Category: 17351-61-0

Purohit, Shriram S. published the artcileSynthesis of novel oxazolidinedione derivatives by using different methods, Safety of Tetraethylammonium hydrogencarbonate, the publication is All Results Journal: Chem (2014), 5(1), 1-11, 12 pp., database is CAplus.

The synthesis of oxazolidine-2,4-diones using tetra-Et ammonium hydrogen carbonate (TEAHC) is reported. Synthesis by using TEAHC did not give proper results due to the requirement of extremely anhydrous conditions of all reactants, solvents and the reaction environment. Though all solvents and reactants used were rigorously dried, the results were not repetitive as mentioned in the previous literatures, specifically in-vacuo conditions. Oxalyl chloride is also used to synthesize oxazolidine-4,5-diones but even in extremely dry conditions of all reactants and the solvents, the prominent peaks were not observed in the final products.

All Results Journal: Chem published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, Safety of Tetraethylammonium hydrogencarbonate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Jeong, Cheonwoo published the artcileUse of tetraethylammonium bicarbonate as a precipitation agent on the preparation of coprecipitated Cu/ZnO catalysts, Name: Tetraethylammonium hydrogencarbonate, the publication is Applied Catalysis, A: General (2017), 35-41, database is CAplus.

Cu/ZnO catalysts were prepared by coprecipitation using tetraethylammonium bicarbonate (TEA⁺HCO₃^–), and their properties and methanol synthesis activities were compared to those of the catalysts prepared using Na⁺HCO₃^– usually employed for com. Cu/ZnO/(Al₂O₃) catalysts. When washed fully, TEA⁺– and Na⁺-based precursors showed typical zincian malachite (zM) without any other structures, and both catalysts obtained after calcination and H₂ reduction exhibited the similar specific copper surface area and, in turn, the similar methanol productivity. Since this result explains that TEA⁺ does not affect zM structure if Cu,Zn precipitate is fully washed, no washed and less washed TEA⁺– and Na⁺-based precursors were prepared It was interesting that all TEA⁺-based catalysts exhibited the similar methanol productivity irresp. of the washing efficiency whereas Na⁺-based catalyst containing more residual Na⁺ showed the smaller copper surface area and lower methanol productivity (i.e., linear correlation between the two parameters). This resulted from the inhibiting effect of Na⁺ on the degree of Cu²⁺ substitution by Zn²⁺ and the formation of high-temperature carbonate, consequently leading to a lower catalytic activity. These neg. effects of Na⁺ were absent or lessened when TEA⁺HCO₃^– was used as a precipitation agent, which is effective in preparing an active methanol synthesis catalyst.

Applied Catalysis, A: General published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, Name: Tetraethylammonium hydrogencarbonate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Mielby, Jerrik published the artcileEpoxidation of Alkenes with Aqueous Hydrogen Peroxide and Quaternary Ammonium Bicarbonate Catalysts, Quality Control of 17351-61-0, the publication is Catalysis Letters (2013), 143(11), 1162-1165, database is CAplus.

A range of solid and liquid catalysts containing bicarbonate anions were synthesized and tested for the epoxidation of alkenes with aqueous hydrogen peroxide. The combination of bicarbonate anions and quaternary ammonium cations opens up for new catalytic systems that can help to overcome challenges with catalyst separation and reuse.

Catalysis Letters published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, Quality Control of 17351-61-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Company, Anna published the artcileStructural and Kinetic Study of Reversible CO₂ Fixation by Dicopper Macrocyclic Complexes. From Intramolecular Binding to Self-Assembly of Molecular Boxes, SDS of cas: 17351-61-0, the publication is Inorganic Chemistry (2007), 46(22), 9098-9110, database is CAplus and MEDLINE.

A study of the reversible CO₂ fixation by macrocyclic dicopper complexes is described. The dicopper macrocyclic complexes [Cu₂(OH)₂(Me2p)](CF₃SO₃)₂, 1(CF₃SO₃)₂, and [Cu₂(¦Ì-OH)₂(Me2m)](CF₃SO₃)₂, 2(CF₃SO₃)₂, containing terminally bound and bridging hydroxide ligands, resp., and with macrocycle ligand I (Z = m-phenylene (Me₂m), p-phenylene (Me₂p)) promote reversible inter- and intramol. CO₂ fixation that gave the carbonate complexes [{Cu₂(Me2p)}₂(¦Ì-CO₃)₂](CF₃SO₃)₄, 4(CF₃SO₃)₄, and [Cu₂(¦Ì-CO₃)(Me2m)](CF₃SO₃)₂, 5(CF₃SO₃)₂. Under a N₂ atmosphere the complexes evolve CO₂ and revert to the starting hydroxo complexes 1(CF₃SO₃)₂ and 2(CF₃SO₃)₂, a reaction the rate of which linearly depends on [H₂O]. In the presence of H₂O, attempts to crystallize 5(CF₃SO₃)₂ afford [{Cu₂(Me2m)(H₂O)}₂(¦Ì-CO₃)₂](CF₃SO₃)₄, 6(CF₃SO₃)₄, which appears to rapidly convert to 5(CF₃SO₃)₂ in MeCN solution [Cu₂(OH)₂(H3m)]²⁺, 7, which contains a larger macrocyclic ligand II (H₃m), irreversibly reacts with atm. CO₂ to generate cage-like [{Cu₂(H3m)}₂(¦Ì-CO₃)₂](ClO₄)₄, 8(ClO₄)₄. However, addition of 1 equiv of HClO₄ per Cu generates [Cu₂(H3m)(MeCN)₄]⁴⁺ (3), and subsequent addition of Et₃N under air reassembles 8. The carbonate complexes 4(CF₃SO₃)₄, 5(CF₃SO₃)₂, 6(CF₃SO₃)₄, and 8(ClO₄)₄ were characterized in the solid state by x-ray crystallog. This anal. reveals that 4(CF₃SO₃)₄, 6(CF₃SO₃)₄, and 8(ClO₄)₄ consist of self-assembled mol. boxes containing two macrocyclic dicopper complexes, bridged by CO₃^2- ligands. The bridging mode of the carbonate ligand is anti-anti-¦Ì-¦Ç¹:¦Ç¹ in 4(CF₃SO₃)₄, anti-anti-¦Ì-¦Ç²:¦Ç¹ in 6(CF₃SO₃)₄ and anti-anti-¦Ì-¦Ç²:¦Ç² in 5(CF₃SO₃)₂ and 8(ClO₄)₄. Magnetic susceptibility measurements on 4(CF₃SO₃)₄, 6(CF₃SO₃)₄, and 8(ClO₄)₄ indicate that the carbonate ligands mediate antiferromagnetic coupling between each pair of bridged Cu^II ions (J = -23.1, -108.3, and -163.4 cm^-1, resp., H = -JS₁S₂). Detailed kinetic analyses of the reaction between CO₂ and the macrocyclic complexes 1(CF₃SO₃)₂ and 2(CF₃SO₃)₂ suggest that it is actually hydrogen carbonate formed in aqueous solution on dissolving CO₂ that is responsible for the observed formation of the different carbonate complexes controlled by the binding mode of the hydroxy ligands. CO₂ fixation can be used as an on/off switch for the reversible self-assembly of supramol. structures based on macrocyclic dicopper complexes.

Inorganic Chemistry published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, SDS of cas: 17351-61-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Ismail, Rehana published the artcileCationic imidazolium polymer monoliths for efficient solvent exchange, activation and fluorination on a continuous flow system, Application of Tetraethylammonium hydrogencarbonate, the publication is RSC Advances (2014), 4(48), 25348-25356, database is CAplus.

Polystyrene-imidazolium (PS-Im+Cl-) monolith was synthesized within a flow-through microfluidic chip and Teflon tubing for activating [¹⁸F]fluoride ions. The [¹⁸F]fluoride ions were trapped on the PS-Im+ monolith and were subsequently released with various phase-transfer catalysts (PTC) and carbonate or bicarbonate bases in microliter volumes of organic solvents containing 0.5% of water. The activated [¹⁸F]fluoride complex released from the PS-Im+ monolith was used to fluorinate various known PET probe precursors with diverse reactivity in a subsequent flow-through microfluidic chip without performing addnl. azeotropic distillation The fluorination yields under the optimized condition for the protected [¹⁸F]FDG, protected [¹⁸F]FLT, 4-[¹⁸F]fluoroethylbenzoate, and [¹⁸F]fallypride were 93%, 96%, 77% and 73%, resp. This method, utilizing the PS-Im+ monolith on a flow through microfluidic platform, enables the entire fluorine-18 radiochem. to be performed on a flow-through microfluidic device within a shorter synthesis time and with fluorination efficiency that is comparable to or higher than conventional means.

RSC Advances published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, Application of Tetraethylammonium hydrogencarbonate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Feroci, Marta published the artcileA simple and convenient method for preparation of sulfides, HPLC of Formula: 17351-61-0, the publication is Synthetic Communications (1999), 29(15), 2611-2615, database is CAplus.

Et₄N⁺ H carbonate (TEAHC) and Et₄N⁺ carbonate (TEAC) obtained resp. by chem. and electrochem. way, react with thiols in MeCN affording, after addition of a suitable alkylating reagent, the corresponding sulfides in high to excellent yields.

Synthetic Communications published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, HPLC of Formula: 17351-61-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Arcadi, Antonio published the artcileThe reaction of acetylenic amines with tetraethylammonium carbonate and hydrogen carbonate. Synthesis of 5-methylene-1,3-oxazolidin-2-ones, Recommanded Product: Tetraethylammonium hydrogencarbonate, the publication is Synlett (2005), 67-70, database is CAplus.

The reaction of acetylenic amines with electrochem. generated tetraethylammonium carbonate or chem. generated tetraethylammonium hydrogen carbonate is reported. Unsubstituted or substituted 5-methylene-1,3-oxazolidin-2-ones are obtained in moderate to very high yields according to the reaction conditions adopted and to the nature of the substrate.

Synlett published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, Recommanded Product: Tetraethylammonium hydrogencarbonate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Gale, Philip A. published the artcileAcyclic indole and carbazole-based sulfate receptors, SDS of cas: 17351-61-0, the publication is Chemical Science (2010), 1(2), 215-220, database is CAplus.

The anion complexation properties of acyclic receptors consisting of diindolylurea groups appended with amide, amidoindole or amidocarbazole groups have been studied. The receptors selectively bind and encapsulate sulfate via either 6 or 8 H bonds. Receptors containing 8 H bond donors perturb the pK_a of bound dihydrogen phosphate and bicarbonate to the extent that they are deprotonated by free anion in solution

Chemical Science published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, SDS of cas: 17351-61-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Jemielity, Jacek published the artcileNovel “anti-reverse” cap analogs with superior translational properties, HPLC of Formula: 17351-61-0, the publication is RNA (2003), 9(9), 1108-1122, database is CAplus and MEDLINE.

Synthetic analogs of the 5′-terminal caps of eukaryotic mRNAs and snRNAs are used in elucidating such physiol. processes as mRNA translation, pre-mRNA splicing, intracellular transport of mRNA and snRNAs, and mRNA turnover. Particularly useful are RNAs capped with synthetic analogs, which are produced by in vitro transcription of a DNA template using a bacteriophage RNA polymerase in the presence of ribonucleoside triphosphates and a cap dinucleotide such as m⁷Gp₃G. Unfortunately, because of the presence of a 3′-OH on both the m⁷Guo and Guo moieties, up to half of the mRNAs contain caps incorporated in the reverse orientation. Previously we designed and synthesized two “anti-reverse” cap analogs (ARCAs), m⁷3’dGp₃G and m₂^7,3′-OGp₃G, that cannot be incorporated in the reverse orientation because of modifications at the C3′ position of m⁷Guo. In the present study, we have synthesized seven new cap analogs modified in the C2′ and C3′ positions of m⁷Guo and in the number of phosphate residues, m₂^7,2′-OGp₃G, m⁷2’dGp₃G, m⁷2’dGp₄G, m₂^7,2′-OGp₄G, m₂^7,3′-OGp₄G, m⁷Gp₅G, and m₂^7,3′-OGp₅G. These were analyzed for conformation in solution, binding affinity to eIF4E, inhibition of in vitro translation, degree of reverse capping during in vitro transcription, capping efficiency, and the ability to stimulate cap-dependent translation in vitro when incorporated into mRNA. The results indicate that modifications at C2′, like those at C3′, prevent reverse incorporation, that tetra- and pentaphosphate cap analogs bind eIF4E and inhibit translation more strongly than their triphosphate counterparts, and that tetraphosphate ARCAs promote cap-dependent translation more effectively than previous cap analogs.

RNA published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C9H21NO3, HPLC of Formula: 17351-61-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Zlatopolskiy, Boris D. published the artcileDiscovery of ¹⁸F-JK-PSMA-7, a PET probe for the detection of small PSMA-positive lesions, Name: Tetraethylammonium hydrogencarbonate, the publication is Journal of Nuclear Medicine (2019), 60(6), 817-823, database is CAplus and MEDLINE.

The aim of this study was the development of highly selective and specific PSMA probes with enhanced imaging properties, in comparison with ¹⁸FDCFPyL, ¹⁸F-PSMA-1007, and ⁶⁸Ga-PSMA-11. Methods: Eight novel ¹⁸F-labeled PSMA ligands were prepared Their cellular uptake in PSMA-pos. LNCaP C4-2 and PSMA-neg. PC-3 cells was compared with that of ¹⁸F-DCFPyL. The most promising candidates were addnl. evaluated by small-animal PET in healthy rats using PSMA-pos. peripheral ganglia as a model for small PCa lesions. PET images of the ligand with the best outcome, ¹⁸F-JKPSMA- 7, were compared with those of ¹⁸F-DCFPyL, ¹⁸F-PSMA-1007, and ⁶⁸Ga-PSMA-11 with respect to key image-quality parameters for the time frame 60-120 min. Results: Compared with ¹⁸F-DCFPyL, ¹⁸FJK- PSMA-7 demonstrated increased PSMA-specific cellular uptake. Although target-to-background ratios of ¹⁸F-DCFPyL and ¹⁸F-PSMA- 1007 were comparable, this parameter was higher for ¹⁸F-JK-PSMA- 7 and lower for ⁶⁸Ga-PSMA-11. Image acutance was significantly higher for ¹⁸F-JK-PSMA-7 and ¹⁸F-PSMA-1007 than for ¹⁸F-DCFPyL and ⁶⁸Ga-PSMA-11. Conclusion: ¹⁸F-JK-PSMA-7 is a promising candidate for high-quality visualization of small PSMApos. lesions.

Journal of Nuclear Medicine published new progress about 17351-61-0. 17351-61-0 belongs to catalysis-chemistry, auxiliary class Phase Transfer Catalyst, name is Tetraethylammonium hydrogencarbonate, and the molecular formula is C14H12O2, Name: Tetraethylammonium hydrogencarbonate.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia