Author: tianli

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: Dichloro(1,5-cyclooctadiene)platinum(II)( cas:12080-32-9 ) is researched.COA of Formula: C8H12Cl2Pt.Stipurin, Sergej; Strassner, Thomas published the article 《Phosphorescent Cyclometalated Platinum(II) Imidazolinylidene Complexes》 about this compound( cas:12080-32-9 ) in European Journal of Inorganic Chemistry. Keywords: phosphorescent cyclometalated platinum imidazolinylidene diketonate complex DFT uv vis; crystal structure mol cyclometalated platinum imidazolinylidene diketonate complex optimized; cyclometalated platinum imidazolinylidene diketonate complex preparation electrochem thermal decomposition. Let’s learn more about this compound (cas:12080-32-9).

We present the synthesis and characterization of six novel bidentate C-C* cyclometalated platinum(II) complexes derived from saturated N-heterocyclic carbene precursors, namely 1-aryl-3-methyl-1H-4,5-dihydroimidazolium salts. The title compounds were then synthesized by a multi-step reaction, which includes an in situ generation of the silver carbene complex, followed by transmetalation to platinum and subsequent introduction of the β-diketonate ligand. Structural characterization by NMR experiments and solid-state structures prove the cyclometalation and the saturated backbone of the NHC motif. Photophys. and electrochem. properties of the platinum(II) complexes were examined and studied in detail by DFT calculations The title compounds are strongly emissive at room temperature in the sky-blue region of the visible spectrum and show quantum yields of up to 71% in a PMMA matrix.

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Application of 1195-58-0. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Pyridine-3,5-dicarbonitrile, is researched, Molecular C7H3N3, CAS is 1195-58-0, about Additivity of substituent effects on the proton affinity and gas-phase basicity of pyridines. Author is Ebrahimi, A.; Habibi-Khorasani, S. M.; Jahantab, M..

The change in the proton affinity (PA) and basicity (GB) of pyridine with substituents have been considered by quantum mech. methods at the B3LYP/6-311++G(d,p) level of theory. The PA and GB values increase by the electron-donating substituents and decrease by the electron-withdrawing substituents. The effects of substituents on the PA and GB are approx. additive. The deviations of changes that are predicted from the additivity of substituent effects are generally lower than 30% from the calculated changes. Linear relationships are observed between the calculated PA values of substituted pyridines and the topol. properties of electron d., the mol. electrostatic potentials (MEP), and the N-H bond lengths. In addition, well-defined relations are established between the calculated PA values and the Hammett constants, and the reaction constant (ρ) has been calculated for the protonation reaction. With some exceptions, the effect of substituents are also additive on the electron d. and its Laplacian calculated at N-H BCP, and the MEP values calculated around the N atom.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: Dichloro(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12Cl2Pt, CAS is 12080-32-9, about Phosphorylation of 1,4:3,6-Dianhydro-D-sorbitol.Name: Dichloro(1,5-cyclooctadiene)platinum(II).

Regioselective mono- and diphosphorylation of 1,4:3,6-dianhydro-D-sorbitol containing two hydroxyl groups differing in steric availability has been studied. The nature of the amine acting as activator and acceptor of hydrogen chloride have had significant impact on the direction of phosphorylation and the structure of the resulting products.

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Quality Control of Dichloro(1,5-cyclooctadiene)platinum(II). The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: Dichloro(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12Cl2Pt, CAS is 12080-32-9, about Laser-induced deposition of plasmonic Ag and Pt nanoparticles, and periodic arrays. Author is Mamonova, Daria V.; Vasileva, Anna A.; Petrov, Yuri V.; Danilov, Denis V.; Kolesnikov, Ilya E.; Kalinichev, Alexey A.; Bachmann, Julien; Manshina, Alina A..

Surfaces functionalized with metal nanoparticles (NPs) are of great interest due to their wide potential applications in sensing, biomedicine, nanophotonics, etc. However, the precisely controllable decoration with plasmonic nanoparticles requires sophisticated techniques that are often multistep and complex. Here, we present a laser-induced deposition (LID) approach allowing for single-step surface decoration with NPs of controllable composition, morphol., and spatial distribution. The formation of Ag, Pt, and mixed Ag-Pt nanoparticles on a substrate surface was successfully demonstrated as a result of the LID process from com. available precursors. The deposited nanoparticles were characterized with SEM, TEM, EDX, X-ray diffraction, and UV-VIS absorption spectroscopy, which confirmed the formation of crystalline nanoparticles of Pt (3-5 nm) and Ag (ca. 100 nm) with plasmonic properties. The advantageous features of the LID process allow us to demonstrate the spatially selective deposition of plasmonic NPs in a laser interference pattern, and thereby, the formation of periodic arrays of Ag NPs forming diffraction grating.

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Recommanded Product: 12080-32-9. 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: Dichloro(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12Cl2Pt, CAS is 12080-32-9, about Transition metal decorated soft nanomaterials through modular self-assembly of an asymmetric hybrid polyoxometalate. Author is Hampson, Elizabeth; Cameron, Jamie M.; Watts, Julie A.; Newton, Graham N..

An asym. functionalised Wells-Dawson organic-inorganic hybrid polyoxometalate has been post-functionalised by Pt2+ coordination, and demonstrates self-assembly into surface-decorated micellar nanostructures. This multifunctional hybrid material is found to be a redox-active soft nanomaterial and demonstrates a new mol. design strategy with potential for applications in photo- or electro-catalysis.

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Related Products of 1195-58-0. The reaction of aromatic heterocyclic molecules with protons is called protonation. Aromatic heterocycles are more basic than benzene due to the participation of heteroatoms. Compound: Pyridine-3,5-dicarbonitrile, is researched, Molecular C7H3N3, CAS is 1195-58-0, about Two-Phase Oxidations with Aqueous Hydrogen Peroxide Catalyzed by Amphiphilic Pyridinium and Diazinium Salts. Author is Hartman, Tomas; Sturala, Jiri; Cibulka, Radek.

Amphiphilic pyridinium and diazinium salts were shown to be effective catalysts in two-phase (water/chloroform or water/dichloromethane) sulfoxidations and N-oxidations with hydrogen peroxide under mild conditions. This unprecedented oxidation method utilizes covalent bonding of hydrogen peroxide to a simple pyridinium or diazinium nucleus to increase the lipophilicity of the hydroperoxide species and to subsequently activate it for oxidations in a non-polar medium. The catalytic efficiency was found to depend on the type of heteroarenium core and on the lipophilicity of the catalyst. Five series of heteroarenium catalysts were prepared and investigated: 1-Alkyl-3,5-dicyanopyridinium, 1-alkyl-3,5-dinitropyridinium, 1-alkyl-3-cyanopyrazinium, 1-alkyl-4-cyanopyrimidinium and 1-alkyl-4-(trifluoromethyl)pyrimidinium triflates (alkyl=butyl, hexyl, octyl, decyl, dodecyl and hexadecyl). Among them, the 1-octyl-3,5-dinitropyridinium and 1-decyl-4-(trifluoromethyl)pyrimidinium triflates were found to be superior catalysts, showing the best stability and the highest catalytic activity, achieving acceleration by a factor of 350 relative to the non-catalyzed reaction. In contrast to other organocatalytic two-phase oxidations that use hydrogen peroxide, the presented method is characterized by high chemoselectivity and low catalyst loading (5 mol%) and with the reactions being performed under mild conditions, i.e., at 25° using diluted hydrogen peroxide and a non-basic aqueous phase. The catalysts have simple structures and are readily available from com. materials. Practical applications are demonstrated via the oxidation of several types of sulfides and amines.

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Lv, Xin; Bao, Weiliang published an article about the compound: 1-(4-Chlorophenyl)pyrrolidin-2-one( cas:7661-33-8,SMILESS:O=C1N(C2=CC=C(Cl)C=C2)CCC1 ).Application In Synthesis of 1-(4-Chlorophenyl)pyrrolidin-2-one. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:7661-33-8) through the article.

Employing Et 2-oxocyclohexanecarboxylate as a novel, efficient, and versatile ligand, the copper-catalyzed coupling reactions of various N/O/S nucleophilic reagents with aryl halides could be successfully carried out under mild conditions. A variety of products including N-arylamides, N-arylimidazoles, aryl ethers, and aryl thioethers were synthesized in good to excellent yields.

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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called The reduction of pyridine derivatives with lithium aluminum hydride, published in 1953, which mentions a compound: 1195-58-0, mainly applied to , HPLC of Formula: 1195-58-0.

When pyridine derivatives (I) with CO2Et or CN groups at the 3- and 5-positions are treated with LiAlH4 (II) the ring system is attacked first; when the 2-, 4-, and 6-positions are substituted, the functional group are reduced. The reductions are carried out by adding a large excess of II in ether to the I in absolute ether with stirring and ice-cooling, treating the mixture with saturated NH4Cl solution, and evaporating the washed ether solution Reduction of 5 g. di-Et 2,6-lutidine-3,5-dicarboxylate in 50 cc. ether with 780 mg. II in 40 cc. ether gives 40% Et 3-hydroxymethyl-2,6-lutidine-5-carboxylate, m. 100-1°; when the mixture is refluxed 2 hrs. 65% 3,5-bis(hydroxymethyl)-2,6-lutidine, m. 141-2°, is obtained. Reduction of di-Me dinicotinate gives 50% di-Me 1,4-dihydrodinicotinate, m. 150-60°, λmaximum 220, 375 mμ (MeOH). Reduction of di-Me 2-methyl-dinicotinate also gives a dihydro derivative, b0.02 115-20°, yellow needles, m. 126°, λmaximum 220, 375 mμ (MeOH). Reduction of 10 g. 2-chloropyridine (III) with 1 g. II at 0° gives unchanged III. Reduction of 1 g. Et picolinate gives 2-pyridine methanol (picrate m. 159°). Reduction of Et 2-pyridyl-acetate gives 2-pyridineëthanol, b15 120° (picrate, m. 120°). Refluxing 50 g. dinicotinic acid with 150 cc. SOCl2 15 hrs. and treating the acid chloride with NH4OH give 26 g. diamide, m. 302°, which, warmed in 130 cc. C5H5N with 19 cc. POCl3 3 hrs at 60°, yields 15 g. dinitrile (IV), m. 113° after sublimation at 70°/1 mm. Reduction of 1 g. IV in 20 cc. ether with 300 mg. II in 10 cc. ether gives 1,4-dihydrodinicotinonitrile, yellow crystals, m. 197°, λmaximum 360 mμ (MeOH). Similar reduction of 0.43 g. 2,6-lutidine-3,5-dicarbonitrile gives the 1,4-dihydro derivative, yellow crystals, m. 225°, λmaximum 362.5 mμ (MeOH). Catalytic hydrogenation of 0.5 g. IV in 20 cc. MeOH 3 hrs. with 50 mg. PtO2, 0.5 g., gives a dihydro derivative with λmax. 360 mμ which reduces neutral AgNO3. Adding (0.5 hr.) 6.5 g. II in 300 cc. ether to 46 g. Me nicotinate in 300 cc. ether at 0°, decomposing the mixture with NH4Cl, and distilling the residue of the ether extract give 31.3 g. 3-pyridine methanol, b0.1 110° (picrate, m. 158-60°). The difference in the behavior of the pyridine esters and nitriles toward II is explained as resulting from the different polarization of the pyridine rings in these compounds

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The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: Dichloro(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12Cl2Pt, CAS is 12080-32-9, about The importance of intramolecular conductivity in three dimensional molecular solids, the main research direction is macrocyclic semiconductor preparation crystal structure electron mobility conductivity.Quality Control of Dichloro(1,5-cyclooctadiene)platinum(II).

Recent years have seen tremendous progress towards understanding the relation between the mol. structure and function of organic field effect transistors. The metrics for organic field effect transistors, which are characterized by mobility and the on/off ratio, are known to be enhanced when the intermol. interaction is strong and the intramol. reorganization energy is low. While these requirements are adequate when describing organic field effect transistors with simple and planar aromatic mol. components, they are insufficient for complex building blocks, which have the potential to localize a carrier on the mol. Here, we show that intramol. conductivity can play a role in controlling device characteristics of organic field effect transistors made with macrocycle building blocks. We use two isomeric macrocyclic semiconductors that consist of perylene diimides linked with bithiophenes and find that the trans-linked macrocycle has a higher mobility than the cis-based device. Through a combination of single mol. junction conductance measurements of the components of the macrocycles, control experiments with acyclic counterparts to the macrocycles, and analyses of each of the materials using spectroscopy, electrochem., and d. functional theory, we attribute the difference in electron mobility of the OFETs created with the two isomers to the difference in intramol. conductivity of the two macrocycles.

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Epoxy compounds usually have stronger nucleophilic ability, because the alkyl group on the oxygen atom makes the bond angle smaller, which makes the lone pair of electrons react more dissimilarly with the electron-deficient system. Compound: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about Optimization of pyrimidinyl- and triazinyl-amines as non-nucleoside inhibitors of HIV-1 reverse transcriptase.Quality Control of 3-Bromo-4-chloronitrobenzene.

Non-nucleoside inhibitors of HIV-1 reverse transcriptase are being pursued through synthesis and assaying for anti-viral activity. Following computational analyses, the focus has been on the motif Het-NH-Ph-U, where Het is an aromatic heterocycle and U is an unsaturated, hydrophobic group. Previous investigations with Het = 2-thiazoyl and 2-pyrimidinyl are extended here to triazinyl derivatives The result is several NNRTIs in the 2-20 nM range with negligible cytotoxicity and auspicious predicted pharmacol. properties.

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