofurfuryl alc hydrogenation.

MoS2 supported noble metal catalysts were used for the catalytic conversion of terahydrofurfuryl alc. (THFA) to 1,5-pentanediol (1,5-PDO) and its derivate tetrahydropyrane (THP). Over the optimal 4%Pt/MoS2-FR catalyst, 75.8% overall selectivity (35.4% to 1,5-PDO and 40.4% to THP) and 63.7% conversion of 5 wt% THFA solution were obtained after 8 h reaction at 250°C. The catalyst showed stable catalytic performance in five-cycle reactions, demonstrating the robustness of Pt/MoS2 under the harsh hydrothermal and hydrogenation conditions. A variety of characterizations, including CO-DRIFTS, HRTEM, H2-TPR, Raman spectroscopy and XPS revealed that typical behavior of strong metal-support interaction (SMSI) existed between Pt and MoS2, largely caused by the coverage of MoS2 over Pt and rarely reported previously. The Pt/MoS2 had intact structure under the harsh conditions thanks to the SMSI and chem. stability of MoS2. The acidity of Pt/MoS2 was negligible, and the active sites for the reaction were attributed to Pt and the Mo sites interacting closely on the catalysts. The reaction pathway was proposed according to the product distributions and the results of conditional experiments

Catalysis Letters published new progress about Acidity. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Recommanded Product: (Tetrahydrofuran-2-yl)methanol.

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

Shao, Yuewen’s team published research in Renewable Energy in 2021-06-30 | 97-99-4

Renewable Energy published new progress about Crystallinity. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Category: tetrahydrofurans.

Shao, Yuewen; Wang, Junzhe; Sun, Kai; Gao, Guoming; Li, Chao; Zhang, Lijun; Zhang, Shu; Xu, Leilei; Hu, Guangzhi; Hu, Xun published the artcile< Selective hydrogenation of furfural and its derivative over bimetallic NiFe-based catalysts: Understanding the synergy between Ni sites and Ni-Fe alloy>, Category: tetrahydrofurans, the main research area is furfural hydrogenation nickel iron catalyst synergistic effect.

Pentanediols (1,2-pentanediol and 1,5-pentanediol) are important feedstock for synthesis of fine chems., production of which from the biomass-derived furfural or furfuryl alc. (FA) has been considered as a sustainable route and attracted much interest. In this study, the catalysts with Ni-Fe as the metal sites and Mg-Al layered double hydroxides (LDH) as precursor of support were synthesized. The results showed that the presence of Fe in catalyst affected both the development of the pores of the catalyst and the catalytic behaviors of nickel species. A low Fe content facilitated formation of mesoporous structure, but the higher content destroyed the LDH structure, resulting in a decreased surface area. Fe could also react with metallic Ni to form NiFe alloy. This decreased the catalytic activity for the further hydrogenation of the furan ring in FA, and FA would thus have the chance to produce pentanediols via hydrogenolysis. The in-situ diffuse reflectance IR Fourier transform spectroscopy characterization of hydrogenation of FA indicated that the alloying between Fe and Ni resulted in a weak adsorption of C=C group in furan ring and moderate adsorption of C-O-C group, which suppressed the complete hydrogenation of FA while facilitated the ring-opening of FA to form the pentanediols.

Renewable Energy published new progress about Crystallinity. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Category: tetrahydrofurans.

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

Shibutani, Shotaro’s team published research in Journal of the American Chemical Society in 2020-01-22 | 97-99-4

Journal of the American Chemical Society published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Electric Literature of 97-99-4.

Shibutani, Shotaro; Kodo, Taiga; Takeda, Mitsutaka; Nagao, Kazunori; Tokunaga, Norihito; Sasaki, Yusuke; Ohmiya, Hirohisa published the artcile< Organophotoredox-Catalyzed Decarboxylative C(sp3)-O Bond Formation>, Electric Literature of 97-99-4, the main research area is ether secondary amine thioether preparation; alc amine thiol dioxoisoindolinyl carboxylate photoredox decarboxylative coupling.

This manuscript reports a visible-light-mediated organosulfide catalysis that enables the decarboxylative coupling between simple aliphatic alc. and tertiary or secondary alkyl carboxylic acid-derived redox active esters to produce a C(sp3)-O-C(sp3) fragment. Results of the coupling using other heteroatom nucleophiles such as water, amides, and thiols are also described.

Journal of the American Chemical Society published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Electric Literature of 97-99-4.

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

Hagens, Graham’s team published research in Journal of Organic Chemistry in 1970 | 5455-94-7

Journal of Organic Chemistry published new progress about Photolysis. 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, SDS of cas: 5455-94-7.

Hagens, Graham; Wasacz, John P.; Joullie, Madeleine; Yates, Peter published the artcile< Photolysis of 2,2,5,5-tetramethyldihydro-3-furanone>, SDS of cas: 5455-94-7, the main research area is furanones photolysis; photolysis furanones.

The photolysis of 2,2,5,5-tetramethyldihydro-3(2H)-furanone in MeOH gives Me 3-isopropoxy-3-methylbutanoate, Me 3-methyl-2-butenoate, iso-Pr 3-methyl-2-butenoate, Me 3-methyl-3-butenoate, and iso-PrOH. These products are all considered to arise via the ketene formed by Norrish type I cleavage of the dihydrofuranone followed by intramol. H abstraction. Corroboration for this view is that photolysis of 2,2,5,5-tetramethyldihydro-3(2H)-furanone-4-d2 in MeOH gives Me 3-(isopropoxy-2-d)-3-methylbutanoate and Me 3-methyl-2-butenoate-2-d.

Journal of Organic Chemistry published new progress about Photolysis. 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, SDS of cas: 5455-94-7.

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

Wanderley, Ricardo R’s team published research in Separation and Purification Technology in 2020-01-16 | 97-99-4

Separation and Purification Technology published new progress about Absorption. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, COA of Formula: C5H10O2.

Wanderley, Ricardo R.; Pinto, Diego D. D.; Knuutila, Hanna K. published the artcile< Investigating opportunities for water-lean solvents in CO2 capture: VLE and heat of absorption in water-lean solvents containing MEA>, COA of Formula: C5H10O2, the main research area is flue gas carbon dioxide absorption water lean solvent; amine wet scrubbing carbon dioxide absorption; vapor liquid equilibrium water lean solvent carbon dioxide absorption; high volatility solvent carbon dioxide absorption; low volatility solvent carbon dioxide absorption.

A thorough study of a set of organic diluents for water-lean solvent formulation was conducted. Performance of 30 weight percent/weight aqueous monoethanolamine (MEA) 30 was compared to that of mixtures of 30 weight percent/weight MEA and methanol, acetone, monoethylene glycol (MEG), N-methyl-2-pyrrolidone (NMP), tetrahydrofurfuryl alc. (THFA), sulfolane, cyclopentanone (CC5), furfuryl alc., and γ-butyrolactone. A small calorimeter was used to obtain vapor-liquid equilibrium (VLE) and heat of absorption data. Shifting from aqueous to non-aqueous solvents had significant implications for VLE, since all water-lean solvents had lower CO2 solubility than aqueous MEA; however, heat of absorption was not much affected. Results showed the limitations of using most ethers, esters, and ketones for water-lean solvent formulation, all stemming from the very low dielec. permittivity of these diluents and the difficulty of stabilizing intermediate reaction species between MEA and CO2 within these systems. Nevertheless, the low volatility of solvents containing MEG, NMP, or THFA could offer opportunities for processes with overall less reboiler heat duties than that of ordinary aqueous MEA.

Separation and Purification Technology published new progress about Absorption. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, COA of Formula: C5H10O2.

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

Wu, Jingcheng’s team published research in Energy & Fuels in 2020-02-20 | 97-99-4

Energy & Fuels published new progress about Hydrogenation catalysts. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Product Details of C5H10O2.

Wu, Jingcheng; Zhang, Xinghua; Chen, Qiang; Chen, Lungang; Liu, Qiying; Wang, Chenguang; Ma, Longlong published the artcile< One-Pot Hydrogenation of Furfural into Tetrahydrofurfuryl Alcohol under Ambient Conditions over PtNi Alloy Catalyst>, Product Details of C5H10O2, the main research area is furfural one pot hydrogenation tetrahydrofurfuryl alc platinum nickel alloy.

Furfural (FAL), a promising renewable platform compound from biomass, can be totally hydrogenated to an industrially important platform chem., tetrahydrofurfuryl alc. (THFA). In this work, a high yield of THFA was obtained by one-pot hydrogenation of FAL over a PtNi catalyst under mild reaction conditions. Small PtNi alloy particles were well distributed on active carbon. The catalysts were characterized by several phys.-chem. technologies (transmission electron microscopy, X-ray diffraction, energy-dispersive spectroscopy, and inductively coupled plasma spectroscopy). Temperature-programmed reduction with hydrogen and in situ XPS demonstrate the presence of PtNi alloy. The electron-rich metal Pt could facilitate the heterolytic dissociation of hydrogen and promote the hydrogenation of FAL. Pt sites on the surface facilitate the adsorption at aldehyde (C=O) groups, and the furan ring strongly adsorbs on the Ni surface. Low reaction temperature is advantageous to reduce side reactions. Various metal concentrations were employed in this reaction; Pt(3)Ni(3)/C catalyst exhibits the best performance, achieving 99% FAL conversion and 93% THFA yield at 35°C and under 2 MPa H2.

Energy & Fuels published new progress about Hydrogenation catalysts. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Product Details of C5H10O2.

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

Peijnenburg, W J G M’s team published research in Tetrahedron in 1988 | 5455-94-7

Tetrahedron published new progress about Photorearrangement. 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Name: 2,2,5,5-Tetramethyldihydrofuran-3(2H)-one.

Peijnenburg, W. J. G. M.; Buck, H. M. published the artcile< The effects of substituents and solvent polarity on photochemical [1,3] sigmatropic shifts. Experimental evidence in favor of the occurrence of sudden polarization in acyclic alkenes>, Name: 2,2,5,5-Tetramethyldihydrofuran-3(2H)-one, the main research area is photorearrangement ethylidenenaphthalenol mechanism.

On direct irradiation of I in various solvents, fast E-Z isomerization around the exocyclic double bond was observed This led to the formation of a 50:50 mixture of E/Z isomers. Further irradiation of this mixture resulted in the clean formation of II, the product derived from a photochem. [1,3]-OH shift in I or its geometric isomer. The yield of II decreases going from a highly apolar solvent to the most polar solvent, n-hexane-autonitrile. This result is a clear support in favor of the sudden polarization mode 1.

Tetrahedron published new progress about Photorearrangement. 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Name: 2,2,5,5-Tetramethyldihydrofuran-3(2H)-one.

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