Tag: M.W:100-200

Synthetic Route of 2144-40-3, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.2144-40-3, Name is (cis-Tetrahydrofuran-2,5-diyl)dimethanol, molecular formula is C6H12O3. In a article，once mentioned of 2144-40-3

Biomass into chemicals: Conversion of sugars to furan derivatives by catalytic processes

Recently, the production of furan derivatives from sugars has become exciting in chemistry and in catalysis studies, because it aids one of the major routes for achieving sustainable energy supply and chemicals production. 5-Hydroxymethylfurfural (5-HMF), 2,5-furan-dicarboxylic acid (2,5-FDCA) and 2,5-dimethylfuran (2,5-DMF) have been called the “sleeping giants” of renewable intermediate chemicals. 5-HMF is a dehydration product of hexoses and a potential substitute of petroleum-based building blocks of various polymers. 2,5-FDCA is derived from oxidative dehydration of hexoses and is considered as one of the top 12 compounds made from a sugar into a value-added chemical [T. Werpy, G. Petersen, Top Value Added Chemicals From Biomass, 2004. Available electronically at http://www.osti.gov/bridge]. 2,5-DMF is produced through hydrogenation of HMF and is less volatile and of 40% higher energy density than ethanol. This review discusses mainly the catalytic routes for the synthesis of 5-HMF, 2,5-FDCA, 2,5-DMF and other furanic derivatives from sugars. Meanwhile, the possible reaction mechanism for the conversion of hexoses is discussed, and furthermore, some promising research orientations and advantageous catalysts are suggested based on the major problems encountered in the recent research.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 2144-40-3

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

Electric Literature of 57203-01-7, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.57203-01-7, Name is (S)-(Tetrahydrofuran-2-yl)methanol, molecular formula is C5H10O2. In a article，once mentioned of 57203-01-7

Anti-Selective Catalytic Asymmetric Nitroaldol Reaction of alpha-Keto Esters: Intriguing Solvent Effect, Flow Reaction, and Synthesis of Active Pharmaceutical Ingredients

A rare-earth metal/alkali metal bimetallic catalyst proved particularly effective for enantioselectively coupling nitroalkanes and alpha-keto esters in an anti-selective manner to afford synthetically versatile, densely functionalized, and optically active alpha-nitro tertiary alcohols. A chiral diamide ligand captured two distinct metal cations, giving rise to a catalytically competent solid-phase heterobimetallic catalyst by simple mixing via self-assembly. The advantage of the solid-phase asymmetric catalyst was realized by successful application to the enantio- and diastereoselective reaction in a continuous-flow platform. The use of closely related solvents in terms of structures and polarity parameters, THF and its methylated congener 2-Me-THF, had an unexpectedly large solvent effect both on the reaction rate and the stereoselectivity. The nitroaldol products share a privileged unit for active pharmaceutical ingredients, as demonstrated by the streamlined enantioselective synthesis of the marketed antifungal agents efinaconazole and albaconazole.

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 57203-01-7

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

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Recommanded Product: Ethyl 2-oxotetrahydrofuran-3-carboxylate, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 77513-58-7, Name is Ethyl 2-oxotetrahydrofuran-3-carboxylate, molecular formula is C7H10O4

Cyclopropane Derivatives, 2. – Self-Acylation of alpha-Alkyl-gamma-lactones To Give Bis(1-alkylcyclopropyl)ketones via Spiro<4.4>acetals

High-yield synthetic ways are recommended for the title lactones 1.The coupling of two 2-alkyl-4-butanolides is possible in an inter-(1b, c) or intramolecular fashion (4c) to give spiro<4.4>acetals 8 or 9, respectively, in the absence of hindering substituents.Symmetrically substituted bis(1-alkylcyclopropyl)ketones 12 and 13 may be prepared by acidic cleavage of those spiro<4.4>acetals lacking 2,7-substituents.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. Recommanded Product: Ethyl 2-oxotetrahydrofuran-3-carboxylate, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 77513-58-7, in my other articles.

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

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, Recommanded Product: 4971-56-6, such as the rate of change in the concentration of reactants or products with time.In a article, mentioned the application of 4971-56-6, Name is Furan-2,4(3H,5H)-dione, molecular formula is C4H4O3

Synthesis and antibacterial activity of new lactone 1,4-dihydroquinoline derivatives

In this work, a series of lactone 1,4-dihydroquinoline derivatives 4 were efficiently synthesized and characterized by 1H and 13C NMR. The synthesized compounds were evaluated for their in vitro antibacterial activity against the bacterial strains Porphyromonas gingivalis, Prevotella nigrescens, Streptococcus mitis, and Streptococcus sanguinis and against Mycobacterium tuberculosis, Mycobacterium avium and Mycobacterium kansasii. The results revealed that the evaluated compounds were more active against Gram negative bacteria. Compounds 4ba, 4bb, 4bg, 4bi, 4bn, 4ch, and 4ci displayed moderate antibacterial activity against P. gingivalis. 4bi was the most active compound against the three strains of Mycobacterium. Based on structure?activity relationship studies, we observed that the presence of a nitro group on the benzylic ring and a methylenedioxy group on the dihydroquinoline ring enhanced the antibacterial activity of the derivatives.

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

Electric Literature of 1679-47-6, A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1679-47-6, Name is 3-Methyldihydrofuran-2(3H)-one, molecular formula is C5H8O2. In a Article，once mentioned of 1679-47-6

Reactions of unsaturated amides under hydroformylation conditions

N,N-diethyl methacrylamide (1) undergoes hydroformylation, followed by subsequent reactions, under “oxo” conditions involving use of Rh4(CO)12 or Rh4(CO)12 in the presence of (R,R)-Diop (Diop = <2,2-dimethyl-1,3-dioxolane-4,5-diylbis (methylene)bis(diphenylphosphine)) as the catalyst precursor.The product first formed arises from formylation at the unsubstituted unsaturated carbon atom, and subsequently gives alpha-methyl-gamma-butyrolactone (1b), N,N-diethyl 2-methyl-4-hydroxy-butyramide (1e), and N, N-diethyl 1-methyl-3-(diethylamino)butyramide (1f).Hydrogenation of the substrate takes also place.The product distribution can be strongly influenced by the reactions conditions.For N,N,N',N'-tetraethyl itacondiamide (2) under similar reactions conditions only hydrogenation and isomerization products are formed. Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law.Electric Literature of 1679-47-6. In my other articles, you can also check out more blogs about 1679-47-6

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

Related Products of 4971-56-6, Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. 4971-56-6, Name is Furan-2,4(3H,5H)-dione,introducing its new discovery.

A facile and expeditious microwave-assisted synthesis of furo[3,4-b]indeno[2,1-f]quinolin-1-one derivatives via multicomponent reaction

A series of furo[3,4-b]indeno[2,1-f]quinolin-1-one derivatives were synthesized by the condensation of an aromatic aldehyde with tetronic acid and 9H-fluoren-2-amine in solvent of glacial acetic acid under microwave irradiation. This procedure offers several advantages including operational simplicity, clean reaction, and increased safety for small-scale high-speed synthesis.

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

Application of 7331-52-4, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.7331-52-4, Name is (S)-4-Hydroxydihydrofuran-2(3H)-one, molecular formula is C4H6O3. In a article，once mentioned of 7331-52-4

Process for preparing 1,2, 4-butanetriol

An object of the present invention is to provide a process wherein 1, 2,4-butanetriol can be obtained safely, easily and inexpensively without causing problems concerning wastewater. A malic diester, 3-hydroxy-gamma-butyrolactone or 3,4-dihydroxybutanoate represented by the following formulae (I), or a mixture thereof is reduced with sodium borohydride in an organic solvent to give 1,2,4-butanetriol represented by the following formula (II). When an optically active substance is used as the above-mentioned starting compound, substantially no recemization occurs during the reduction, and optically active 1,2,4-butanetriol is obtained. 1

A reaction mechanism is the microscopic path by which reactants are transformed into products. Each step is an elementary reaction. In my other articles, you can also check out more blogs about 7331-52-4

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

Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments. Recommanded Product: 21461-84-7. Introducing a new discovery about 21461-84-7, Name is (S)-( )-5-Oxo-2-tetrahydrofurancarboxylic Acid

Palladium-Catalyzed Atom-Transfer Radical Cyclization at Remote Unactivated C(sp3)?H Sites: Hydrogen-Atom Transfer of Hybrid Vinyl Palladium Radical Intermediates

A novel mild, visible-light-induced palladium-catalyzed hydrogen atom translocation/atom-transfer radical cyclization (HAT/ATRC) cascade has been developed. This protocol involves a 1,5-HAT process of previously unknown hybrid vinyl palladium radical intermediates, thus leading to iodomethyl carbo- and heterocyclic structures.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Recommanded Product: 21461-84-7, you can also check out more blogs about21461-84-7

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

15833-61-1, Name is (Tetrahydrofuran-3-yl)methanol, belongs to tetrahydrofurans compound, is a common compound. Product Details of 15833-61-1In an article, once mentioned the new application about 15833-61-1.

NEW INDANYLOXYDIHYDROBENZOFURANYLACETIC ACID DERIVATIVES AND THEIR USE AS GPR40 RECEPTOR AGONISTS

The present invention relates to compounds of general formula (I), wherein the groups R1, R2 and m are defined as in claim 1, which have valuable pharmacological properties, in particular bind to the GPR40 receptor and modulate its activity. The compounds are suitable for treatment and prevention of diseases which can be influenced by this receptor, such as metabolic diseases, in particular diabetes type 2.

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

Application of 15833-61-1, The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature.15833-61-1, Name is (Tetrahydrofuran-3-yl)methanol, molecular formula is C5H10O2. In a Patent，once mentioned of 15833-61-1

Process for the preparation of 3-methyltetrahydrofuran

Disclosed is a process for the preparation of 3-methyltetrahydrofuran (3-MeTHF) which comprises contacting 3-formyltetrahydrofuran with hydrogen in the presence of a catalyst system comprising a Group VIII noble metal or rhenium and a strong acid under hydrogenolysis conditions of temperature and pressure to produce 3-MeTHF. The 3-MeTHF produced in accordance with the present invention is useful as an industrial solvent and, more importantly, as a monomer in the manufacture of polymers such as elastomers.

We’ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, the role of 15833-61-1, and how the biochemistry of the body works.Application of 15833-61-1

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