Tag: M.W=100-150

Arumugam, Selvamani; Kuppan, Jayaprakash; Devaraj, Murugan; Arumugam, Sivasamy published the artcile< Fe-Pd-immobilized Al-pillared laponite clay as efficient catalyst for conversion of furfural into tetrahydrofurfuryl alcohol>, Name: (Tetrahydrofuran-2-yl)methanol, the main research area is iron palladium immobilized laponite hydrogenation catalyst furfural tetrahydrofurfuryl alc.

Furfural has been widely reported as a new-generation renewable source for the production of chems. and fuels. In this study, Fe-Pd immobilized Al-pillared laponite clay material with suitable catalytic properties was explored as an efficient catalyst for the direct conversion of furfural (FAL) into tetrahydrofurfuryl alc. (THFOL) under the mild reaction conditions (H2 pressure- 10 bar, temperature- 60°C and time- 4 h). The synthesized samples were characterized by several physico-chem. techniques. XRD, FT-IR, H2-TPR and ICP-OES results revealed the successful loading of those bi-metals into the Al-pillared laponite structure. Acidity of the sample has been thoroughly investigated by NH3-TPD and FT-IR techniques. The catalytic activity of synthesized samples was thoroughly evaluated for the total hydrogenation of FAL for the production of THFOL. It was observed that pure Fe-Pd catalyst showed very low FAL conversion (∼53%) and THFOL selectivity (∼38%), whereas the Al-pillared laponite clay supported Fe-Pd catalyst showed an increase in the FAL conversion and THFOL selectivity up to 95% and 98%, resp. The high performance of Fe-Pd/Al-pillared laponite catalyst towards the formation of THFOL is not only ascribed to the fine dispersion of Fe and Pd species and their synergistic effect but also due to the high surface area, mesoporosity and suitable acidity of Al-pillared laponite. The recyclability of the catalyst was also explored thoroughly which confirmed their stability. Sustainability of this process lies in the utilization of low-value bio-derived FAL for the production of industrially important THFOL chem.

ChemistrySelect published 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

Stucchi, Marta; Alijani, Sharam; Manzoli, Maela; Villa, Alberto; Lahti, Riikka; Galloni, M. G.; Lassi, Ulla; Prati, Laura published the artcile< A Pt-Mo hybrid catalyst for furfural transformation>, Product Details of C5H10O2, the main research area is platinum molybdenum catalyst furfural hydrogenation.

Furfural is a high-value chem., being the precursor of compounds such as furfuryl alc. and tetrahydrofurfuryl alc. Pt is known as active for furfural hydrogenation, but the high price limits its exploitation and imposes the search for alternatives. Here we presented a Pt/Mo bimetallic system with enhanced catalytic activity for furfural hydrogenation. For comparison, monometallic Mo- and Pt-supported on activated carbon have been prepared by impregnation and sol-immobilization. The bimetallic Pt/Mo was prepared impregnating the Mo-AC catalyst with Pt, using Na2PtCl4 as a precursor, PVA, and NaBH4 as reducing agent. HR-TEM analyses on Pt/Mo catalyst showed Mo-containing agglomerates embedded in the carbon matrix, displaying diffraction fringes with spacing typical of Mo4O11 in the orthorhombic phase, as well as Pt nanoparticles more evenly dispersed in the Mo-AC system compared to bare AC. The Pt/Mo catalyst showed higher activity than both monometallic ones, and it converted 92% of furfural to furfuryl alc. and Et furfuryl ether with 20% and 80% selectivity, resp. However, despite a lower initial activity, the monometallic Mo/AC catalyst showed a complete selectivity to the ether.

Catalysis Today published new progress about Binding energy. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Product Details of C5H10O2.

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

Pirmoradi, Maryam; Gulotty, Robert J.; Kastner, James R. published the artcile< Continuous hydroxyketone production from furfural using Pd-TiO2 supported on activated carbon>, Product Details of C5H10O2, the main research area is hydroxyketone furfural palladium titania activated carbon catalyst.

Pd-TiO2, Pd-Cu and Pd-Fe activated carbon (AC) supported catalysts were employed for continuous selective hydrogenation of furfural. The effect of reaction parameters on product selectivity and space time yield (STY) was determined Weak acid sites, generated by the Pd-TiO2 catalyst opened the furan ring and resulted in a STY of 134 g Lcat-1 h-1 (610 g kgcat-1 h-1) and 39% selectivity to 5-hydroxy-2-pentanone (5H2P), a hydrogenation product of furan ring opening, in a short residence time (7.6 min) at 180°C and 300 psig. The Pd-Cu and Pd-Fe catalysts were selective towards tetrahydrofurfuryl alc. and furfuryl alc. A STY of 259 g Lcat-1 h-1 (1182 g kgcat-1 h-1) and 42% selectivity to furfuryl alc. was achieved in the presence of the Pd-Cu catalyst at 180°C and 300 psig (3.8 min). The Pd/TiO2/AC catalyst shows promise for continuous production of 5H2P, a building block for many drugs and a precursor to 1,4-pentanediol.

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

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

Ren, Dezhang; Wang, Jingyi; Jiang, Xuelei; Song, Zhiyuan; Norinaga, Koyo; Huo, Zhibao published the artcile< A Supported Ni Catalyst Produced from Ni-Al Hydrotalcite-Like Precursor for Reduction of Furfuryl Alcohol to Tetrahydrofurfuryl Alcohol by NaBH4 in Water>, Synthetic Route of 97-99-4, the main research area is furfuryl alc reduction nickel catalyst preparation property.

Tetrahydrofurfuryl alc. (THFA) is a kind of high value-added compound in industry, which can be obtained from biomass chem. engineering. However, Synthesis of THFA under mild condition with green hydrogen donors remains a big challenge. In this article, a supported Ni catalyst derived from Ni-Al hydrotalcite-like compounds (HTs) as precursors for the reduction of furfuryl alc. (FA) into THFA with NaBH4 as reducing agent in water was first reported. As a result, Ni/Al2O3-HT exhibited high catalytic activity for the transformation, and THFA was achieved in 100% yield at 60°C for 60 min. Moreover, Ni/Al2O3-HT could be recycled at least seven times without the loss of its activity. Under optimized conditions, the reduction reaction of several furan and ketone compounds was investigated. A possible mechanism for the reduction of FA to afford THFA was also proposed.

ChemistrySelect published new progress about Pore size (volume). 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Synthetic Route of 97-99-4.

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

Wasacz, J. P.; Badding, V. G. published the artcile< A hydration of an alkyne illustrating steam and vacuum distillation>, HPLC of Formula: 5455-94-7, the main research area is laboratory experiment alkyne hydration; steam distillation laboratory experiment.

An experiment involving the conversion of 2,5-dimethyl-3-hexyne-2,5-diol to 2,2,5,5-tetramethyltetrahydrofuran-3-one, suitable for an early organic chem. laboratory course and using aqueous mercuric sulfate without the use of acid, is described. The experiment demonstrated several principles and techniques: hydration of an alkyne; steam distillation; vacuum distillation (optimal); drying of an organic liquid; stereochem.; synthesis of a ketone; keto-enol tautomerism; synthesis of a cyclic ether; and salting out techniques (optional).

Journal of Chemical Education published new progress about Alkynes Role: MSC (Miscellaneous). 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, HPLC of Formula: 5455-94-7.

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

Saimoto, Hiroyuki; Hiyama, Tamejiro; Nozaki, Hitosi published the artcile< Regiocontrolled formation of 4,5-dihydro-3(2H)-furanones from 2-butyne-1,4-diol derivatives. Synthesis of bullatenone and geiparvarin>, Recommanded Product: 2,2,5,5-Tetramethyldihydrofuran-3(2H)-one, the main research area is furanone dihydro; butynediol cyclization; bullatenone; geiparvarin.

Two new methods for selective hydration of 1,1,4-trisubstituted 2-butyne-1,4-diols (I) gave 4,5-dihydro-3(2H)-furanones. The first involves selective monoacetylation of the less hindered OH followed by Ag(I)-catalyzed rearrangement and cyclization. to give 3-acetoxy-2,2,5-trisubstituted 2,5-dihydrofurans (II) which on hydrolysis gave 2,2,5-trisubstituted 4,5-dihydro-3(2H)-furanones. Oxidation of II with 2,3-dichloro-5,6-dicyano-1,4-benzoquinone gave 3(2H)-furanones. This method gave naturally occurring 3(2H)-furanones, e.g., bullatenone and geiparvarin. The second approach gave the opposite regioisomer, 2,5,5-trisubstituted 4,5-dihydro-3(2H)-furanones, from diols I by treating the diols with Hg/Nafion-H.

Bulletin of the Chemical Society of Japan published new progress about Cyclization. 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Recommanded Product: 2,2,5,5-Tetramethyldihydrofuran-3(2H)-one.

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

Wang, Yanling; Liu, Cun; Zhang, Xiongfu published the artcile< One-Step Encapsulation of Bimetallic Pd-Co Nanoparticles Within UiO-66 for Selective Conversion of Furfural to Cyclopentanone>, Synthetic Route of 97-99-4, the main research area is bimetallic palladium cobalt furfural cyclopentanone nanoparticle.

The design of efficient catalysts is of important significance for the transformation of biomass into chems. In this work, bimetallic Pd-Co nanoparticles were encapsulated within UiO-66 to form a core-shell Pd-Co@UiO-66 catalyst via a facile one-step strategy. The as-synthesized Pd-Co@UiO-66 catalysts were characterized and applied to the selective hydrogenation of furfural (FUR) to cyclopentanone (CPO). Compared with the monometallic Pd@UiO-66, the Pd-Co@UiO-66 could demonstrate excellent performance with 96% CPO selectivity and 99% FUR conversion at 120°C under 3 MPa H2 pressure for 12 h. It was found that trace Co had synergetic and promoting effects on the catalytic performance. The core-shell catalysts showed more outstanding recyclability than the supported catalysts, which could maintain high CPO yield after 5th runs.

Catalysis Letters published new progress about Core-shell nanoparticles. 97-99-4 belongs to class tetrahydrofurans, and the molecular formula is C5H10O2, Synthetic Route of 97-99-4.

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

Yates, Peter; Burke, Patrick Michael published the artcile< Keto ethers. IV. Products formed on reaction of dihydro-2,2,5,5-tetramethyl-3(2H)-furanone with strong acids>, Synthetic Route of 5455-94-7, the main research area is tetramethylfuranone rearrangement acid; furanone tetramethyl rearrangement acid.

Reaction of furanone I with 96 or ca. 100% sulfuric acid or hot polyphosphoric acid followed by aqueous quenching gave the following products: 2-hydroxy-2,5-dimethyl-4-hexen-3-one, 2,4,4-trimethyl-2-cyclopenten-1-one, 3,5,5-trimethyl-2-cyclopenten-1-one, tetrahydro-3,4,5,5-tetramethylfuran-2,3-diol, 2,5-dihydro-3,5,5-trimethyl-2-methylenefuran and its dimer, 2,5-dihydro-2,3,5,5-tetramethyl-2-furanol, 4-hydroxy-2,4-dimethyl-2-pentenoic acid γ-lactone, 2,3,5-trimethyl-2-cyclopenten-1-one (II), and tetramethylfuran (III). In 96% sulfuric acid the products arise by ring opening, ring opening followed by reclosure to carbocyclic products, Me migration from C-2 to C-3 to give rearranged furan derivatives, and oxidation In ca. 100% sulfuric acid or hot polyphosphoric acid further Me migrations can occur to give II and III.

Canadian Journal of Chemistry published new progress about Rearrangement. 5455-94-7 belongs to class tetrahydrofurans, and the molecular formula is C8H14O2, Synthetic Route of 5455-94-7.

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

MacIntosh, Kathryn L.; Beaumont, Simon K. published the artcile< Nickel-Catalyzed Vapour-Phase Hydrogenation of Furfural, Insights into Reactivity and Deactivation>, Quality Control of 97-99-4, the main research area is nickel catalytic vapor phase hydrogenation furfural.

Furfural is a key bioderived platform mol., and its hydrogenation affords access to a number of important chem. intermediates that can act as drop-in replacements to those derived from crude oil or novel alternatives with desirable properties. Here, the vapor phase hydrogenation of furfural to furfuryl alc. at 180° over standard impregnated Ni catalysts is reported and contrasted with the same reaction over Cu chromite. While the selectivity to furfuryl alc. of the unmodified Ni catalysts is much lower than for Cu chromite as expected, the activity of the Ni catalysts in the vapor phase is significantly higher, and the deactivation profile remarkably similar. In the case of the supported Ni catalysts, possible contribution to the deactivation by acidic sites on the catalyst support is discounted based on the similarity of deactivation kinetics on Ni/SiO2 with those seen for less acidic Ni/TiO2 and Ni/CeO2. Powder x-ray diffraction is used to exclude sintering as a primary deactivation pathway. Significant coking of the catalyst (∼ 30% over 16 h) is observed using temperature programmed oxidation This, in combination with the solvent extraction anal. and IR spectroscopy of the coked catalysts points to deactivation by polymeric condensation products of (reactant or) products and hydrocarbon like coke. These findings pave the way for targeted modification of Ni catalysts to use for this important biofeedstock-to-chems. transformation.

Topics in 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

Ando, Wataru; Kumamoto, Yorio; Tokito, Norihiro published the artcile< Photolysis of a sterically protected bicyclic 1,2,3-selenadiazole>, Recommanded Product: 2,2,5,5-Tetramethyldihydrofuran-3(2H)-one, the main research area is selenadiazole sterically protected photolysis olefin; regioselective photochem cyclocondensation selenadiazole olefin; zwitterionic intermediate photolysis selenadiazole.

The photolysis of sterically protected 1,2,3-selenadiazole I in the presence of olefin (e.g. CH2:CHCN, CH2:CHCO2Me, cyclopentadiene) was studied. The regioselective cycloadducts e.g. II (R = CO2Me, cyano) were obtained via the initially formed zwitterionic intermediate.

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

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