Category: 2645-22-9

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 4,4-Dipyridyl Disulfide(SMILESS: C1(SSC2=CC=NC=C2)=CC=NC=C1,cas:2645-22-9) is researched.HPLC of Formula: 435294-03-4. The article 《A novel HPLC-MS/MS approach for the identification of biological thiols in vegetables》 in relation to this compound, is published in Food Chemistry. Let’s take a look at the latest research on this compound (cas:2645-22-9).

Thiols are important natural mols. with diverse functions, ranging from acting as antioxidants that prevent chronic diseases to contributing aromas to foods and beverages. Biol. thiols such as glutathione are of particular interest due to their functional roles, which include helping maintain cellular redox homeostasis and detoxifying reactive oxygen species. However, knowledge of thiol metabolism in plants is limited to studying known compounds, whereas other important thiol-containing metabolites could also exist. This work aimed to develop a new anal. approach for screening of thiols in plants, using four vegetal examples and beginning with HPLC-MS/MS in precursor ion scan mode, after extraction and thiol-specific derivatisation with 4,4-dithiodipyridine (DTDP). Compound identity for prospective thiols was then proposed using HPLC with high resolution MS, and verified with authentic standards This approach could lead to prospecting studies that identify thiols with potential roles in metabolic pathways, nutritional value of vegetables, or flavouring of foods.

《A novel HPLC-MS/MS approach for the identification of biological thiols in vegetables》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(4,4-Dipyridyl Disulfide)Formula: C10H8N2S2.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: 2645-22-9. 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: 4,4-Dipyridyl Disulfide, is researched, Molecular C10H8N2S2, CAS is 2645-22-9, about Copper-Catalyzed Cycloaddition of Heterobicyclic Alkenes with Diaryl Disulfides to Synthesize Dihydrobenzo[b]thiophene Derivatives.

A novel copper-catalyzed cycloaddition of diaryl disulfides RSSR (R = Ph, naphthalen-1-yl, pyridin-4-yl, etc.) to heterobicyclic alkenes I [R1 = H, F, Me, OMe; R2 = H, F, OMe; R3 = H, Me, C(O)OMe; R4 = H, Me, C(O)OMe; X = O, CH2, NTs, NBoc] has been developed. The C-S and C-C bonds can be formed simultaneously on the C=C bond of the olefins via a single-step cycloaddition to afford a series of 2,3-dihydrobenzo[b]thiophene derivatives II [R5 = H, F, OMe; R6 = H, OMe, Cl; R5R6 = -CH=CH-CH=CH-; R7 = H, F, Me, Ph, etc.; R8 = H, OMe, Cl; R7R8= -CH=CH-CH=CH-] and III. This reaction exhibits excellent diastereoselectivity and relatively broad substrate scope. Various functional groups attached to the substrates are tolerated in this protocol to give the corresponding exo adducts II and III in moderate yields.

《Copper-Catalyzed Cycloaddition of Heterobicyclic Alkenes with Diaryl Disulfides to Synthesize Dihydrobenzo[b]thiophene Derivatives》 provides a strategy for the preparation of materials with excellent comprehensive properties, which is conducive to broaden the application field of this compound(4,4-Dipyridyl Disulfide)Recommanded Product: 2645-22-9.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

The reaction of an aromatic heterocycle with a proton is called a protonation. One of articles about this theory is 《Squeezing out the catalysts: the disulphide bond exchange in aryl disulphides at high hydrostatic pressure》. Authors are Sobczak, Szymon; Ratajczyk, Paulina; Katrusiak, Andrzej.The article about the compound:4,4-Dipyridyl Disulfidecas:2645-22-9,SMILESS:C1(SSC2=CC=NC=C2)=CC=NC=C1).Product Details of 2645-22-9. Through the article, more information about this compound (cas:2645-22-9) is conveyed.

Exchange of the disulfide bond is a prominent example of equilibrium reactions. Therefore, the wide library of disulfide exchange reactions requires the application of catalysts, such as reducing agents, strong bases, UV light, or ultrasounds to stimulate higher conversion yields. The recent observation of pressure-induced exchange of aryl disulfides in the absence of catalysts or other stimuli prompted our study on the mechanism explaining the effect of high pressure on the reaction equilibrium We employed the pressure between 100 and 400 MPa, for promoting the exchange reactions between various homodimeric aryl disulfides and for optimized conditions obtained 100% yields in pure single-crystal form of the heterodimer. The reactions were performed in a diamond-anvil cell, as well as in a hydraulic piston-and-cylinder press, and the products were characterized by X-ray diffraction, mass and NMR spectroscopy. The prominent role of high-entropy states, not attainable at ambient conditions, as well as the high-entropy nucleation, kinetic crystallization and other effects associated with the high-pressure environment, is apparent. This entropy-driven reactions are an efficient, environmentally-friendly, one-pot method for obtaining pure crystalline heterodimeric disulfides.

Different reactions of this compound(4,4-Dipyridyl Disulfide)Product Details of 2645-22-9 require different conditions, so the reaction conditions are very important.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Majee, Prakash; Singha, Debal Kanti; Daga, Pooja; Hui, Sayani; Mahata, Partha; Mondal, Sudip Kumar published the article 《Photophysical studies of a room temperature phosphorescent Cd(II) based MOF and its application towards ratiometric detection of Hg2+ ions in water》. Keywords: mercury ion ratiometric detection water photophys study.They researched the compound: 4,4-Dipyridyl Disulfide( cas:2645-22-9 ).Safety of 4,4-Dipyridyl Disulfide. 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:2645-22-9) here.

A new cadmium based MOF [Cd(C5N1S1H4)(C6O5H3)] (C5N1S1H4 = 4MPy, C6O5H3 = HFDA), Cd_1, was synthesized by a solvothermal reaction using 2,5-furandicarboxylic acid (H2FDA) and 4-mercaptopyridine (4MPyH) formed in situ by the S-S bond rupture of the aldrithiol-4 ligand. Single crystal X-ray data of Cd_1 confirmed a two-dimensional structure arranged in an ABAB… fashion in three dimensions where the nitrogen atom of the pyridine ring of 4MPy remains free. The aqueous dispersion of Cd_1 showed room temperature phosphorescence at 520 nm upon excitation at 330 nm. Luminescence lifetime studies revealed that the emission at 520 nm originates from a triplet state which became populated through intersystem crossing (ISC) from the singlet excited state. A trace amount of Hg2+ ions interacted very strongly with Cd_1 and significantly altered its UV-vis absorption and luminescence spectra. After interacting with the Hg2+ ions, the emission of Cd_1 at 520 nm gradually disappeared with a concomitant increase of the low intensity fluorescence at 383 nm. The ISC is hampered by the coordination of Hg2+ ions with two S atoms of the 4MPy moiety of two adjacent 1D chains (inter-layer) and a huge reduction of the structure’s flexibility. On the other hand, the interactions between metal ions and Cd_1 via the free N atom of the pyridine moiety resulted in the increase of the fluorescence intensity at 383 nm, however the phosphorescence intensity did not change significantly. These studies indicate that the interactions between Hg2+ ions and S atoms are highly selective due to the soft-soft interaction whereas the interactions between the N atoms and all the metal ions are not selective. A ratiometric luminescence approach has been employed to establish Cd_1 as a detector of Hg2+ in aqueous medium selectively over other common metal ions. The estimated quenching constant and detection limit of Cd_1 for Hg2+ were found to be 1.15 x 106 M-1 and 37.5 nM (equivalent to 7.40 ppb) in water.

Different reactions of this compound(4,4-Dipyridyl Disulfide)Safety of 4,4-Dipyridyl Disulfide require different conditions, so the reaction conditions are very important.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Recommanded Product: 2645-22-9. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 4,4-Dipyridyl Disulfide, is researched, Molecular C10H8N2S2, CAS is 2645-22-9, about Response of a Zn(II)-based metal-organic coordination polymer towards trivalent metal ions (Al3+, Fe3+ and Cr3+) probed by spectroscopic methods. Author is Daga, Pooja; Manna, Priyanka; Majee, Prakash; Singha, Debal Kanti; Hui, Sayani; Ghosh, Ananta Kumar; Mahata, Partha; Mondal, Sudip Kumar.

A new zinc-based two-dimensional coordination polymer, [Zn(5-AIP)(Ald-4)]·H2O (5-AIP = 5-amino isophthalate, Ald-4 = aldrithiol-4), 1 , was synthesized at room temperature by the layer diffusion technique. Single-crystal X-ray diffraction anal. of 1 showed a two-dimensional bilayer structure. An aqueous suspension of 1 upon excitation at 300 nm displayed an intense blue emission at 403 nm. The luminescence spectra were interestingly responsive and selective to Al3+, Cr3+ and Fe3+ ions even in the presence of other interfering ions. The calculated detection limits for Al3+, Cr3+ and Fe3+ were 0.35μM (≡8.43 ppb), 0.46μM (≡22.6 ppb) and 0.30μM (≡15.85 ppb), resp. Notably, with the cumulative addition of Al3+ ions, the luminescence intensity at 403 nm decreased steadily with a gradual red shift up to 427 nm. Afterward, this red shifted peak showed a turn-on effect upon further addition of Al3+ ions. However, for Cr3+ and Fe3+ ions, there was only drastic luminescence quenching and a large red shift up to 434 nm. This indicated the formation of a complex between 1 and these metal ions, which was also supported by the UV-Visible absorption spectra of 1 that showed the appearance of a new band at 280 nm in the presence of these three metal ions. The FTIR spectra revealed that these ions interacted with the carboxylate oxygen atom of 5-AIP and the nitrogen atom of the Ald-4 ligand in the structure. The luminescence lifetime decay anal. manifested that a charge-transfer type complex was formed between 1 and Cr3+ and Fe3+ ions that resulted in huge luminescence quenching due to the efficient charge transfer involving the vacant d-orbitals, whereas for Al3+ ions having no vacant d-orbital, turn-on of luminescence occurred because of the increased rigidity of 1 upon complexation.

The article 《Response of a Zn(II)-based metal-organic coordination polymer towards trivalent metal ions (Al3+, Fe3+ and Cr3+) probed by spectroscopic methods》 also mentions many details about this compound(2645-22-9)Recommanded Product: 2645-22-9, you can pay attention to it or contacet with the author([email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]; [email protected]) to get more information.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Application In Synthesis of 4,4-Dipyridyl Disulfide. Aromatic heterocyclic compounds can also be classified according to the number of heteroatoms contained in the heterocycle: single heteroatom, two heteroatoms, three heteroatoms and four heteroatoms. Compound: 4,4-Dipyridyl Disulfide, is researched, Molecular C10H8N2S2, CAS is 2645-22-9, about Ionic cocrystals of dithiobispyridines: the role of I···I halogen bonds in the building of iodine frameworks and the stabilization of crystal structures. Author is Wzgarda-Raj, Kinga; Nawrot, Martyna; Rybarczyk-Pirek, Agnieszka J.; Palusiak, Marcin.

It has been confirmed that mercaptopyridines undergo spontaneous condensation in redox reaction with iodine-forming dithiopyridines. In the solid state, these compounds are protonated at the N atoms and cocrystallize with iodine forming salt structures, namely, 2-[(pyridin-2-yl)disulfanyl]pyridinium triiodide sesquiiodine, C10H9N2S2+·I3-·1.5I2, and 4,4′-(disulfanediyl)dipyridinium pentaiodide triiodide, C10H10N2S22+·I5-·I3-. Dithiopyridine cations are packed among three-dimensional frameworks built from iodide anions and neutral iodine mols., and are linked by hydrogen, halogen and chalcogen interactions. Quantum chem. computations indicated that dithiopyridines exhibit anomalously high nitrogen basicity which qualify them as potential proton sponges.

The article 《Ionic cocrystals of dithiobispyridines: the role of I···I halogen bonds in the building of iodine frameworks and the stabilization of crystal structures》 also mentions many details about this compound(2645-22-9)Application In Synthesis of 4,4-Dipyridyl Disulfide, you can pay attention to it, because details determine success or failure

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of 4,4-Dipyridyl Disulfide. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 4,4-Dipyridyl Disulfide, is researched, Molecular C10H8N2S2, CAS is 2645-22-9, about Metal-free, oxidative decarboxylation of aryldifluoroacetic acid with the formation of the ArS-CF2 bond. Author is Zhang, Yifang; Wang, Qian; Peng, Yi; Gong, Haiying; Chen, Hua; Deng, Hongmei; Hao, Jian; Wan, Wen.

A metal-free, oxidative decarboxylative reaction of aryldifluoroacetic acids ArCF2C(O)OH (Ar = 4-methoxylphenyl, 2,4,6-trifluoromethylphenyl, 1-naphthyl, etc.) with diaryl disulfides RSSR (R = Ph, thiophen-2-yl, benzo[d]thiazol-2-yl, etc.) or thiols R1SH (R1 = 4-methylphenyl, thiophen-2-yl, pyridin-2-yl, etc.) under mild reaction conditions has been developed. This is an efficient and straightforward radical cross-coupling method for the synthesis of diverse aryldifluoromethylthio ethers ArCF2SR or ArCF2SR1 in moderate to excellent yields.

After consulting a lot of data, we found that this compound(2645-22-9)Quality Control of 4,4-Dipyridyl Disulfide can be used in many types of reactions. And in most cases, this compound has more advantages.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 4,4-Dipyridyl Disulfide(SMILESS: C1(SSC2=CC=NC=C2)=CC=NC=C1,cas:2645-22-9) is researched.Computed Properties of C6H12N2O4Pt. The article 《Iron-Catalyzed Thiolation and Selenylation of Cycloalkyl Hydroperoxides via C-C Bond Cleavage》 in relation to this compound, is published in Journal of Organic Chemistry. Let’s take a look at the latest research on this compound (cas:2645-22-9).

A cheap iron-catalyzed C-C bond cleavage and thiolation/selenylation of cycloalkyl hydroperoxides I [R = Ph, 2-thienyl, 2-naphthyl, etc.; R1 = H, Me, n-heptyl; X = (CH2)n; n = 1-4, 8] are presented. This redox-neutral protocol provides efficient access to diverse distal keto-functionalized thioethers and selenium compounds II (R = n-pentyl, Ph, 2-thienyl, etc.; R1 = H, Me, n-heptyl; Ar = Ph, 4-MeC6H4, 2-pyridyl, etc.; X = (CH2)n; n = 1-4, 8; Y = S, Se). Remarkably, only some amounts of disulfides are required for this transformation.

After consulting a lot of data, we found that this compound(2645-22-9)Application In Synthesis of 4,4-Dipyridyl Disulfide can be used in many types of reactions. And in most cases, this compound has more advantages.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary

Quality Control of 4,4-Dipyridyl Disulfide. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: 4,4-Dipyridyl Disulfide, is researched, Molecular C10H8N2S2, CAS is 2645-22-9, about A Single-Crystal to Single-Crystal Conversion Scheme for a Two-Dimensional Metal-Organic Framework Bearing Linear Cd3 Secondary Building Units. Author is Chao, Meng-Yao; Chen, Jing; Hao, Zhi-Min; Tang, Xiao-Yan; Ding, Lifeng; Zhang, Wen-Hua; Young, David J.; Lang, Jian-Ping.

The single-crystal to single-crystal (SCSC) conversion of metal-organic frameworks (MOFs) represents a facile route to new MOFs with structures and functionalities that are challenging to obtain by direct synthesis. However, conversion products are often structurally limited for a given precursor. The authors herein report that a two-dimensional (2D) MOF featuring a linear Cd3 cluster secondary building unit (SBU) converts into one type of three-dimensional (3D) interpenetrated and two types of 3-dimensional noninterpenetrated MOFs upon reaction with dipyridyl ligands. One of the interpenetrated 3-dimensional MOFs, in turn, undergoes either ligand substitution to give isoreticular interpenetrated MOFs, or ligand addition to give a self-penetrated 3-dimensional MOF. This rich SCSC conversion library is made possible by the inclined nature of the Cd3 SBU with respect to the 2-dimensional plane of the starting material to create an anisotropic environment around the SBU.

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Reference:
Bromide – Wikipedia,
bromide – Wiktionary

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 4,4-Dipyridyl Disulfide, is researched, Molecular C10H8N2S2, CAS is 2645-22-9, about The New Salicylaldehyde S,S-Propanedithioacetal Ester Enables N-to-C Sequential Native Chemical Ligation and Ser/Thr Ligation for Chemical Protein Synthesis, the main research direction is protein synthesis salcylaldehyde propanedithioacetal native chem ligation serine threonine; salcylaldehyde propanedithioacetal SPPS microwave NSL STL oxidation desulfurization; solid phase peptide synthesis reductive amination palmitoylation cyclization thiolysis; palmitoylated matrix ion channel influenza virus protein folding helix; interferon induced transmembrane protein palmitoylated synthesis.Application In Synthesis of 4,4-Dipyridyl Disulfide.

The combination of distinct peptide ligation techniques to facilitate chem. protein synthesis represents one of the long-standing goals in the field. A new combination ligation method of N-to-C sequential native chem. ligation and Ser/Thr ligation (NCL-STL) is described for the first time. This method relies on the peptide salcylaldehyde S,S-propanedithioacetal (SALPDT)-ester prepared by a new 1,3-propanedithiol-mediated reaction. The peptide SALPDT-ester, which is compatible with NCL, can be fully activated by N-chlorosuccinimide (NCS)/AgNO3 in aqueous solution to afford peptide SAL-ester for use in the subsequent STL. The practicality of the combined NCL-STL method is illustrated by the synthesis of S-palmitoylated matrix-2 ion channel from influenza A virus and S-palmitoylated interferon-induced transmembrane protein 3. This approach expands the multiple-segments peptide ligation toolkit for producing important and complex custom-made protein samples by chem. protein synthesis.

In some applications, this compound(2645-22-9)Application In Synthesis of 4,4-Dipyridyl Disulfide is unique.If you want to know more details about this compound, you can contact with the author or consult more relevant literature.

Reference:
Bromide – Wikipedia,
bromide – Wiktionary