Day: October 13, 2022

Application of 696-59-3In 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: 696-59-3Application 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.Application of 696-59-3

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

Quality Control of 2,5-DimethoxytetrahydrofuranIn 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: 696-59-3Quality Control of 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.Quality Control of 2,5-Dimethoxytetrahydrofuran

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

Recommanded Product: 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: 696-59-3Recommanded Product: 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.Recommanded Product: 696-59-3

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

Category: tetrahydrofuransOn 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: 19444-84-9Category: tetrahydrofurans) 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.Category: tetrahydrofurans

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

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》.Name: 2,5-Dimethoxytetrahydrofuran 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: 696-59-3Name: 2,5-Dimethoxytetrahydrofuran) 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.Name: 2,5-Dimethoxytetrahydrofuran

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

Reference of 2,5-DimethoxytetrahydrofuranIn 2020 ,《Towards the template synthesis of conjugated pyrrole based oligo-heteroaryls》 was published in Journal of the Indian Chemical Society. The article was written by Panda, Biswajit. The article contains the following contents:

Synthesis of polymers and Oligomers with various interesting phys. properties is a rewarding task for the chemist. oligoheteroaryls are a significant class of organic compounds due to their wide applicability in various fields. Here, in this article, the synthetic studies directed for the preparation of conjugated pyrrole based oligo-heteroaryls was reported. The successful synthesis of double stranded polymeric ladderphane using ring opening metathesis polymerizations (ROMP) and palladium catalyzed Suzuki coupling were the key feature of this work. Hydrolysis of the double stranded polymer was unsuccessful due to its insoluble nature. The effort to increase the solubility of the double stranded polymers by the incorporation of long-chain aliphatic counterpart is underway in our laboratory In the part of experimental materials, we found many familiar compounds, such as 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Reference of 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.Reference of 2,5-Dimethoxytetrahydrofuran

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

Computed Properties of C4H6O3On June 1, 2022, Wurzler, Gleicielle Tozzi; da Silva, Victor Teixeira; de Almeida Azevedo, Debora; Ana da Silva, Ayla Sant’; Noronha, Fabio Bellot published an article in Fuel Processing Technology. The article was 《Integrating bio-oil and carbohydrate valorization on the fractionation of sugarcane bagasse via Organosolv process using Mo2C-based catalysts》. The article mentions the following:

This work studied the fractionation of sugarcane bagasse via Organosolv treatment using isopropanol/water in the presence of Raney-Ni and molybdenum carbide catalysts (Bulk Mo2C and Mo2C supported on activated carbon (AC) or Al2O3). The degree of delignification, the bio-oil and solid residue composition depended on the type of catalyst. A partial extraction of hemicellulose occurred followed by depolymerization, resulting in a product distribution that depended on the catalyst. Raney-Ni catalyst promoted the formation of diols and triols, while xylose, furfural, and furan were mainly produced by Mo2C based-catalysts. The Organosolv treatment without catalyst and in the presence of bulk Mo2C produced a bio-oil containing mainly 2,3-dihydrobenzofuran. Mo2C/AC and Mo2C/Al2O3 are promising catalysts for the fractionation of sugarcane bagasse that produced a bio-oil with higher yield to substituted methoxyphenols and a solid residue more easily hydrolyzed by cellulases, producing higher yield to glucose than Raney-Ni catalyst. In the experiment, the researchers used 3-Hydroxydihydrofuran-2(3H)-one(cas: 19444-84-9Computed Properties of C4H6O3)

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.Computed Properties of C4H6O3

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

《Formal enantioselective total synthesis of bisdehydroneostemoninine》 was published in Journal of Asian Natural Products Research in 2020. These research results belong to Ma, Kai-Qing; Ren, Hu-Bin; Chao, Jian-Bin; Qin, Xue-Mei. Quality Control of 2,5-Dimethoxytetrahydrofuran The article mentions the following:

A formal enantioselective total synthesis of bisdehydroneostemoninine I employing L-glutamic acid as the chiral pool is described. The key features of the synthesis include regioselective and enantioselective opening of the chiral epoxide, (2R)-2-[3-[[(1,1-dimethylethyl)dimethylsilyl]oxy]propyl]oxirane with dimethylsulfonium methylide and tandem Friedel-Crafts cyclization followed by lactonization to form a 5-7-5 tricyclic core of the target stemona alkaloids I. The synthetic route provides opportunities to explore the biol. behavior of enantiopure compound I.2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Quality Control of 2,5-Dimethoxytetrahydrofuran) 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.Quality Control of 2,5-Dimethoxytetrahydrofuran

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

In 2022,EL-Mahdy, Ahmed F. M.; Bakhite, Etify A.; Abdel-Hafez, Shams H.; Ibrahim, Omaima F.; Abdu-Allah, Hajjaj H. M.; Marae, Islam S. published an article in Journal of Heterocyclic Chemistry. The title of the article was 《Synthesis, characterization, and photophysical properties of some new thieno[2,3-b]pyridines bearing phenylethenyl moiety》.Reference of 2,5-Dimethoxytetrahydrofuran The author mentioned the following in the article:

The 5-acetyl-3-cyano-6-methyl-4-(2-phenylethenyl)pyridine-2(1H)-thione was synthesized by interaction of cinnamylidene-2-cyanothioacetamide and acetylacetone or via one-pot reaction of E-cinnamaldehyde, 2-cyanothioacetamide, and acetylacetone. Reaction of 5-acetyl-3-cyano-6-methyl-4-(2-phenylethenyl)pyridine-2(1H)-thione with Et iodide or N-chloroacetyl derivative of aromatic amines RC6H4NHC(O)CH2Cl (R = Me, OMe, acetyl, Cl) in boiling ethanol containing sodium ethoxide gave the 5-acetyl-3-cyano-2-ethylsulfanyl-6-methyl-4-(2-phenylethenyl)pyridine and 5-acetyl-3-amino-2-(N-arylcarbamoyl)-6-methyl-4-(2-phenylethenyl)thieno[2,3-b]pyridines I, resp. Compound I (R = Cl) was reacted with 2,5-dimethoxytetrahydrofuran or tri-Et orthoformate to furnish 5-acetyl-2-[N-(4-chlorophenyl)carbamoyl]-6-methyl-4-(2-phenylethenyl)-3-(1H-pyrrol-1-yl)- thieno[2,3-b]pyridine or 8-acetyl-3-(4-chlorophenyl)-7-methyl-9-(2-phenylethenyl)pyrido [3′,2′:4,5]thieno[3,2-d]pyrimidine-4(3H)-one, resp. The photophys. properties of I (Me, OMe, Cl), and 8-acetyl-3-(4-chlorophenyl)-7-methyl-9-(2-phenylethenyl)pyrido [3′,2′:4,5]thieno[3,2-d]pyrimidine-4(3H)-one were fully studied and the obtained results included herein. The fluorescence data confirmed that compounds I (Me, OMe, Cl), and 8-acetyl-3-(4-chlorophenyl)-7-methyl-9-(2-phenylethenyl)pyrido [3′,2′:4,5]thieno[3,2-d]pyrimidine-4(3H)-one exhibit aggregation-induced emission behavior with high absolute quantum yields. In the experimental materials used by the author, we found 2,5-Dimethoxytetrahydrofuran(cas: 696-59-3Reference 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.Reference of 2,5-Dimethoxytetrahydrofuran

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

《Discovery of Potent and Selective Inhibitors of Ataxia Telangiectasia Mutated and Rad3 Related (ATR) Protein Kinase as Potential Anticancer Agents》 was written by Charrier, Jean-Damien; Durrant, Steven J.; Golec, Julian M. C.; Kay, David P.; Knegtel, Ronald M. A.; MacCormick, Somhairle; Mortimore, Michael; O’Donnell, Michael E.; Pinder, Joanne L.; Reaper, Philip M.; Rutherford, Alistair P.; Wang, Paul S. H.; Young, Stephen C.; Pollard, John R.. Reference of (S)-3-Iodotetrahydrofuran And the article was included in Journal of Medicinal Chemistry on April 14 ,2011. The article conveys some information:

DNA-damaging agents are among the most frequently used anticancer drugs. However, they provide only modest benefit in most cancers. This may be attributed to a genome maintenance network, the DNA damage response (DDR), that recognizes and repairs damaged DNA. ATR is a major regulator of the DDR and an attractive anticancer target. Herein, we describe the discovery of a series of aminopyrazines with potent and selective ATR inhibition. Compound (I) inhibits ATR with a Ki of 6 nM, shows >600-fold selectivity over related kinases ATM or DNA-PK, and blocks ATR signaling in cells with an IC50 of 0.42 μM. Using I, here it is shown that ATR inhibition markedly enhances death induced by DNA-damaging agents in certain cancers but not normal cells. This differential response between cancer and normal cells highlights the great potential for ATR inhibition as a novel mechanism to dramatically increase the efficacy of many established drugs and ionizing radiation. In the experimental materials used by the author, we found (S)-3-Iodotetrahydrofuran(cas: 918439-76-6Reference of (S)-3-Iodotetrahydrofuran)

(S)-3-Iodotetrahydrofuran(cas: 918439-76-6) is one of organic iodides. The carbon-iodine bond is weaker than other carbon-halogen bonds due to the poor electronegative nature of the iodine atom. In general, organic iodides are light-sensitive and turn yellow during storage, owing to the formation of iodine. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles.Reference of (S)-3-Iodotetrahydrofuran

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