Category: 37443-42-8

Product Details of 37443-42-8. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about Selective hydrogenolysis of 2-furancarboxylic acid to 5-hydroxyvaleric acid derivatives over supported platinum catalysts. Author is Asano, Takehiro; Takagi, Hiroshi; Nakagawa, Yoshinao; Tamura, Masazumi; Tomishige, Keiichi.

The conversion of 2-furancarboxylic acid (FCA), which is produced by oxidation of furfural, to 5-hydroxyvaleric acid (5-HVA) and its ester/lactone derivatives with H2 was investigated. Monometallic Pt catalysts were effective, and other noble metals were not effective due to the formation of ring-hydrogenation products. Supports and solvents had a small effect on the performance; however, Pt/Al2O3 was the best catalyst and short chain alcs. such as methanol were better solvents. The optimum reaction temperature was about 373 K, and at higher temperature the catalyst was drastically deactivated by deposition of organic materials on the catalyst. The highest yield of target products (5-HVA, δ-valerolactone (DVL), and Me 5-hydroxyvalerate) was 62%, mainly obtained as Me 5-hydroxyvalerate (55% yield). The byproducts were mainly ring-hydrogenation compounds (tetrahydrofuran-2-carboxylic acid and its ester) and undetected ones (loss of carbon balance). The catalyst was gradually deactivated during reuses even at a reaction temperature of 373 K; however, the catalytic activity was recovered by calcination at 573 K. The reactions of various related substrates were carried out, and it was found that the O-C bond in the O-C=C structure (1,2,3-position of the furan ring) is dissociated before C=C hydrogenation while the presence and position of the carboxyl group (or methoxy carbonyl group) much affect the reactivity.

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SDS of cas: 37443-42-8. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about Chlorination of tetrahydrofuran-2-carboxylic acid esters. Author is Zhuk, R. A.; Berzina, A.; Silina, V.; Liepins, E.; Giller, S. A..

Photochem. chlorination of Me tetrahydro-2-furancarboxylate in CCl4 at -15 to -20° gave the chlorofurancarboxylate I and small amounts of the dihydrofuran II (8%) and Me 2-furancarboxylate (2%). Et tetrahydro-2-furancarboxylate was similarly chlorinated. The by-products were formed by dehydrochlorination of intermediate x-chlorination products.

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Zhurnal Obshchei Khimii called Reaction of methyl tetrahydropyromucate with aniline. XXXI, Author is Yur’ev, Yu. K.; Vendel’shtein, E. G., which mentions a compound: 37443-42-8, SMILESS is O=C(C1OCCC1)OC, Molecular C6H10O3, Category: benzisoxazole.

Passage of Me 2-furoate in a H atm. over Pd-asbestos at 160° gave 78% Me tetrahydro-2-furoate, b736 179.5-80.5°, n20D 1.4371, d204 1.1080. This (10 g.) and 27 g. PhNH2 passed in a N atm. over Al2O3 at 360° gave CO2, 14 g. PhNH2, and 1.5 g. 1-phenylpyrrolidine, b4 104-5°, n20D 1.5840, d204 1.0164; picrate, m. 116°. Passage of the ester at 360° over Al2O3 in a N atm. gave CO2, propene, and MeOH. Hydrolysis of the ester with 2 N NaOH 4 hrs. at reflux gave 76% free acid, a sirupy microcrystalline mass; this heated to 270-80° begins to lose CO2, which occurs freely at 300-5°, yielding furanidine, b755 65°, n20D 1.4088, d204 0.8899.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Asymmetric protonation of lithium enolate of α-amino acid derivatives using chiral Bronsted acids, published in 2001-12-31, which mentions a compound: 37443-42-8, Name is Methyl tetrahydrofuran-2-carboxylate, Molecular C6H10O3, SDS of cas: 37443-42-8.

Chiral alcs. possessing an asym. 2-oxazoline ring were synthesized as new chiral Bronsted acids from tetrahydro-2-furoic acid and (1S,2R)-2-amino-1,2-diphenylethanol. These alcs. were superior to (S,S)- or (R,R)-imide reported previously as a chiral proton source for enantioselective protonation of lithium enolate of an alanine derivative

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Safety of Methyl tetrahydrofuran-2-carboxylate. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about Asymmetric protonation of lithium enolate of α-amino acid derivatives using chiral Bronsted acids.

Chiral alcs. possessing an asym. 2-oxazoline ring were synthesized as new chiral Bronsted acids from tetrahydro-2-furoic acid and (1S,2R)-2-amino-1,2-diphenylethanol. These alcs. were superior to (S,S)- or (R,R)-imide reported previously as a chiral proton source for enantioselective protonation of lithium enolate of an alanine derivative

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Computed Properties of C6H10O3. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about Substituted tetrahydrofuroyl-1-phenylalanine derivatives as potent and specific VLA-4 antagonists. Author is Doherty, George A.; Yang, Ginger X.; Borges, Edite; Chang, Linda L.; MacCoss, Malcolm; Tong, Sharon; Kidambi, Usha; Egger, Linda A.; McCauley, Ermenegilda; Van Riper, Gail; Mumford, Richard A.; Schmidt, John A.; Hagmann, William K..

A series of substituted tetrahydrofuroyl-1-phenylalanine derivatives was prepared and evaluated as VLA-4 antagonists. Substitution of the α carbon of the THF with aryl groups increased the specificity for VLA-4 vs. α4β7 while amide substitution increased the potency of the series without increasing the specificity. Substitution of the β carbon of the THF with keto or amino groups slightly improved the specificity for VLA-4 vs. α4β7 but with a significant loss in binding affinity for VLA-4.

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Computed Properties of C6H10O3. So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic. Compound: Methyl tetrahydrofuran-2-carboxylate, is researched, Molecular C6H10O3, CAS is 37443-42-8, about Electrochemical fluorination of several esters derived from oxolane-2-yl-carboxylic acid, oxolane-2-yl-methanol and oxane-2-yl-methanol.

Electrochem. fluorination (ECF) of ester derivatives of (tetrahydro-2-furanyl)carboxylic acid (I), (tetrahydro-2-furanyl)methanol (II) and (2-oxanyl)methanol (III) were investigated. Perfluoro oxolane carbonyl fluoride was obtained from derivatives of I and II, and perfluoro(oxane-2-yl-carbonyl fluoride) was obtained from derivatives of III as the desired compounds, resp. From the ECF of acetates, perfluoro-spiro-ether derivatives having a dioxolane ring were also obtained as the cyclization product in low yield together with a perfluoro acid fluoride. The structure of these perfluoro-spiro-ether derivatives was confirmed by analyzing the chlorinated products, which were obtained by the reaction with AlCl3.

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Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 37443-42-8, is researched, SMILESS is O=C(C1OCCC1)OC, Molecular C6H10O3Journal, Journal of the American Chemical Society called Structural effects on rates and equilibriums. XVI. Effect of adjacent unshared electron pairs on ease of carbanion formation, Author is Hine, Jack; Dalsin, Philip D., the main research direction is carbanion formation structure effect.Computed Properties of C6H10O3.

The kinetics of NaOMe catalyzed D exchange of Me cyclopentanecarboxylate, two of its oxa derivatives and their acyclic analogs were studied in MeOD solution At 35° methyl cyclopentanecarboxylate exchanged 13 times as fast as Me α-ethylbutyrate, Me tetrahydro-2-furancarboxylate exchanged four times as fast as Me α-methoxybutyrate, and Me 1,3-dioxolane-2-carboxylate exchanged half as fast as Me dimethoxyacetate. From these results it was concluded that rates of carbanion formation may be decreased by repulsions between the unshared electron pairs of the carbanionic C atom and those of O atoms attached directly to it. Such repulsions may be minimized by appropriate rotation around the C-O bond in acyclic compounds but not as easily in cyclic compounds This electron repulsion effect operates in addition to the electronegativity effect, by which rates of formation of sp2-hybridized carbanions are slowed by highly electroneg. atoms attached directly to the site of carbanion formation. This interpretation of the results is analogous to that required to explain to explain recent observations on rates of pyramidal inversions at N and P.

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Synthesis called Photoinduced direct cyanation of C(sp3)-H bonds, Author is Hoshikawa, Tamaki; Yoshioka, Shun; Kamijo, Shin; Inoue, Masayuki, which mentions a compound: 37443-42-8, SMILESS is O=C(C1OCCC1)OC, Molecular C6H10O3, Computed Properties of C6H10O3.

A general and practical synthetic protocol for the direct transformation of unreactive C(sp3)-H bonds to C(sp3)-CN bonds has been developed. The homolytic cleavage of the C-H bond is initiated by photo-excited benzophenone, and the resulting carbon radical subsequently reacts with tosyl cyanide to afford the corresponding nitrile in a highly efficient manner. The present methodol. is widely applicable to various starting materials including ethers, alcs., amine derivatives, alkanes, and alkylbenzenes. This newly developed C-H cyanation protocol provides a powerful tool for selective one-carbon elongation for the construction of architecturally complex mols.

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So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Feng, Ze Wang; Zhao, Xin Qi; Bi, Hua researched the compound: Methyl tetrahydrofuran-2-carboxylate( cas:37443-42-8 ).Application of 37443-42-8.They published the article 《Selective esterification of non-conjugated carboxylic acids in the presence of conjugated or aromatic carboxylic acids over active carbon supported methanesulfonic acid》 about this compound( cas:37443-42-8 ) in Science in China, Series B: Chemistry. Keywords: carboxylic acid nonconjugated selective esterification conjugated aromatic carboxylic acid; ester preparation active carbon supported methanesulfonic acid catalyst. We’ll tell you more about this compound (cas:37443-42-8).

Non-conjugated carboxylic acids are selectively esterified in good yields in the presence of conjugated or aromatic carboxylic acids by stirring over active carbon supported methanesulfonic acid in dichloromethane at room temperature

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