Category: Tetrahydrofurans

In 2022,Li, Guangchen; Xing, Yangyang; Zhao, Hui; Zhang, Jin; Hong, Xin; Szostak, Michal published an article in Angewandte Chemie, International Edition. The title of the article was 《Chemoselective Transamidation of Thioamides by Transition-Metal-Free N-C(S) Transacylation》.Related Products of 696-59-3 The author mentioned the following in the article:

The first general, mild and highly chemoselective method for transamidation of thio-amides by NC(S) transacylation using non-nucleophilic anilines was reported. The method was broadly compatible with N-Ar tertiary thioamides and N-thioacyl-azoles as selective N-thioacyl transfer reagents. DFT studies that provided insight into the chemoselectivity of this new transamidation method and provided guidelines for the development of future transamidation methods of the thioamide bond.2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Related Products of 696-59-3) was used in this study.

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. Friedel Crafts reaction, for example, adds an alkyl or acyl group to aromatic ethers when they react with an alkyl or acyl halide in the presence of a Lewis acid as a catalyst.Related Products of 696-59-3

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

Product Details of 19444-84-9On March 10, 2021, Li, Zijian; Sun, Wenxuan; Wang, Xianxu; Li, Luyang; Zhang, Yong; Li, Chao published an article in Journal of the American Chemical Society. The article was 《Electrochemically Enabled, Nickel-Catalyzed Dehydroxylative Cross-Coupling of Alcohols with Aryl Halides》. The article mentions the following:

As alcs. are ubiquitous throughout chem. science, this functional group represents a highly attractive starting material for forging new C-C bonds. Here, it is demonstrated that the combination of anodic preparation of alkoxy triphenylphosphonium ion and nickel catalyzed cathodic reductive cross-coupling provides an efficient method to construct C(sp2)-C(sp3) bonds, in which free alcs. and aryl bromides e.g., bromobenzene-both readily available chems. can be directly used as coupling partners yielding arene derivative e.g., I. This nickel catalyzed paired electrolysis reaction features a broad substrate scope bearing a wide gamut of functionalities, which was illustrated by the late-stage arylation of several structurally complex natural products and pharmaceuticals. In addition to this study using 3-Hydroxydihydrofuran-2(3H)-one, there are many other studies that have used 3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9Product Details of 19444-84-9) was used in this study.

3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9) may be employed as starting reagent in the synthesis of series of seco-pseudonucleoside synthons via aminolysis. It may be employed as starting reagent in the synthesis of enantiomerically pure orthogonally protected δ-azaproline, via Mitsunobu reaction.Product Details of 19444-84-9

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

SDS of cas: 696-59-3In 2019 ,《Direct Synthesis of Multi-functional Pyrimidine, Pyrazine, and Pyridine Scaffolds via Inter-molecular and Intramolecular Annulations of 3-Amino-thieno[2,3-b]pyridine-2-carboxylate》 was published in Journal of Heterocyclic Chemistry. The article was written by El-Sayed, Hassan A.; Said, Said A.. The article contains the following contents:

A direct and facile synthesis of a new series of tricyclic and tetracyclic pyrimidine, pyrazine, and pyridine derivatives fused to thieno[2,3-b]pyridine was performed from Et carboxylate I as a synthon. The antibacterial results illustrated no significant results for the investigated compounds except compound II, which has moderate activity against Gram-pos. bacteria. The experimental process involved the reaction of 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3SDS of cas: 696-59-3)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.SDS of cas: 696-59-3

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

Formula: C6H12O3In 2022 ,《Facile and Scalable Methodology for the Pyrrolo[2,1-f][1,2,4]triazine of Remdesivir》 appeared in Organic Process Research & Development. The author of the article were Roy, Sarabindu; Yadaw, Ajay; Roy, Subho; Sirasani, Gopal; Gangu, Aravind; Brown, Jack D.; Armstrong, Joseph D. III; Stringham, Rodger W.; Gupton, B. Frank; Senanayake, Chris H.; Snead, David R.. The article conveys some information:

Pyrrolo[2,1-f][1,2,4]triazine (I) is an important regulatory starting material in the production of the antiviral drug remdesivir. Compound I was produced through a newly developed synthetic methodol. utilizing simple building blocks such as pyrrole, chloramine, and formamidine acetate by examining the mechanistic pathway for the process optimization exercise. Triazine I was obtained in 55% overall yield in a two-vessel-operated process. This work describes the safety of the process, impurity profiles and control, and efforts toward the scale-up of triazine for the preparation of kilogram quantity. In the experimental materials used by the author, we found 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Formula: C6H12O3)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Formula: C6H12O3

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

Name: 2,5-DimethoxytetrahydrofuranIn 2021 ,《Mo-Catalyzed One-Pot Synthesis of N-Polyheterocycles from Nitroarenes and Glycols with Recycling of the Waste Reduction Byproduct. Substituent-Tuned Photophysical Properties》 appeared in Chemistry – A European Journal. The author of the article were Hernandez-Ruiz, Raquel; Rubio-Presa, Ruben; Suarez-Pantiga, Samuel; Pedrosa, Maria R.; Fernandez-Rodriguez, Manuel A.; Tapia, M. Jose; Sanz, Roberto. The article conveys some information:

A catalytic domino reduction-imine formation-intramol. cyclization-oxidation for the general synthesis of a wide variety of biol. relevant N-polyheterocycles, such as quinoxaline- and quinoline-fused derivatives, and phenanthridines, is reported. A simple, easily available, and environmentally friendly dioxomolybdenum(VI) complex has proven to be a highly efficient and versatile catalyst for transforming a broad range of starting nitroarenes involving several redox processes. Not only is this a sustainable, step-economical as well as air- and moisture-tolerant method, but also it is worth highlighting that the waste byproduct generated in the first step of the sequence is recycled and incorporated in the final target mol., improving the overall synthetic efficiency. Moreover, selected indoloquinoxalines have been photophys. characterized in cyclohexane and toluene with exceptional fluorescence quantum yields above 0.7 for the alkyl derivatives The experimental process involved the reaction of 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Name: 2,5-Dimethoxytetrahydrofuran)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Name: 2,5-Dimethoxytetrahydrofuran

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

《IRMOF-3 biological activity enhancement by post-synthetic modification》 was written by Abdelhameed, Reda M.; Darwesh, Osama M.; Rocha, Joao; Silva, Artur M. S.. Recommanded Product: 696-59-3This research focused onzinc metal organic framework IRMOF3 derivative nanoparticle antimicrobial. The article conveys some information:

The growing resistance of pathogens to conventional antibiotics has become a public health problem requiring novel effective solutions In this context, metal-organic frameworks (MOFs) are attracting attention because they can act as reservoirs releasing metal ions with antibacterial properties. This action is reminiscent of that proposed for metal- and metal oxide-nanoparticles but different from the action of antibiotics. These features make MOFs promising candidates for pharmaceutical and biomedical applications. Here, IRMOF-3 was modified with 2,5-dimethoxytetrahydrofuran, N,N’-disuccinimidyl carbonate, acryloyl chloride, and phthalaldehyde to produce, resp., IRMOF-3-FU, IRMOF-3-SU, IRMOF-3-AC, IRMOF-3-DL in 38 to 90% yields. Remarkably, the biol. activity of these compounds evaluated against various bacterial and fungal strains is higher than the activity of com. antibiotics. The results came from multiple reactions, including the reaction of 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Recommanded Product: 696-59-3)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. Friedel Crafts reaction, for example, adds an alkyl or acyl group to aromatic ethers when they react with an alkyl or acyl halide in the presence of a Lewis acid as a catalyst.Recommanded Product: 696-59-3

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

《Fast Pyrolysis Oil Upgrading via HDO with Fe-Promoted Nb2O5-Supported Pd-Based Catalysts》 was published in Energies (Basel, Switzerland) in 2022. These research results belong to Campos Fraga, Mariana Myriam; Lacerda de Oliveira Campos, Bruno; Hendrawidjaja, Handoyo; Carriel Schmitt, Caroline; Raffelt, Klaus; Dahmen, Nicolaus. Synthetic Route of C4H6O3 The article mentions the following:

Due to the high acid, oxygen and water contents of fast pyrolysis oil, it requires the improvement of its fuel properties by further upgrading, such as catalytic hydrodeoxygenation (HDO). In this study, Nb2O5 was evaluated as a support of Pd-based catalysts for HDO of fast pyrolysis oil. A Pd/SiO2 catalyst was used as a reference Addnl., the impact of iron as a promoter in two different loadings was investigated. The activity of the synthesized catalysts was evaluated in terms of H2 uptake and composition of the upgraded products (gas phase, upgraded oil and aqueous phase) through elemental anal., Karl Fischer titration, GC-MS/FID and 1H-NMR. In comparison to SiO2, due to its acid sites, Nb2O5 enhanced the catalyst activity toward hydrogenolysis and hydrogenation, confirmed by the increased water formation during HDO and a higher content of hydrogen and aliphatic protons in the upgraded oil. Consequently, the upgraded oil with Nb2O5 had a lower average mol. weight and was therefore less viscous than the oil obtained with SiO2. When applied as a promoter, Fe enhanced hydrogenation and hydrogenolysis, although it slightly decreased the acidity of the support, owing to its oxophilic nature, leading to the highest deoxygenation degree (42.5 weight%) and the highest product HHV (28.2 MJ/kg). In addition to this study using 3-Hydroxydihydrofuran-2(3H)-one, there are many other studies that have used 3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9Synthetic Route of C4H6O3) was used in this study.

3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9) may be employed as starting reagent in the synthesis of series of seco-pseudonucleoside synthons via aminolysis. It may be employed as starting reagent in the synthesis of enantiomerically pure orthogonally protected δ-azaproline, via Mitsunobu reaction.Synthetic Route of C4H6O3

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

Safety of 2,5-DimethoxytetrahydrofuranIn 2022 ,《Lactam Strategy Using Amide-Selective Nucleophilic Addition for Quick Access to Complex Amines: Unified Total Synthesis of Stemoamide-Type Alkaloids》 was published in Bulletin of the Chemical Society of Japan. The article was written by Sugiyama, Yasukazu; Soda, Yasuki; Yoritate, Makoto; Tajima, Hayato; Takahashi, Yoshito; Shibuya, Kana; Ogihara, Chisato; Yokoyama, Takashi; Oishi, Takeshi; Sato, Takaaki; Chida, Noritaka. The article contains the following contents:

In this article, the authors report full details of the unified total synthesis of stemoamide-type alkaloids by chemoselective assembly of five-membered rings based on the lactam strategy. First, the concise and gram-scale synthesis of tricyclic stemoamide was achieved by vinylogous Michael addition-reduction sequence of an unsaturated γ-lactam with an unsaturated γ-lactone, followed by N-alkylation to form the seven-membered ring. From stemoamide as a common intermediate, chemoselective nucleophilic addition of unsaturated lactone derivatives provided tetracyclic natural products. While stemonine was obtained by an Ir-catalyzed lactam-selective reductive Mannich reaction, saxorumamide and isosaxorumamide were produced through the lactone-selective nucleophilic addition of the lithiated 2-silyl furan. The developed conditions for the lactam-selective nucleophilic reactions were highly general, and were found to be applicable to the total synthesis of pentacyclic stemocochinin and isostemocochinin. The strategy enabled the concise and unified total synthesis of tricyclic, tetracyclic and pentacyclic stemoamide-type alkaloids within 12 steps from a com. available compound The experimental part of the paper was very detailed, including the reaction process of 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Safety of 2,5-Dimethoxytetrahydrofuran)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. Friedel Crafts reaction, for example, adds an alkyl or acyl group to aromatic ethers when they react with an alkyl or acyl halide in the presence of a Lewis acid as a catalyst.Safety of 2,5-Dimethoxytetrahydrofuran

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

Product Details of 696-59-3In 2020 ,《Synthesis and characterization of some new pyridines, thieno[2,3-b] pyridines and pyrido[3′,2′:4,5]thieno[3,2-d]pyrimidine-4(3H)-ones bearing styryl moiety》 appeared in Journal of Heterocyclic Chemistry. The author of the article were Al-Waleedy, Safiyyah A. H.; Bakhite, Etify A.; Abbady, Mohamed S.; Abdu-Allah, Hajjaj H. M.. The article conveys some information:

Reaction of compound 3-cyano-5-ethoxycarbonyl-6-methyl-4-styrylpyridine-2(1H)-thione with some N-aryl-2-chloroacetamides, in the presence of sodium acetate, gave the corresponding 2-(N-arylcarbamoylmethylsulfanyl)-3-cyano-5-ethoxycarbonyl-6-methyl-4-styrylpyridines I [R1 = H, Me, NO2, etc.]. Reaction of compound 3-cyano-5-ethoxycarbonyl-6-methyl-4-styrylpyridine-2(1H)-thione with some N-aryl-2-chloroacetamides, in the presence of sodium acetate, gave the corresponding 2-(N-arylcarbamoylmethylsulfanyl)-3-cyano-5-ethoxycarbonyl-6-methyl-4-styrylpyridines I [R1 = H, Me, NO2, etc.]. When compounds I were subjected to Thorpe-Ziegler reaction conditions, they converted into the corresponding 3-amino-5-ethoxycarbonyl-2-(N-arylcarbamoyl)-6-methyl-4-styrylthieno[2,3-b]pyridines II [R2 = NH2]. Compounds II [R1 = H, Cl, NO2, R2 = NH2] were reacted, in turn, with 2,5-dimethoxytetrahydrofuran to furnish the corresponding 3-(pyrrol-1-yl)thieno-pyridines II [R2 = 1-pyrrolyl]. Reactions of II [R2 = NH2] with tri-Et orthoformate were also carried out to form 3-aryl-8-acetyl-7-methyl-9-styrylpyrido[3′,2′:4,5]thieno[3,2-d]pyrimidine-4(3H)-ones III [X = C]. Reactions of compounds II [R1 = OMe, Cl, R2 = NH2] with nitrous acid were also carried out to form 3-aryl-8-acetyl-7-methyl-9-styrylpyrido[3′,2′:4,5]thieno[3,2-d][1,2,3]triazine-4(3H)-ones III [X = N]. Structural formulas of all synthesized compounds I, II and III were characterized and confirmed on the basis of their elemental and spectral analyzes. The experimental part of the paper was very detailed, including the reaction process of 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Product Details of 696-59-3)

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Product Details of 696-59-3

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

Alqahtani, Yahya S.; Kumar, S. R. Prem; Pavitra, H.; Joshi, Shrinivas D. published an article in 2021. The article was titled 《Synthesis, computational docking, and antimycobacterial study of novel N’-phenyl-4-pyrrol-1-yl-benzenesulfonamide derivatives》, and you may find the article in Indian Journal of Heterocyclic Chemistry.Application In Synthesis of 2,5-Dimethoxytetrahydrofuran The information in the text is summarized as follows:

Fresh sequences of pyrrole linked N’-phenyl-4-pyrrolyl-benzenesulfonamide derivatives were synthesized by different synthetic methods. Synthesis of the N’-phenyl-4-(1H-pyrrol-1-yl) benzenesulfonamides/4-(2,5-dimethyl-1H-pyrrol-1-yl)-N’-phenylbenzenesulfonamides was achieved by refluxing 2,5-dimethoxytetrahydrofuran/hexane 2,5-dione sep. in presence of acetic acid. Further, synthesis of N-(4-(N’-phenylsulfamoyl)phenyl)-4-(1H-pyrrol-1-yl)benzamides/4-(2,5-dimethyl-1H-pyrrol-1-yl)-N-(4-(N’-phenylsulfamoyl)phenyl)benzamides was achieved by cold stirring of 4-(1H-pyrrol-1-yl)benzoic acid/4-(2,5-dimethyl-1H-pyrrol-1-yl)benzoic acid correspondingly in the presence of 2-(1H-benzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate, N’,N’-diisopropylethylamine, and DMF. In vitro anti-tubercular study of afresh compounds has shown good min. inhibitory concentration values (0.4-12.5μg/mL) counter to Mycobacterium tuberculosis H37Rv, while the corresponding study of reported mols. for antibacterial activity disclosed considerable inhibition values (0.4-25μg/mL) counter to Escherichia coli (Gram – ve) than Staphylococcus aureus (Gram + ve). In addition to this study using 2,5-Dimethoxytetrahydrofuran, there are many other studies that have used 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Application In Synthesis of 2,5-Dimethoxytetrahydrofuran) was used in this study.

2,5-Dimethoxytetrahydrofuran(cas: 696-59-3) is a member of ether. When aromatic ethers are exposed to halogen in the presence or absence of a catalyst, they undergo halogenation, such as bromination.Application In Synthesis of 2,5-Dimethoxytetrahydrofuran

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