Category: 37443-42-8

Mistrik, E. J. published an article about the compound: Methyl tetrahydrofuran-2-carboxylate( cas:37443-42-8,SMILESS:O=C(C1OCCC1)OC ).Synthetic Route of C6H10O3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:37443-42-8) through the article.

The hydroformylation of furans, e.g., 2-methylfuran, furfural, Me 2-furanacrylate and Me 2-furancarboxylate, in the presence of Co2(CO)8 and Co2(CO)7(PPh3)2 was studied. In addition to the products of hydroformylation, hydrogenation products were identified. The relative reactivity of the furans was estimated and a reaction mechanism proposed.

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Maris, Mihaela; Huck, Wolf-Rudiger; Mallat, Tamas; Baiker, Alfons published the article 《Palladium-catalyzed asymmetric hydrogenation of furan carboxylic acids》. Keywords: palladium cinchonidine catalyst asym hydrogenation furan carboxylic acid.They researched the compound: Methyl tetrahydrofuran-2-carboxylate( cas:37443-42-8 ).Reference of Methyl tetrahydrofuran-2-carboxylate. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:37443-42-8) here.

Enantioselective hydrogenation of aromatic and heteroaromatic compounds is the field where chirally modified metal hydrogenation catalysts have the biggest potential compared to homogeneous chiral transition metal complexes. Here we report the hydrogenation of furan and benzofuran carboxylic acids over a cinchonidine-modified 5 wt% Pd/Al2O3 catalyst. (S)-Tetrahydrofuran-2-carboxylic acid was synthesized in 4 h at rt and 30 bar with 95% yield and 32% ee. The ee was lower in the hydrogenation of methylfuran carboxylic acids but up to 100% de was achieved. In the slow hydrogenation of benzofuran-2-carboxylic acid, the ee went up to 50% at 29% yield. The potential application of the method is limited by the competing hydrogenation of the quinoline rings of cinchonidine in the latter reaction, necessitating the feeding of small amounts of cinchonidine during reaction. Still, this simple method using an easily available chiral modifier and catalyst affords the highest rate and ee reported so far in the catalytic asym. hydrogenation of furan and benzofuran carboxylic acids, and it may be an attractive route in combination with optical resolution We assume that the reaction mechanism is analogous to that described for α,β-unsaturated carboxylic acids over the same catalyst, involving a 1:2-type interaction between the cinchonidine and the acid dimer.

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The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Reactions of furan compounds. IV. High-temperature decomposition of the vapors of tetrahydrofuronitrile and Me tetrahydrofuroate to give 2,3-dihydrofuran and cyclopropanealdehyde》. Authors are Wilson, Christopher L..The article about the compound:Methyl tetrahydrofuran-2-carboxylatecas:37443-42-8,SMILESS:O=C(C1OCCC1)OC).SDS of cas: 37443-42-8. Through the article, more information about this compound (cas:37443-42-8) is conveyed.

Tetrahydrofuramide (I) is not dehydrated by COCl2 at high temperatures At 360-400° over silica gel, I gives a mixture of tetrahydrofuronitrile (II) and 2,3-dihydrofuran (III), together with some HCN; the yield of II at 290° was 74%, at 310° 55%, and at 330° 40% (yields are based on consumption, see Part III); over Na phosphate (pumice impregnated with 120 g. NaH2PO4 and 15 cc. H3PO4 in 85 cc. H2O and dried by heating slowly to 300°) at 400° the yield of II was 90%, consumption of I 50-85%. With N as carrier gas (2 l./hr.), 70% of II was recovered when passed over earthenware rings at 450°; 10% was impure III. Silica gel at 500° gives 20% of tetrahydrofuran (IV)-III mixture (48% of III), 10% of unchanged II and 10% of a compound (V), which may be CH2.CH2.C:CHCN, b. 130-40°. Na phosphate at 500° gives HCN, only a little III + IV and mainly cyclopropanecarboxaldehyde (VI), b14 42-4°; 2,4-dinitrophenylhydrazone, orange-red, m. 173-5°; p-nitrophenylhydrazone, golden-yellow, m. 129-32°; dimedon derivative, m. 160-2°. NH4 tetrahydrofuroate (aqueous solution containing an excess of NH3) over earthenware rings gives an equimol. mixture of the free acid and I; over silica gel at 500-600° V and II were formed; over Na phosphate, the temperature and carrier gas (N, CO2) appeared to have little influence on the results; between 450-550° there resulted 20-30% of a product b. 45-90° containing MeOH, III, and VI; over silica gel at 375°, the products were III and PrCHO (2,4-dinitrophenylhydrazone, orange-brown, m. 120-5°); at 400°, the ester gives 30% of a liquid containing some III and VI. VI was prepared in about 20% yield from Cl(CH2)3CN and SnCl2 in ether (saturated with HCl).

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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 Chiral ammonium hypoiodite salt-catalyzed enantioselective oxidative cycloetherification to 2-acyl tetrahydrofurans, published in 2016, which mentions a compound: 37443-42-8, Name is Methyl tetrahydrofuran-2-carboxylate, Molecular C6H10O3, Computed Properties of C6H10O3.

Chiral quaternary ammonium hypoiodite salt-catalyzed enantioselective oxidative cycloetherification of δ-hydroxyketone derivs was achieved . The corresponding 2-acyl tetrahydrofurans were obtained in high chem. yield with high enantioselectivity.

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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. published an article about the compound: Methyl tetrahydrofuran-2-carboxylate( cas:37443-42-8,SMILESS:O=C(C1OCCC1)OC ).Formula: C6H10O3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:37443-42-8) through the article.

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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Benzisoxazole – Wikipedia,
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Application In Synthesis 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 Cannizzaro reaction of aldehydes in TMAH thermochemolysis.

Recently, tetramethylammonium hydroxide (TMAH) was advantageously used in the anal. pyrolysis of polymers, but yielded a great amount of carboxylic acid Me esters which were absent in conventional pyrolysis. The experiments with model compounds such as furaldehyde, benzaldehyde, hydroxy-, methoxy-, dimethoxybenzaldehyde and vanillin show that TMAH can react not only as a methylating and/or hydrolyzing agent but also with aldehydes according to a Cannizzaro reaction and the reaction products can be in-situ methylated to the corresponding esters and ethers.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

Safety of Methyl tetrahydrofuran-2-carboxylate. 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 Palladium-catalyzed asymmetric hydrogenation of furan carboxylic acids. Author is Maris, Mihaela; Huck, Wolf-Rudiger; Mallat, Tamas; Baiker, Alfons.

Enantioselective hydrogenation of aromatic and heteroaromatic compounds is the field where chirally modified metal hydrogenation catalysts have the biggest potential compared to homogeneous chiral transition metal complexes. Here we report the hydrogenation of furan and benzofuran carboxylic acids over a cinchonidine-modified 5 wt% Pd/Al2O3 catalyst. (S)-Tetrahydrofuran-2-carboxylic acid was synthesized in 4 h at rt and 30 bar with 95% yield and 32% ee. The ee was lower in the hydrogenation of methylfuran carboxylic acids but up to 100% de was achieved. In the slow hydrogenation of benzofuran-2-carboxylic acid, the ee went up to 50% at 29% yield. The potential application of the method is limited by the competing hydrogenation of the quinoline rings of cinchonidine in the latter reaction, necessitating the feeding of small amounts of cinchonidine during reaction. Still, this simple method using an easily available chiral modifier and catalyst affords the highest rate and ee reported so far in the catalytic asym. hydrogenation of furan and benzofuran carboxylic acids, and it may be an attractive route in combination with optical resolution We assume that the reaction mechanism is analogous to that described for α,β-unsaturated carboxylic acids over the same catalyst, involving a 1:2-type interaction between the cinchonidine and the acid dimer.

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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics

COA of Formula: C6H10O3. 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 Synthesis of mono-acylation piperazine compounds. Author is Wang, Hong-fei; Zuo, Zheng-long; Yang, Qing-lai; Shen, Xu-ji; Zhao, Xin-feng; Zheng, Xiao-hui.

1-(2-Furoyl)piperazine (90.6%) and 1-(terahydro-2-furoyl)piperazine were synthesized by the esterification of 2-furoic acid and 2-tetrahydrofuroic acid with methanol, and then amidation with piperazine, resp. The structures were characterized by 1H NMR and IR.

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Benzisoxazole – Wikipedia,
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Application In Synthesis of Methyl tetrahydrofuran-2-carboxylate. 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 Electrochemical fluorination of several esters derived from oxolane-2-yl-carboxylic acid, oxolane-2-yl-methanol and oxane-2-yl-methanol. Author is Abe, Takashi; Tamura, Masanori; Sekiya, Akira.

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.

From this literature《Electrochemical fluorination of several esters derived from oxolane-2-yl-carboxylic acid, oxolane-2-yl-methanol and oxane-2-yl-methanol》,we know some information about this compound(37443-42-8)Application In Synthesis of Methyl tetrahydrofuran-2-carboxylate, but this is not all information, there are many literatures related to this compound(37443-42-8).

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Benzisoxazole – Wikipedia,
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COA of Formula: 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 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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Benzisoxazole – Wikipedia,
Benzisoxazole – an overview | ScienceDirect Topics