Tag: M.W=100-150

Jun, Minki; Yang, Heesu; Kim, Dongyong; Bang, Gi Joo; Kim, Minah; Jin, Haneul; Kwon, Taehyun; Baik, Hionsuck; Sohn, Jeong-Hun; Jung, Yousung; Kim, Heejin; Lee, Kwangyeol published the artcile< Pd3Pb Nanosponges for Selective Conversion of Furfural to Furfuryl Alcohol under Mild Condition>, Category: tetrahydrofurans, the main research area is furfural furfuryl alc palladium lead nanosponge selective conversion; bimetallic alloys; furfural; hydrogenation; nanoframes; palladium.

Alloy structures with high catalytic surface areas and tunable surface energies can lead to high catalytic selectivity and activities. Herein, the synthesis of sponge-like Pd3Pb multiframes (Pd3Pb MFs) is reported by using the thermodynamically driven phase segregation, which exhibit high selectivity (93%) for the conversion of furfural to furfuryl alc. (FOL) under mild conditions. The excellent catalytic performance of the Pd3Pb MF catalysts is attributed to the high surface area and optimized surface energy of the catalyst, which is associated with the introduction of Pb to Pd. D. functional theory calculations show that the binding energy of FOL to the surface energy-tuned Pd3Pb MF is sufficiently lowered to prevent side reactions such as over-hydrogenation of FOL.

Small Methods published new progress about Acetalization. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Category: tetrahydrofurans.

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

Harper, Kaid C.; Vilardi, Sarah C.; Sigman, Matthew S. published the artcile< Prediction of Catalyst and Substrate Performance in the Enantioselective Propargylation of Aliphatic Ketones by a Multidimensional Model of Steric Effects>, Product Details of C8H14O2, the main research area is catalyst substrate performance enantioselective propargylation aliphatic ketone steric effect.

The effectiveness of a new asym. catalytic methodol. is often weighed by the number of diverse substrates that undergo reaction with high enantioselectivity. Here we report a study that correlates substrate and ligand steric effects to enantioselectivity for the propargylation of aliphatic ketones. The math. model is shown to be highly predictive when applied to substrate/catalyst combinations outside the training set.

Journal of the American Chemical Society published new progress about Aliphatic ketones Role: RCT (Reactant), RACT (Reactant or Reagent). 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Product Details of C8H14O2.

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

Nikul’shin, P. A.; Ershov, M. A.; Grigor’yeva, E. V.; Tarazanov, S. V.; Kuznetsova, S. N.; Repina, O. V. published the artcile< Furfural Derivatives as Fuel Components>, Formula: C5H10O2, the main research area is furfural derivative fuel component additive.

Furfural derivatives prepared from vegetable raw materials have recently become popular as high-performance fuel additives. Furfural oxygenates are particularly of interest. A lot of research was devoted to preparing new materials from furfural, however, there is much to be discovered about their effect on physicochem. properties of fuels. The possibility of using furfural derivatives, obtained by their hydrogenation on copper and nickel catalysts with full conversion of furfural, as additives to fuel is considered in this article. Their impact on antiknock properties and chem. stability is evaluated. Futons are mostly effective in low-octane hydrocarbon bases, such as hydrocracking gasoline, at a concentration of 5-30 weight %. A high concentration of potential resins can lead to the formation of deposits in the combustion chamber of the engine, which, in turn, requires addnl. research.

Chemistry and Technology of Fuels and Oils published new progress about Biomass hydrotreatment. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Formula: C5H10O2.

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

Zhang, Jinxin; Mao, Donglei; Wu, Dongfang published the artcile< Industrially Applicable Aqueous-Phase Selective Hydrogenation of Furfural on an Efficient TiOx-Modified Ni Nanocatalyst>, Recommanded Product: (Tetrahydrofuran-2-yl)methanol, the main research area is industrially aqueous phase selective hydrogenation furfural titania nickel nanocatalyst.

Because water is involved in the formation of furfural (FFR), aqueous-phase selective hydrogenation of FFR to furfuryl alc. (FOL) has the potential for industrial applications, but it has not yet been well exploited. Here, partially reduced TiOx-modified Ni nanocatalysts were studied. The Ni-TiO2 interaction adjusts the Ni electron structure and affects the catalyst adsorption properties. FFR is adsorbed on the TiOx oxygen vacancy (OV) by C=O, and the FOL selectivity is pos. correlated with the surface OV content. The active H atoms dissociated on Ni spillover to the TiOx surface and then attack the adsorbed FFR C=O. The precise synergistic effect of Ni and OV improves the comprehensive performance of FFR hydrogenation. Under mild conditions, FFR conversion can reach 92.5% and FOL selectivity can be as high as 96.8%. This is an extremely excellent performance of aqueous-phase FFR selective hydrogenation, and thus, the TiOx-modified Ni nanocatalyst is a very promising candidate for industrial applications.

ACS Sustainable Chemistry & Engineering published new progress about Activation energy. 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

Du, Hong; Ma, Xiuyun; Jiang, Miao; Yan, Peifang; Conrad Zhang, Z. published the artcile< Highly efficient Cu/SiO2 catalyst derived from ethanolamine modification for furfural hydrogenation>, Recommanded Product: (Tetrahydrofuran-2-yl)methanol, the main research area is copper SiO2 catalyst ethanolamine furfural hydrogenation.

The production of furfuryl alc. from furfural hydrogenation in gas phase is of great significance for the valorization of biomass. The existing catalyst for this transformation suffers from high cost and complex preparation process. Thus, a highly efficient copper catalyst was developed by a simple impregnation method using ethanolamine modified granular silica as carrier. The catalytic performance was related to the amount of ethanolamine used in modification. Highly dispersed copper with uniform particle size distribution was obtained from appropriate amount of ethanolamine modified granular silica. The ethanolamine modified granular silica (mass ratio between ethanolamine and silica was 3 in the initial modification mixture) supported copper catalyst exhibited the best performance in terms of catalyst lifetime thanks to its maximum amount of Cu0 sites and largest amount of Cu+ sites. A slow deactivation of the catalyst after extended time on stream evaluation is attributed to carbon deposition and slow copper sintering.

Applied Catalysis, A: General published new progress about Hydrogenation. 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

Li, Zhuo-Fei; Shen, Yan; Cui, Wen-Gang; Zhang, Qiang; Hu, Tong-Liang published the artcile< MOF derived non-noble metal catalysts to control the distribution of furfural selective hydrogenation products>, Application In Synthesis of 97-99-4, the main research area is metal organic framework catalyst furfural selective hydrogenation.

Furfural, as one of the most important and attractive platform mols., could produce high-value chems. through selective hydrogenation, which had attracted wide attention in recent years. Hereon, a ZnCo bimetal ZIF (ZnCo-ZIF-US) was quickly and efficiently prepared by an ultrasonic-assisted method, and a series of nitrogen-doped carbon-coated bimetallic composites (ZnCo-US@NC-T, T refers to the calcination temperature) were prepared by a one-step calcination technique from ZnCo-ZIF-US and their structures were characterized in detail by PXRD, SEM, TEM, and XPS, etc. The obtained ZnCo-US@NC-700 showed higher catalytic performance in the selective hydrogenation of furfural to furfuryl alc. than the derivatives of ZnCo bimetal ZIF prepared without ultrasonic-assisted. Surprisingly, the results showed the presence or absence of Zn in the catalysts could regulate the hydrogenation products of furfural to produce furfuryl alc. or tetrahydrofurfuryl alc. In addition, the catalyst could be recycled with almost no significant change in catalytic performance and its microstructure was still well maintained. This work provides an ingenious strategy for the selective regulation of biomass products.

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

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

Hirai, Hajime; Ueda, Kenzo; Matsui, Masanao published the artcile< Studies on chrysanthemic acid. Part XXV. Alternative synthesis of chrysanthemic acid via tetrahydrofuran derivatives>, Application of C8H14O2, the main research area is chrysanthemic acid insecticide; chloromethylchloroisopropylhexanoic acid ester.

The olefination reaction between 2,2,5,5-tetramethyltetrahydrofuran-3-one and (EtO)2P(:O)CH2CO2Et afforded an isomeric mixture of the normal α,β-unsaturated ester (I) and the endocyclic β,γ-unsaturated ester (II). Catalytic hydrogenation and subsequent hydrolysis of the mixture gave 2,2,5,5-tetramethyltetrahydrofuryl-3-acetic acid III. III was treated with SOCl2 in the presence of ZnCl2 to give Me2CClCH(CH2CO2Et)CH2CClMe2, from which trans-chrysanthemic acid was obtained by a known method. Pyrocin was also obtained in good yield by heating III with BF3-etherate.

Agricultural and Biological Chemistry published new progress about Insecticides. 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Application of C8H14O2.

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

Stokes, P. W.; Foster, S. P.; Casey, M. J. E.; Cocks, D. G.; Gonzalez-Magana, O.; de Urquijo, J.; Garcia, G.; Brunger, M. J.; White, R. D. published the artcile< An improved set of electron-THFA cross sections refined through a neural network-based analysis of swarm data>, Electric Literature of 97-99-4, the main research area is alpha tetrahydrofurfuryl alc electron transport neural network simulation.

We review exptl. and theor. cross sections for electron transport in α-tetrahydrofurfuryl alc. (THFA) and, in doing so, propose a plausible complete set. To assess the accuracy and self-consistency of our proposed set, we use the pulsed-Townsend technique to measure drift velocities, longitudinal diffusion coefficients, and effective Townsend first ionization coefficients for electron swarms in admixtures of THFA in argon, across a range of d.-reduced elec. fields from 1 to 450 Td. These measurements are then compared to simulated values derived from our proposed set using a multi-term solution of Boltzmann’s equation. We observe discrepancies between the simulation and experiment, which we attempt to address by employing a neural network model that is trained to solve the inverse swarm problem of unfolding the cross sections underpinning our exptl. swarm measurements. What results from our neural network-based anal. is a refined set of electron-THFA cross sections, which we confirm is of higher consistency with our swarm measurements than that which we initially proposed. We also use our database to calculate electron transport coefficients in pure THFA across a range of reduced elec. fields from 0.001 to 10 000 Td. (c) 2021 American Institute of Physics.

Journal of Chemical Physics published new progress about Anodes. 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

Cocq, Aurelien; Leger, Bastien; Noel, Sebastien; Bricout, Herve; Djedaini-Pilard, Florence; Tilloy, Sebastien; Monflier, Eric published the artcile< Anionic Amphiphilic Cyclodextrins Bearing Oleic Grafts for the Stabilization of Ruthenium Nanoparticles Efficient in Aqueous Catalytic Hydrogenation>, Recommanded Product: (Tetrahydrofuran-2-yl)methanol, the main research area is oleic succinyl beta cyclodextrin ruthenium nanoparticle catalyst preparation; petrosource biosource unsaturated compound benzene furfural hydrogenation ruthenium catalyst.

Oleic succinyl β-cyclodextrin was proved to be efficient for the stabilization of ruthenium nanoparticles (NPs) in aqueous medium. The catalytic activity of these NPs was evaluated in the aqueous hydrogenation of petrosourced and biosourced unsaturated compounds such as benzene and furfural derivatives The catalytic system can be easily recycled and reused up to nine runs without any loss of activity and selectivity, demonstrating its robustness.

ChemCatChem published new progress about Alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 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

Paraja, Miguel; Hao, Xiaoyu; Matile, Stefan published the artcile< Polyether Natural Product Inspired Cascade Cyclizations: Autocatalysis on π-Acidic Aromatic Surfaces>, Application In Synthesis of 97-99-4, the main research area is oligooxolane preparation; oligoepoxide preparation cascade ring opening cyclization autocatalysis kinetics; autocatalysis; cyclization; polyethers; synthetic methods; π interactions.

Anion-π catalysis functions by stabilizing anionic transition states on aromatic π surfaces, thus providing a new approach to mol. transformation. The delocalized nature of anion-π interactions suggests that they serve best in stabilizing long-distance charge displacements. Aiming therefore for an anionic cascade reaction that is as charismatic as the steroid cyclization is for conventional cation-π biocatalysis, reported here is the anion-π-catalyzed epoxide-opening ether cyclizations of oligomers. Only on π-acidic aromatic surfaces having a pos. quadrupole moment, such as hexafluorobenzene to naphthalenediimides, do these polyether cascade cyclizations proceed with exceptionally high autocatalysis (rate enhancements kauto/kcat >104 M-1). This distinctive characteristic adds complexity to reaction mechanisms (Goldilocks-type substrate concentration dependence, entropy-centered substrate destabilization) and opens intriguing perspectives for future developments.

Angewandte Chemie, International Edition published new progress about Autocatalysis. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application In Synthesis of 97-99-4.

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