Category: 700-16-3

Seaweed biomass derived bio solvents for the large scale production of few layered graphene nanosheets from graphite was written by Singh, Nripat;Sharma, Mukesh;Mondal, Dibyendu;Maru, Doli A.;Rathod, Meena R.;Sequeira, Rosy Alphons;Chudasama, Nishith A.;Prasad, Kamalesh. And the article was included in Materials Science for Energy Technologies in 2021.SDS of cas: 700-16-3 The following contents are mentioned in the article:

Large-scale production of graphene sheets by liquid-phase exfoliation of graphite is a challenging task from a sustainability point of view. Certain bio-derived solvents were found to exfoliate graphite to produce single-layered graphene sheets but the high cost of the solvent is always a deterring factor towards upscaling of the process. Herein, Kappaphycus alvarezii, a cultivable red seaweed is demonstrated as a sustainable resource for producing a bio solvent for exfoliation and to produce graphene sheets from graphite. A solvent system consisting of levulinic acid, acetic acid, and 纬-valerolactone was prepared from the polysaccharide obtained from the seaweed biomass through acid hydrolysis under pressure and the mixture was found to exfoliate graphite to produce few-layered pristine graphene nanosheets. The process is scalable and cost-effective and the seaweed biomass-derived solvent mixture can be recovered and reused in the subsequent cycles of exfoliation for large-scale production of graphene nanosheets. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3SDS of cas: 700-16-3).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. Pyridine has a conjugated system of six 蟺 electrons that are delocalized over the ring. The molecule is planar and, thus, follows the H眉ckel criteria for aromatic systems. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. SDS of cas: 700-16-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Access to a Variety of Ge(II) and Sn(II) Compounds through Substitution of Hypersilyl Moiety was written by Bisai, Milan Kumar;Ajithkumar, V. S.;Gonnade, Rajesh G.;Sen, Sakya S.. And the article was included in Organometallics in 2021.Application of 700-16-3 The following contents are mentioned in the article:

We have prepared amidinato-germylene (3) and -stannylene (4) with a tris(trimethylsilyl)silyl substituent and subsequently substituted the hypersilyl moiety by reacting 3 with chlorophosphines, which led to phosphino germylenes (5 and 6) with concomitant liberation of (Me₃Si)₃SiCl. Exploiting the fluoride affinity of the silicon atom, we have prepared tetrafluoro-4-pyridyl germylene (7) and -stannylene (8) by reacting 3 and 4 with C₅F₅N with simultaneous elimination of (Me₃Si)₃SiF. These are the first examples of aryl germylenes or stannylenes prepared via C-F bond activation of a perfluoroarene. The reaction of 4 with Me₃NO resulted in a novel Sn₂O₂ ring (9). All compounds were characterized by single-crystal X-ray structure determination studies. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Application of 700-16-3).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C鈥揌 in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Application of 700-16-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Computational mechanism investigation of Bi(I)/Bi(III) redox-catalyzed hydrodefluorination (HDF) of polyfluoroarenes was written by Jia, Feiyun;Luo, Jiewei;Zhang, Bo. And the article was included in New Journal of Chemistry in 2022.HPLC of Formula: 700-16-3 The following contents are mentioned in the article:

As an Earth-abundant and inexpensive main group element, the redox properties of bismuth are still under-explored. Here, we investigated a bismuth(I)-catalyzed hydrodefluorination reaction in detail using d. functional theory (DFT) methods. Calculations indicate that although reductive elimination has a moderate energy barrier (about 20.45 kcal mol-1), oxidative addition is crucial to this transformation, which correlates well with the main product yield. The excellent active bismuth catalyst does not effectively reduce the reductive elimination barrier, but promotes the reaction rate and yield by significantly lowering the oxidative addition barrier. Meanwhile, we also found that the metal bismuth is well coordinated with the nitrogen atoms of the N-C-N pincer ligand, delocalization of the 6p electron on bismuth to the benzene ring is weakened, and bismuth has a lower electropositivity, which will be more beneficial for oxidative addition, resulting in the stronger catalytic activity. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3HPLC of Formula: 700-16-3).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Pyridine derivatives are also useful as small-molecule 伪-helix mimetics that inhibit protein-protein interactions, as well as functionally selective GABA ligands.HPLC of Formula: 700-16-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Direct electrochemical hydrodefluorination of trifluoromethyl ketones enabled by non-protic conditions was written by Box, John R.;Atkins, Alexander P.;Lennox, Alastair J. J.. And the article was included in Chemical Science in 2021.HPLC of Formula: 700-16-3 The following contents are mentioned in the article:

CF₂H groups are unique due to the combination of their lipophilic and hydrogen bonding properties. The strength of H-bonding is determined by the group to which it is appended. Several functional groups have been explored in this context including O, S, SO and SO₂ to tune the intermol. interaction. Difluoromethyl ketones are under-studied in this context, without a broadly accessible method for their preparation Herein, authors describe the development of an electrochem. hydrodefluorination of readily accessible trifluoromethyl ketones. The single-step reaction at deeply reductive potentials is uniquely amenable to challenging electron-rich substrates and reductively sensitive functionality. Key to this success is the use of non-protic conditions enabled by an ammonium salt that serves as a reductively stable, masked proton source. Anal. of their H-bonding has revealed difluoromethyl ketones to be potentially highly useful dual H-bond donor/acceptor moieties. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3HPLC of Formula: 700-16-3).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of 鈭?8.7 脳 10鈭? cm3路mol鈭?.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ路mol鈭? in the liquid phase and 140.4 kJ路mol鈭? in the gas phase. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. HPLC of Formula: 700-16-3

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Fluorination Triggers Fluoroalkylation: Nucleophilic Perfluoro-tert-butylation with 1,1-Dibromo-2,2-bis(trifluoromethyl)ethylene (DBBF) and CsF was written by Wang, Qian;Tao, Quan;Dong, Hui;Ni, Chuanfa;Xie, Xiaoming;Hu, Jinbo. And the article was included in Angewandte Chemie, International Edition in 2021.Electric Literature of C5F5N The following contents are mentioned in the article:

Perfluoro-tert-butylation reaction has long remained a challenging task. We now report the use of 1,1-dibromo-2,2-bis(trifluoromethyl)ethylene (DBBF, I) as a practical reagent for perfluoro-tert-butylation reactions for the first time. Through a consecutive triple-fluorination process with DBBF and CsF, the (CF₃)₃C^– species can be liberated and observed, which is able to serve as a robust nucleophilic perfluoro-tert-butylating agent for various electrophiles. The power of this synthetic protocol is evidenced by the efficient synthesis of structurally diverse perfluoro-tert-butylated mols. Multiple applications demonstrate the practicability of this method, as well as the superiority of perfluoro-tert-butylated compounds as sensitive probes. The perfluoro-tert-butylated product was successfully applied in ¹H- and ¹⁹F-magnetic resonance imaging (MRI) experiment with an ultra-low field (ULF) MRI system. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Electric Literature of C5F5N).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. Pyridine has a conjugated system of six 蟺 electrons that are delocalized over the ring. The molecule is planar and, thus, follows the H眉ckel criteria for aromatic systems. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C鈥揌 in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Electric Literature of C5F5N

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Protic Ionic Liquids Can Be Both Free Proton Conductors and Benign Superacids was written by Ansari, Younes;Ueno, Kazuhide;Angell, C. Austen. And the article was included in Journal of Physical Chemistry B in 2021.Name: 2,3,4,5,6-Perfluoropyridine The following contents are mentioned in the article:

Superacids have been the source of much spectacular chem. but very little interesting physics despite the fact that the states of cations formed by transfer of the superacid proton to mol. bases can approach that of the cations in free space. Indeed, some of the very strongest acids, such as HPF₆ and HAlCl₄, have no independent existence due to lack of screening of the bare proton self-energy: their acidities can only be assessed by study of the conjugate bases. Here we show that, by allowing the protons of transient HAlCl₄ and HAlBr₄ to relocate on pentafluoropyridine, PFP (a very weak base that is stable to superacids), we can create glass forming protic ionic liquids (PILs) that are themselves superacids but, being free of superacid vapors, are of benign character. At T_g, conductivities exceed “good” ionic liquid values by 9 decades, so must be superprotonic. Anomalous Walden plots confirm superprotonicity. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Name: 2,3,4,5,6-Perfluoropyridine).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. The ring atoms in the pyridine molecule are sp2-hybridized. The nitrogen is involved in the 蟺-bonding aromatic system using its unhybridized p orbital. The lone pair is in an sp2 orbital, projecting outward from the ring in the same plane as the 蟽 bonds. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C鈥揌 in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Name: 2,3,4,5,6-Perfluoropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Thiophilic ring opening reactions of 3,3-bis(trifluoromethyl)-5-alkoxy-1,2-dithiolanes under action of nucleophiles was written by Petrov, Viacheslav. And the article was included in Journal of Fluorine Chemistry in 2018.Computed Properties of C5F5N The following contents are mentioned in the article:

The reaction of 3,3-bis(trifluoromethyl)-5-alkoxy-1,2-dithiolanes (RO = OEt or OBu-n) proceeds through thiophilic attack of BuLi leading to the formation of ring-opened product BuSCH(OR)CH₂C(CF₃)₂SLi, which can be converted into the corresponding thiols or sulfides by the reaction with H⁺ or alkyl halide. Interaction of 3,3-bis(trifluoromethyl)-5-n-butoxy-1,2-dithiolane with CF₃Si(CH₃)₃ resulted in unusual reaction leading to the formation of CF₃SCH(OBu)CH₂C(CF₃)=CF₂. The treatment of CF₃SCH(OBu)CH₂C(CF₃)=CF₂ with CsF in the presence pentafluoropyridine led to equimolar mixture of 2-n-butoxy-1,1-bis(trifluoromethyl)cyclopropane and 4-(trifluoromethylthio)tetrafluoropyridine (as a result of interception of liberated in this process CF₃CF₃S^–anion by pentafluoropyridine). This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Computed Properties of C5F5N).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. The pyridine ring occurs in many important compounds, including agrochemicals, pharmaceuticals, and vitamins. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Computed Properties of C5F5N

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Impact of fluorination and chlorination on the electronic structure, topology and in-plane ring normal modes of pyridines was written by Benassi, Enrico;Vaganova, Tamara;Malykhin, Evgenij;Fan, Haiyan. And the article was included in Physical Chemistry Chemical Physics in 2021.Safety of 2,3,4,5,6-Perfluoropyridine The following contents are mentioned in the article:

Seven partially and fully fluorinated/chlorinated pyridines were investigated by means of FT-IR and Raman spectroscopy combined with quantum chem. calculations, mainly aiming to detect how the nature and position of F and Cl substituents affect the in-plane ring normal modes (RNMs) of pyridines in terms of vibrational wavenumbers, force constants, IR intensities and Raman activities. Taking pyridine as the reference, the RNMs and some derived RNMs through coupling with related C-X (X = F, Cl) stretching vibrations were identified on the basis of their composition in terms of internal coordinates. The impact of fluorination and chlorination on these RNMs was also discussed from the perspective of frontier MOs , maps of the mol. electrostatic potential (MEP) and the mol. topol. Natural bond orbital (NBO) anal. revealed the consequences of substitutions on the intramol. charge delocalization and consequently the ring bond strength. Moreover, the effects of anharmonicity of the potential on vibrational frequencies were presented and discussed. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Safety of 2,3,4,5,6-Perfluoropyridine).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. Pyridine’s the lone pair does not contribute to the aromatic system but importantly influences the chemical properties of pyridine, as it easily supports bond formation via an electrophilic attack. Pyridine, its benzo and pyridine-based compounds play diverse roles in organic chemistry. Pyridine-based materials are valued for their optical and physical properties as well as their medical potential. Safety of 2,3,4,5,6-Perfluoropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

Perfluoropyridine as a Scaffold for Semifluorinated Thiol-ene Networks with Readily Tunable Thermal Properties was written by Moore, Levi M. J.;Greeson, Kevin T.;Stewart, Kevin A.;Kure, Daniel A.;Corley, Cynthia A.;Jennings, Abby R.;Iacono, Scott T.;Ghiassi, Kamran B.. And the article was included in Macromolecular Chemistry and Physics in 2020.Safety of 2,3,4,5,6-Perfluoropyridine The following contents are mentioned in the article:

Two new trifunctional alkene monomers based on the highly modular perfluoropyridine scaffold are synthesized with an aliphatic and an aromatic moiety, 4-penten-1-ol and eugenol, resp. The monomers are the basis for thiol-ene thermoset materials, formulated against a difunctional or trifunctional thiol. Systems based on these novel monomers have a wide range of thermal properties, with glass transition temperatures (T_gs) spanning from -42 to 21掳C. Mixed systems obey the Fox equation, and T_gs of the mixtures can be tuned to specific values in that range. Thermal degradation temperatures follow a similar trend, with decomposition temperatures ranging from 274 to 348掳C in nitrogen with varying compositions having tailorability therein. This new class of semifluorinated thermoset materials with tunable thermal properties has several potential applications within the aerospace industry, such as sealants and coatings, where stability and survivability at high temperatures in harsh environmental conditions are imperative. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Safety of 2,3,4,5,6-Perfluoropyridine).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. Pyridines are an important class of heterocycles and occur in polysubstituted forms in many naturally occurring biologically active compounds, drug molecules and chiral ligands. Many analogues of pyridine are known where N is replaced by other heteroatoms . Substitution of one C鈥揌 in pyridine with a second N gives rise to the diazine heterocycles (C4H4N2), with the names pyridazine, pyrimidine, and pyrazine.Safety of 2,3,4,5,6-Perfluoropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem

MOF-Stabilized Perfluorinated Palladium Cages Catalyze the Additive-Free Aerobic Oxidation of Aliphatic Alcohols to Acids was written by Greco, Rossella;Tiburcio-Fortes, Estefania;Fernandez, Antonio;Marini, Carlo;Vidal-Moya, Alejandro;Oliver-Meseguer, Judit;Armentano, Donatella;Pardo, Emilio;Ferrando-Soria, Jesus;Leyva-Perez, Antonio. And the article was included in Chemistry – A European Journal in 2022.Safety of 2,3,4,5,6-Perfluoropyridine The following contents are mentioned in the article:

Extremely high electrophilic metal complexes, composed by a metal cation and very electron poor 蟽-donor ancillary ligands, are expected to be privileged catalysts for oxidation reactions in organic chem. However, their low lifetime prevents any use in catalysis. Here the authors show the synthesis of fluorinated pyridine-Pd²⁺ coordinate cages within the channels of an anionic tridimensional metal-organic framework (MOF), and their use as efficient metal catalysts for the aerobic oxidation of aliphatic alcs. to carboxylic acids without any additive. Mechanistic studies strongly support that the MOF-stabilized coordination cage with perfluorinated ligands unleashes the full electrophilic potential of Pd²⁺ to dehydrogenate primary alcs., without any base, and also to activate O₂ for the radical oxidation to the aldehyde intermediate. This study opens the door to design catalytic perfluorinated complexes for challenging organic transformations, where an extremely high electrophilic metal site is required. This study involved multiple reactions and reactants, such as 2,3,4,5,6-Perfluoropyridine (cas: 700-16-3Safety of 2,3,4,5,6-Perfluoropyridine).

2,3,4,5,6-Perfluoropyridine (cas: 700-16-3) belongs to pyridine derivatives. Pyridine is diamagnetic and has a diamagnetic susceptibility of 鈭?8.7 脳 10鈭? cm3路mol鈭?.The molecular electric dipole moment is 2.2 debyes. The standard enthalpy of formation is 100.2 kJ路mol鈭? in the liquid phase and 140.4 kJ路mol鈭? in the gas phase. Reduced pyridines, namely tetrahydropyridines, dihydropyridines and piperidines, are found in numerous natural and synthetic compounds. The synthesis and reactivity of these compounds have often been driven by the fact many of these compounds have interesting and unique pharmacological properties. Safety of 2,3,4,5,6-Perfluoropyridine

Referemce:
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem