Tag: M.W=100-150

Wu, Zhi-Lei; Wang, Jian; Wang, Shuo; Zhang, Ya-Xin; Bai, Guo-Yi; Ricardez-Sandoval, Luis; Wang, Gui-Chang; Zhao, Bin published the artcile< Controllable chemoselective hydrogenation of furfural by PdAg/C bimetallic catalysts under ambient operating conditions: an interesting Ag switch>, Recommanded Product: (Tetrahydrofuran-2-yl)methanol, the main research area is chemoselective hydrogenation furfural PdAg carbon bimetallic catalyst.

Hydrogenation of furfural to value-added chem. products is largely hindered by its multiple reaction pathways and complicated product distribution. Thus, to selectively achieve the desired products, catalysts with precise catalytic properties are highly required. Herein, a series of PdAg bimetallic nanoparticles (NPs) of similar size and tunable composition supported on activated carbon (Pd4Ag1/C, Pd2Ag1/C, Pd1Ag1/C and Pd2Ag3/C) were synthesized in a controlled manner and applied in the selective hydrogenation of furfural. Interestingly, an obvious composition-dependent catalytic performance was observed: upon incrementally increasing the proportion of Ag in PdAg NPs, the hydrogenation selectivity can transform from tetrahydrofurfuryl alc. (sel. 94% for Pd4Ag1/C) to furfuryl alc. (sel. 95% for Pd1Ag1/C) with nearly complete conversion (99%) of furfural. DFT calculations revealed that the adsorption free energy of in situ generated furfuryl alc. on Pd(111) surface is inversely proportional correlated with the Ag content in PdAg bimetallic NPs, which accounts for the alteration of chemoselectivity. Importantly, the present study is the first demonstration of composition-induced selectivity reversal for the hydrogenation of furfural under ambient conditions (25°C, 0.1 MPa H2).

Green Chemistry published new progress about Hydrogenation, chemoselective. 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

Bennett, Gregory B.; Houlihan, William J.; Mason, Robert B.; Engstrom, Robert G. published the artcile< Synthesis and biological evaluation of substituted 2,2'-oxybis(propionic acid) derivatives and related compounds>, Application In Synthesis of 5455-94-7, the main research area is hypolipidemic oxybispropionic acid derivative; propionic acid derivative hypolipidemic; furan derivative hypolipidemic.

A series of 2,2′-oxybis(propionic acid) derivatives, cyclic imides, and other analogs was prepared and hypolipidemic activity measured. The lipid-lowering activity of various 2,2,5,5-tetrasubstituted furan derivatives was also measured. No significant hypolipidemic activity was observed Structure-activity relationships are discussed.

Journal of Medicinal Chemistry published new progress about Lipids Role: BIOL (Biological Study). 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Application In Synthesis of 5455-94-7.

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

Liu, Wei; Yang, Yusen; Chen, Lifang; Xu, Enze; Xu, Jiaming; Hong, Song; Zhang, Xin; Wei, Min published the artcile< Atomically-ordered active sites in NiMo intermetallic compound toward low-pressure hydrodeoxygenation of furfural>, Application of C5H10O2, the main research area is nickel molybdenum intermetallic compound furfural hydrodeoxygenation catalyst.

Activation of oxygen-containing functional groups plays a key role in sustainable biomass upgrading and conversion. In this work, a NiMo intermetallic compound (IMC) catalyst was prepared based on layered double hydroxides (LDHs) precursors, which displayed prominent catalytic performance for furfural hydrodeoxygenation (HDO) to 2-methylfuran (2-MF) (yield: 99%) at a rather low hydrogen pressure (0.1 MPa), significantly superior to NiMo alloy, monometallic Ni and other Ni-based catalysts ever reported. CO-IR, STEM, EXAFS and XANES give direct evidences that the atomically-ordered Ni/Mo sites in NiMo IMC determine the uniform bridging-type adsorption mode of C=O bond in furfural while adsorption of furan ring is extremely suppressed. In situ FT-IR and DFT calculation further substantiate that ordered Ni-Mo bimetallic sites of IMC, in contrast to the random at. sequence in NiMo alloy, facilitate the activation and cleavage of C-OH bond in the intermediate (furfuryl alc., FOL), accounting for the production of 2-MF. This work demonstrates the decisive effect of atomically-ordered active sites in IMC catalyst on activation of oxygen-containing functional groups and product selectivity, which can be extended to catalytic upgrading of biomass-derived platform mols.

Applied Catalysis, B: Environmental published new progress about Deoxidation. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application of C5H10O2.

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

Ruan, Luna; Zhang, Huan; Zhou, Man; Zhu, Lihua; Pei, An; Wang, Jiexiang; Yang, Kai; Zhang, Chuanqun; Xiao, Suqun; Chen, Bing Hui published the artcile< A highly selective and efficient Pd/Ni/Ni(OH)2/C catalyst for furfural hydrogenation at low temperatures>, Quality Control of 97-99-4, the main research area is furfural hydrogenation nickel palladium carbon nanocatalyst furfuryl alc.

Hydrogenation of furfural (FF) produces a train of products such as furfuryl alc. (FFA), tetrahydrofurfuryl alc. (THFFA) and 2-methylfuran (2-MF). The Pd/Ni/Ni(OH)2/C nanocatalyst was successfully prepared under mild conditions by hydrazine hydrate reduction and galvanic replacement methods. Pd/Ni/Ni(OH)2/C had much higher conversion of furfural and selectivity toward furfuryl alc. for the selective hydrogenation of furfural than the monometallic catalysts (eg. Pd/C or Ni/C) due to its unique nanostructure of palladium island-on-Ni/Ni(OH)2 nanoparticles and thus the synergy effect between Pd, Ni and Ni(OH)2 related species. The proposed mechanism of the synergistic effect was also provided. Pd/Ni/Ni(OH)2/C showed high selectivity (90.0% or 92.4%) to furfuryl alc. at quite low reaction temperatures (5°C or 10°C), and had good stability. We used various characterization techniques (XRD, HRTEM, STEM-EDS elemental mapping and line-scanning, XPS, HS-LEIS) to compare the nanostructural differences between the monometallic and bimetallic catalysts as well as to explain the possible reasons for the superior performance of Pd/Ni/Ni(OH)2/C to corresponding monometallic catalysts.

Molecular Catalysis published new progress about Hydrogenation. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Quality Control of 97-99-4.

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

Weerachawanasak, Patcharaporn; Krawmanee, Pacharaporn; Inkamhaeng, Weerachat; Cadete Santos Aires, Francisco J.; Sooknoi, Tawan; Panpranot, Joongjai published the artcile< Development of bimetallic Ni-Cu/SiO2 catalysts for liquid phase selective hydrogenation of furfural to furfuryl alcohol>, Application of C5H10O2, the main research area is development bimetallic nickel copper SiO2 catalyst liquid hydrogenation furfural.

Bimetallic Ni-Cu/SiO2 catalysts with different Cu loading (2-5 wt%) were developed for liquid phase selective hydrogenation of furfural to furfuryl alc. Among these, bimetallic 2%Ni-X%Cu/SiO2 (X = 2, 5) catalysts exhibited better catalytic performances than monometallic 2%Ni/SiO2 and 2%Cu/SiO2. Moreover, the bimetallic 2%Ni-5%Cu/SiO2 catalyst showed the best catalytic performance with 94% of furfural conversion and 64% of furfuryl alc. selectivity. The synergetic effect of NiCu alloy particles that are present on bimetallic Ni-Cu/SiO2 catalysts change the adsorption configuration of furfural on the catalyst surface resulting in high catalytic performance in liquid phase selective hydrogenation of furfural to furfuryl alc.

Catalysis Communications published new progress about Hydrogenation catalysts. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Application of C5H10O2.

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

Wappes, Ethan A.; Vanitcha, Avassaya; Nagib, David A. published the artcile< β C-H di-halogenation via iterative hydrogen atom transfer>, SDS of cas: 5455-94-7, the main research area is geminal dihalide regioselective preparation; imidate preparation photochem tandem dihalogenation hydrogen transfer.

A radical relay strategy for mono- and di-halogenation (iodination, bromination, and chlorination) of sp3 C-H bonds was developed. This is the first example of β C-H di-halogenation is achieved through sequential C-H abstraction by iterative, hydrogen atom transfer (HAT). A double C-H functionalization was enabled by in-situ generated imidate radicals, which facilitate selective N to C radical translocation and tunable C-X termination. The versatile, geminal di-iodide products were further elaborated to β ketones and vinyl iodides. Mechanistic experiments explained the unique di-functionalization selectivity of this iterative HAT pathway, wherein the second C-H iodination is twice as fast as the first.

Chemical Science published new progress about Aliphatic alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 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

Taylor, Martin J.; Beaumont, Simon K.; Islam, Mohammed J.; Tsatsos, Sotirios; Parlett, Christopher A. M.; Issacs, Mark A.; Kyriakou, Georgios published the artcile< Atom efficient PtCu bimetallic catalysts and ultra dilute alloys for the selective hydrogenation of furfural>, Category: tetrahydrofurans, the main research area is atom PtCu bimetallic catalyst dilute alloy hydrogenation furfural.

A range of Pt:Cu bimetallic nanoparticles were investigated for the liquid-phase selective hydrogenation of furfural, an important platform biomass feedstock. Alloying of the two metals had a profound effect on the overall catalytic activity, providing superior rates of reaction and achieving the needed high selectivity towards furfuryl alc. Furthermore, we investigated the catalytic activity of an Ultra Dilute Alloy (UDA) formed via the galvanic replacement of Cu atoms by Pt atoms on dispersed host Cu nanoparticles (at. ratio Pt:Cu 1:20). This UDA, after overcoming an induction period, exhibits exceptionally high initial rates of hydrogenation under modest hydrogen pressures of 10 and 20 bar, rivalling the catalytic turnover for the monometallic Pt (containing 12 times more Pt), and outdoing the pure Cu or other compositions of bimetallic nanoparticle alloy catalysts. These atom efficient catalysts are ideal candidates for the valorization of furfural due to their activity and vastly greater economic viability.

Applied Catalysis, B: Environmentalpublished new progress about Hydrogenation catalysts. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Category: tetrahydrofurans.

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

Zhu, Yanru; Zhao, Wenfang; Zhang, Jian; An, Zhe; Ma, Xiaodan; Zhang, Zhijun; Jiang, Yitao; Zheng, Lirong; Shu, Xin; Song, Hongyan; Xiang, Xu; He, Jing published the artcile< Selective activation of C-OH, C-O-C, or C=C in furfuryl alcohol by engineered Pt Sites supported on layered double oxides>, Name: (Tetrahydrofuran-2-yl)methanol, the main research area is selective activation carbon OH oxygen furfuryl alc engineered.

The selective activation of targeted bonds in biomass-derived furfural or furfuryl alc. with complex chem. linkages (C-C/C-H/C-O, C=C/C=O, or C-O-H/C-O-C) is of great challenge for biomass upgrading, expecting well-defined catalyst and definite catalytically active sites. This work demonstrates an efficient targeted activation to C-OH, C-O-C, or C=C by engineering the structure of catalytic Pt sites, affording 2-methylfuran (2-MF), tetrahydrofurfuryl alc. (THFA), or 1,2-pentanediol (1,2-PeD) as product in the hydroconversion of furfuryl alc. The catalytic Pt sites have been engineered as at. Pt, coordination unsaturated Pt-Pt in atom-thick dispersion, or coordination unsaturated 3D Pt-Pt by tailoring the Pt dispersion (single atom, 2D cluster, or 3D cluster) on Mg and Al-containing layered double oxide (Mg(Al)O) support. The selective activation of C-OH, C-O-C, or C=C has been traced with the FT-IR spectra recorded surface reaction. On at. Pt, C-O-H is easily activated, with the assistance of Mg(Al)O support, with O-terminal adsorption without affecting furan C-O and C=C. However, C=C in the furan ring is easier to be activated on coordination-unsaturated Pt-Pt in atom-thick dispersion, resulting in a step-by-step hydrogenation to generate THFA. On coordination-unsaturated 3D Pt-Pt, the hydrogenolysis of furan ring is favored, resulting in the cleavage of furan C-O to produce 1,2-PeD. Also, the Mg(Al)O supports derived from Mg and Al layered double hydroxides (LDHs) here also play a key role in promoting the selectivity to 1,2-PeD by providing basic sites.

ACS Catalysispublished new progress about Hydrogenation. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Name: (Tetrahydrofuran-2-yl)methanol.

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

Liu, Qianhe; Liu, Qing; Hu, Xun published the artcile< Selective conversion of furfural into value-added chemical commodity in successive fixed-bed reactors>, Product Details of C5H10O2, the main research area is furfural commodity successive fixed bed reactor.

Successive hydrogenation of furfural in two fixed-bed reactors connected in tandem with Cu/SiO2 and Ni/SiO2 as the catalysts was achieved under atm. pressure. Various targeting products including furfuryl alc. (yield: 98.8%), 2-methylfuran (yield: 95.1%), 2-methyltetrahydrofuran (yield: 96.2%) and tetrahydrofurfuryl alc. (yield: 78.2%) could be obtained by variation of the reactor configurations.

Catalysis Communicationspublished new progress about Fixed-bed catalytic reactors. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Product Details of C5H10O2.

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

Bakharev, Vladimir V.; Gidaspov, Alexander A.; Zalomlenkov, Vladimir A.; Parfenov, Victor E.; Golovina, Olga V.; Slepukhin, Pavel A. published the artcile< Opening of the 1,3,5-triazine ring in 3-methyl-5-(trinitromethyl)tetrazolo[1,5-a][1,3,5]triazin-7-one by the action of alcohols>, COA of Formula: C5H10O2, the main research area is tetrazolotriazinone ring opening alc.

It was shown for the first time that in the reaction of 3-methyl-5-(trinitromethyl)tetrazolo[1,5-a][1,3,5]triazin-7-one with alcs. in the presence of bases, along with the expected substitution of the trinitromethyl group, opening of the 1,3,5-triazine ring with the addition of an alc. at the site of the C-N bond cleavage takes place. It was found that in the absence of bases only opening of the 1,3,5-triazine ring occurs with the formation of alkyl esters of {1-[(1-methyl-1H-tetrazol-5-yl)imino]-2,2,2-trinitroethyl}carbamic acid, and the trinitromethyl group retains high reactivity and can be substituted by the action of alcs. in the presence of a base.

Chemistry of Heterocyclic Compounds (New York, NY, United States)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, COA of Formula: C5H10O2.

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