Month: April 2021

5061-21-2, Name is 2-Bromo-4-butanolide, molecular formula is C4H5BrO2, belongs to Tetrahydrofurans compound, is a common compound. In a patnet, author is Althikrallah, Hanan, once mentioned the new application about 5061-21-2, Category: Tetrahydrofurans.

Turnover Rate of Metal-Catalyzed Hydroconversion of 2,5-Dimethylfuran: Gas-Phase Versus Liquid-Phase

Hydroconversion (hydrogenation and hydrogenolysis) of biomass-derived furanic compounds giving furan ring-hydrogenation and ring-cleavage products attracts interest for sustainable production of chemicals and fuels. Here, the hydroconversion of 2,5-dimethylfuran (DMF), chosen as a model furanic compound, was investigated at a gas-solid interface over carbon-supported Pt, Pd, Rh and Ru metal catalysts in a fixed-bed reactor at 70-90 degrees C and ambient pressure. Pt/C was mainly active in ring cleavage of DMF to produce 2-hexanone as the primary product, followed by its hydrogenation to 2-hexanol and hexane. In contrast, Pd/C, Rh/C and Ru/C selectively hydrogenated the furan ring to 2,5-dimethyltetrahydrofuran (DMTHF). The turnover frequency (TOF) of metal sites in the gas-phase DMF hydroconversion was determined from zero-order kinetics in the absence of diffusion limitations. The TOF values decreased in the sequence Pt > Rh > Pd >> Ru, similar to the liquid-phase reaction. The TOF values for the gas-phase reaction were found to be one order of magnitude greater than those for the liquid-phase reaction. This indicates that the gas-phase process is potentially more efficient than the liquid-phase process. TOF values for hydroconversion of ring-saturated furan derivatives, tetrahydrofuran and DMTHF, on Pt/C, were much lower than those for DMF.

If you¡¯re interested in learning more about 5061-21-2. The above is the message from the blog manager. Category: Tetrahydrofurans.

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

Reference of 7331-52-4, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 7331-52-4, Name is (S)-4-Hydroxydihydrofuran-2(3H)-one, SMILES is O=C1OC[C@@H](O)C1, belongs to Tetrahydrofurans compound. In a article, author is Swar, Sumita, introduce new discover of the category.

The Covalent Tethering of Poly(ethylene glycol) to Nylon 6 Surface via N,N ‘-Disuccinimidyl Carbonate Conjugation: A New Approach in the Fight against Pathogenic Bacteria

Different forms of unmodified and modified Poly(ethylene glycols) (PEGs) are widely used as antifouling and antibacterial agents for biomedical industries and Nylon 6 is one of the polymers used for biomedical textiles. Our recent study focused on an efficient approach to PEG immobilization on a reduced Nylon 6 surface via N,N ‘-disuccinimidyl carbonate (DSC) conjugation. The conversion of amide functional groups to secondary amines on the Nylon 6 polymer surface was achieved by the reducing agent borane-tetrahydrofuran (BH3-THF) complex, before binding the PEG. Various techniques, including water contact angle and free surface energy measurements, atomic force microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy, and Fourier-transform infrared spectroscopy, were used to confirm the desired surface immobilization. Our findings indicated that PEG may be efficiently tethered to the Nylon 6 surface via DSC, having an enormous future potential for antifouling biomedical materials. The bacterial adhesion performances against S. aureus and P. aeruginosa were examined. In vitro cytocompatibility was successfully tested on pure, reduced, and PEG immobilized samples.

Reference of 7331-52-4, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 7331-52-4 is helpful to your research.

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

Related Products of 96-82-2, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 96-82-2, Name is Lactobionic acid, SMILES is O[C@H]([C@H]([C@@H]([C@@H](CO)O)O[C@H]1[C@@H]([C@H]([C@H]([C@@H](CO)O1)O)O)O)O)C(O)=O, belongs to tetrahydrofurans compound. In a article, author is Liu, Wei, introduce new discover of the category.

Derived high reducing sugar and lignin colloid particles from corn stover

Lignocellulosic biomass is considered as the largest potential candidate to develop alternative energy, such as biofuel, biomaterial. However, the efficient conversion of cellulose and practical utilization of lignin are great challenges for sustainable biorefinery. In this study, high reducing sugar yield and different size of lignin colloid particles (LCPs) were obtained via tetrahydrofuran-water (THF-H2O) pretreatment of corn stover (CS). THF-H2O as a co-solvent, could efficiently dissolve lignin and retain cellulose. After the pretreatment, 640.87 mg/g of reducing sugar was produced, that was 6.66-fold higher than that of the untreated CS. Meanwhile, the pretreatment liquor could form spherical LCPs with different sizes ranged from 202 to 732 nm through self-assembly. We studied the optimal pretreatment condition to simultaneously realize the high reducing sugar yield (588.4 mg/g) and excellent LCPs preparation with average size of 243 nm was under TH22 (THF-H2O pretreatment at 120 degrees C for 2 h). To further explore the formation of LCPs with different sizes. We studied the lignin structure changes of various conditions, concluded the size of LCPs was related to the lignin concentration and syringyl/guaiacyl (S/G) ratio. As the increase of the lignin concentration and S/G, the sizes of LCPs were increased. G-type lignin was easier to dissolve in the mild pretreatment supernatant, contributing to form smaller LCPs with a good dispersibility. In the severe condition, both of S and G-type lignin were dissolved due to the lignin depolymerization, formed the larger sphere particles. This work provides a novel perspective for the technical design of lignocellulosic biomass conversion.

Related Products of 96-82-2, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 96-82-2.

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

Synthetic Route of 3188-00-9, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 3188-00-9, Name is 2-Methyltetrahydrofuran-3-one, SMILES is CC1C(CCO1)=O, belongs to tetrahydrofurans compound. In a article, author is Wang, Jing, introduce new discover of the category.

Highly sensitive pyrene-dansyl conjugate-based fluorescent sensor for discriminative detection of water in organic solvents

In this work, we designed a dual-fluorophore-based water sensor 5-(dimethylamino)- N’-(pyren-1-ylmethylene)naphthalene-1-sulfonohydrazide (PDH) by combining pyrene, which exhibits monomer/excimer switching emission, and dansyl, which shows typical intramolecular charge transfer (ICT) activity. The effects of solvents on PDH and two control compounds were studied. Results showed that PDH exhibited tunable fluorescence properties, and the two fluorescent units of PDH could behave independently and synergistically. Generally, the fluorescent emission of PDH displayed two distinct modes in various solvents. On the one hand, only pyrene emission was observed in N, N-dimethylformamide (DMF), acetonitrile (AN), ethanol (EtOH), dimethyl sulfoxide (DMSO), methanol (MeOH), acetone, and tetrahydrofuran (THF) because these solvents affected the push-pull interactions between dimethyamino moiety and naphthalenesulfonyl and the aggregation behavior. On the other hand, efficient Forster resonance energy transfer (FRET) from the pyrene unit to the dansyl moiety was observed in dichloromethane (CH2Cl2), chloroform (CHCl3), ethyl acetate (EA), toluene, and water (H2O). The fluorescence spectra displayed strong dansyl emission and weak pyrene monomer emission due to the synergy of ICT and FRET. By taking advantage of the monomer/excimer switching, ICT, and FRET activities, the fluorescence tunability of PDH was applied for the differentiation of solvents and discriminative detection of H2O content in three organic solvents, including acetone, DMF, and DMSO.

Synthetic Route of 3188-00-9, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 3188-00-9.

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

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 104-61-0, Name is 5-Pentyldihydrofuran-2(3H)-one, molecular formula is C9H16O2, belongs to tetrahydrofurans compound. In a document, author is Benassi, Enrico, introduce the new discover, Name: 5-Pentyldihydrofuran-2(3H)-one.

Determination of the molecular size from measurements of vapour pressure of binary liquid mixtures. Theory, experiments and quantum chemical calculations

In the present work we focus on some fundamental organic solvents. The total and partial vapour pressure of 30 binary systems made of hexane, cyclohexane, and benzene with 10 organic molecules, namely chloroform (Chl), chlorobenzene (Cl-Ben), tetrahydrofuran (THF), dichloromethane (DCM), acetone (Ac), ethanol (Et0H), N, N-dimethylformamide own, methanol (MeOH), acetonitrile (MeCN) and dimethylsulphoxide (DMSO), were measured using the method developed by Sameshima. A simple electrostatic model was derived to express the change of the Helmholtz free energy as a function of dielectric properties of the binary mixtures, as well as the dielectric constant, dipole moment, dipole polarizability, and radius of a spherical cavity hosting the aforementioned 10 organic molecules. Through measurements of the partial vapour pressure of these 10 organic liquids, the size of the cavity was extracted, which approximates their molecular size. The molecular size obtained from the experiments exhibits a good agreement with the results as obtained from the cavity size calculated using the Polarizable Continuum Model (PCM). The partial vapour pressure of some compounds such as Ac, DMF, DMSO, and MeCN presented severe deviation from the Raoult law. The intermolecular interaction among the molecules of each compound was believed to take responsibility for their exceptional behaviours in vapour pressure. (C) 2020 Elsevier B.V. All rights reserved.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 104-61-0. Name: 5-Pentyldihydrofuran-2(3H)-one.

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

Application of 96-82-2, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 96-82-2, Name is Lactobionic acid, SMILES is O[C@H]([C@H]([C@@H]([C@@H](CO)O)O[C@H]1[C@@H]([C@H]([C@H]([C@@H](CO)O1)O)O)O)O)C(O)=O, belongs to tetrahydrofurans compound. In a article, author is Yammine, Elham, introduce new discover of the category.

Towards Polymeric Nanoparticles with Multiple Magnetic Patches

Fabricating future materials by self-assembly of nano-building blocks programmed to generate specific lattices is among the most challenging goals of nanotechnology and has led to the recent concept of patchy particles. We report here a simple strategy to fabricate polystyrene nanoparticles with several silica patches based on the solvent-induced self-assembly of silica/polystyrene monopods. The latter are obtained with morphological yields as high as 99% by seed-growth emulsion polymerization of styrene in the presence of 100 nm silica seeds previously modified with an optimal surface density of methacryloxymethyl groups. In addition, we fabricate magnetic silica seeds by silica encapsulation of preformed maghemite supraparticles. The polystyrene pod, i.e., surface nodule, serves as a sticky point when the monopods are incubated in a bad/good solvent mixture for polystyrene, e.g., ethanol/tetrahydrofuran mixtures. After self-assembly, mixtures of particles with two, three, four silica or magnetic silica patches are mainly obtained. The influence of experimental parameters such as the ethanol/tetrahydrofuran volume ratio, monopod concentration and incubation time is studied. Further developments would consist of obtaining pure batches by centrifugal sorting and optimizing the relative position of the patches in conventional repulsion figures.

Application of 96-82-2, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 96-82-2.

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

Synthetic Route of 149809-43-8, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 149809-43-8, Name is ((3R,5R)-5-((1H-1,2,4-Triazol-1-yl)methyl)-5-(2,4-difluorophenyl)tetrahydrofuran-3-yl)methyl 4-methylbenzenesulfonate, SMILES is O=S(C1=CC=C(C)C=C1)(OC[C@H]2CO[C@](C3=CC=C(F)C=C3F)(CN4N=CN=C4)C2)=O, belongs to Tetrahydrofurans compound. In a article, author is Gong, Zhong-Liang, introduce new discover of the category.

Handedness-inverted polymorphic helical assembly and circularly polarized luminescence of chiral platinum complexes

Circularly polarized luminescence (CPL) materials have potential applications in three-dimensional (3D) displays, quantum encryption, and optical sensors. The development of single-component CPL materials with polymorphic assembly and handedness inversion remains a significant challenge. Herein, we present the access of such materials by controlling the underlying assembly pathway of well-designed chiral emitters. A pair of enantiomeric platinum complexes (R)-1 and (S)-1 decorated with a chiral alpha-methylbenzyl isocyanide ligand were prepared. By using the mixed-solvent (THF/n-hexane, THF=tetrahydrofuran) or high-concentration condition, these complexes were found to assemble via a cooperative or isodesmic pathway with significantly enhanced yellow or red emission, respectively. The aggregate samples obtained via these conditions show efficient CPL (dissymmery factor divide g(lum) divide >0.02, emission quantum yield phi>20%). Interestingly, different assembly pathway leads to helical nanoribbons or nanofibers with opposite handedness from the complex with the same molecular chirality. This has been unambiguously and consistently manifested by circular dichroism and CPL spectral analysis and transmission electron, scanning electron, and atomic force microscope studies. This work demonstrates an appealing example of constructing polymorphic helical architectures with highly efficient CPL and inverted handedness thanks to the excellent assembly and emission of platinum complexes.

Synthetic Route of 149809-43-8, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 149809-43-8.

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

Chemistry, like all the natural sciences, begins with the direct observation of nature¡ª in this case, of matter.104-61-0, Name is 5-Pentyldihydrofuran-2(3H)-one, SMILES is O=C1OC(CCCCC)CC1, belongs to tetrahydrofurans compound. In a document, author is Romanenko, G. V., introduce the new discover, Safety of 5-Pentyldihydrofuran-2(3H)-one.

STRUCTURE OF A Pd-ORGANIC PARAMAGNETIC

By the interaction of 2-bromo-4,4,5,5-tetramethyl-2-imidazoline-3-oxide-1-oxyl (NN-Br) with tetrakis(triphenylphosphine)palladium(0) a new paramagnetic palladium-organic compound [Pd(NN)(PPh3)(2)Br] is synthesized. The crystal structure of its tetrahydrofuran solvate is determined by X-ray diffraction. The obtained data allow us to expect that the effective Pd-C bond eclipsing by phenyl rings deactivates the compound in a cross-coupling reaction with aryl halides and provides its high kinetic stability under normal conditions. Magnetochemical studies show the presence of weak antiferromagnetic exchange interactions between spins of paramagnetic [Pd(NN)(PPh3)(2)Br].

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 104-61-0 is helpful to your research. Safety of 5-Pentyldihydrofuran-2(3H)-one.

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

Application of 108-30-5, Chemo-enzymatic cascade processes are invaluable due to their ability to rapidly construct high-value products from available feedstock chemicals in a one-pot relay manner. 108-30-5, Name is Dihydrofuran-2,5-dione, SMILES is O=C(CC1)OC1=O, belongs to tetrahydrofurans compound. In a article, author is Yaragani, Muralikrishna, introduce new discover of the category.

Design and synthesis of novel tetrahydrofuran cyclic urea derivatives as androgen receptor antagonists

In order to improve the antiproliferative activity of androgen receptor (AR) antagonists, which used clinically for the treatment of prostate cancer that is a major cause of male death in worldwide, we report the design and synthesis of a series of tetrahydrofuran cyclic urea-based non-steroidal small molecule AR antagonists and exhibit potent AR antagonistic activity. These molecules with higher stereochemical aspects have been achieved by changing the hydantoin analogue antiandrogens to 4-(2-oxohexahydro-1H-furo[3,4-d] imidazol-1-yl)-2-(trifluoromethyl)benzonitrile analogues. Here, the thio-hydantoin pharmacophore of the recently reported antagonists is replaced by tetrahydrofuran cyclic urea. The antiproliferative properties of these molecules have been evaluated against androgen-dependent (LNCaP) cell line. Among the reported molecules, 4-(2-oxohexahydro-1H-furo[3,4-d]imidazol-1-yl)-2-(trifluoromethyl)benzonitrile (AR04) showed significantly improved in vitro activity, IC50= 3.926 mu M. Molecular structure-activity relationship studies confirm that the oxetane analogueAR04is distinct from other synthesized AR antagonists. These results have suggested thatAR04exhibiting their potential as a lead compound for the alternative treatment of prostate cancer.

Application of 108-30-5, Consequently, the presence of a catalyst will permit a system to reach equilibrium more quickly, but it has no effect on the position of the equilibrium as reflected in the value of its equilibrium constant.I hope my blog about 108-30-5 is helpful to your research.

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

Related Products of 706-14-9, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C¨CH bond functionalisation has revolutionised modern synthetic chemistry. 706-14-9, Name is gamma-Decanolactone, SMILES is O=C1OC(CCCCCC)CC1, belongs to tetrahydrofurans compound. In a article, author is Date, Nandan S., introduce new discover of the category.

One Pot Hydrogenation of Furfural to 2-Methyl Tetrahydrofuran over Supported Mono- and Bi-metallic Catalysts

2-Methyltetrahydrofuran is a valuable commercial product that can be obtained by direct hydrogenation of furfural. In the present study, among several carbon supported bimetallic Ir-Ni catalysts with different loadings screened, 4% Ir-4% Ni/C catalyst showed excellent activity in terms of direct conversion (99%) to 2-MeTHF with a maximum selectivity of similar to 74% at 220 degrees C and 750 psig, suppressing the formation of side chain as well as ring opening products. The catalytic activity was found to be mainly affected by catalyst preparation methods, metal loadings, surface composition, temperature, pressure and catalyst loading. HR-TEM and STEM revealed well dispersed Ir-Ni NPs having the particle sizes in the range of 2 to 5 nm. Different phases of Ir i. e. Ir degrees and IrO(2)as well as oxygen vacancies were found to be responsible for hydrogenation of furfural to 2-methyl furan while, Ni degrees and NiO were responsible for further hydrogenation to 2-MeTHF. The synergic effect between Ir and Ni was established through XPS, H-2-TPR analysis. With the help of some control experiments, the plausible reaction pathway was also proposed. The catalyst prepared by co-impregnation method found more effective than prepared by sequential addition method. At lower Ni loadings of 1% and 2%, low temperature of 160 degrees C as well as at low H(2)pressure of 250 psig, mixture of furfuryl alcohol and 2-methyl furan were formed selectively. Catalyst could be successfully reused up to 3 times without leaching of metals.

Related Products of 706-14-9, The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 706-14-9 is helpful to your research.

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