Month: April 2022

Synthetic Route of C12H13BrN2O2. Aromatic compounds can be divided into two categories: single heterocycles and fused heterocycles. Compound: tert-Butyl 5-bromo-1H-indazole-1-carboxylate, is researched, Molecular C12H13BrN2O2, CAS is 651780-02-8, about The application of nitrogen heterocycles in mitochondrial-targeting fluorescent markers with neutral skeletons. Author is Wang, Yue; Xu, Bing; Sun, Ru; Xu, Yu-Jie; Ge, Jian-Feng.

Four different neutral fluorescent markers containing nitrogen heterocycles (quinoxaline, 1H-pyrazolo[3,4-b]pyridine, 1H-indazole and 1H-pyrrolo[2,3-b]pyridine) as targeting groups were designed and prepared in order to screen out structural units for targeting mitochondria. Several classical fluorophores (coumarin, 1,8-naphthalimide and Nile Red) were connected with these heterocycles via Suzuki coupling reactions. The derivatives of coumarin (dyes 1a and 2a-c) and 1,8-naphthalimide (dyes 3a-c) fluoresced in the blue-green region, while the Nile Red derivatives (dyes 1b and 4a-c) fluoresced in the red light region. The optical properties of the classical fluorophores, such as emission properties and photostability, were retained in the new dyes. All of them showed low cytotoxicity. Confocal fluorescence experiments in L929 normal cells and HeLa cancer cells indicated that dyes 1a-b targeted dual sites of mitochondria and lipid droplets. Moreover, dyes 2a-c, 3a-c and 4a-c targeted mitochondria; meanwhile, there are only a few mitochondria-targeting markers with neutral skeletons. Furthermore, it was found that nitrogen heterocycles with N-H bonds can improve the mitochondrial targeting ability of partial neutral fluorophores.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Molecular orbital study of the NMR and electronic spectra of monocyanopyridines, dicyanopyridines, and 2,4,6-tricyanopyridine, published in 1970, which mentions a compound: 1195-58-0, Name is Pyridine-3,5-dicarbonitrile, Molecular C7H3N3, Formula: C7H3N3.

The Hueckel MO and SCF methods gave identical results in the determination of quantum-chem. characteristics of 10 cyanopyridines. A good agreement between the exptl. absorption curves and electronic transitions, calculated by the limited configuration interaction (LCI) method, was obtained in the electronic spectra. In the PMR spectra, there was an improved correlation with the exptl. data in the use of the SCF method only in the case of chem. shifts and π-electron d. The application of the SCF orbitals in the place of Hueckel MO in the LCI calculation of the electronic spectra did not improve significantly the description of the π-electron structure of the compounds studied.

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Computed Properties of C8H12Cl2Pt. 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 A sterically congested 1,2-diphosphino-1′-boryl-ferrocene: synthesis, characterization and coordination to platinum. Author is Lerayer, Emmanuel; Renaut, Patrice; Roger, Julien; Pirio, Nadine; Cattey, Helene; Fleurat-Lessard, Paul; Boudjelel, Maxime; Massou, Stephane; Bouhadir, Ghenwa; Bourissou, Didier; Hierso, Jean-Cyrille.

A new class of tritopic ferrocene-based ambiphilic compounds has been prepared by assembling diphosphino- and boryl-substituted cyclopentadienides at iron. The presence of five sterically demanding substituents on the ferrocene platform induces conformational constraints, as is apparent from XRD and NMR data, but does not prevent the chelating coordination to platinum. The Lewis acid moiety is pendant in both the free ligand and the platinum complex.

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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 Synthesis and reactions of 3-methyl-5-cyanopyridine under oxidative ammonolysis conditions, published in 1988, which mentions a compound: 1195-58-0, mainly applied to ammoxidation lutidine vanadia titania catalyst; cyanomethylpyridine preparation catalyst; methyl nicotinonitrile preparation catalyst; pyridine cyano methyl preparation catalyst, HPLC of Formula: 1195-58-0.

V2O5-TiO2 (1:32) was recommended over 1:16 V2O5-TiO2, 1:0.5 V2O5-SnO2 and 2:1 V2O5-Fe2O3 for the title synthesis, >90% selectivity with 100% 3,5-butadiene (I) conversion at 340° with 1:24:10:10-40 I-O2-NH3-H2O. The 3,5-dicyanopyridine yield was 4.2-5.3% under these conditions, but reached 65.2% at 380° in the absence of H2O.

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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.Ruostesuo, P.; Hakkinen, A. M.; Karjalainen, J. researched the compound: 1-(4-Chlorophenyl)pyrrolidin-2-one( cas:7661-33-8 ).SDS of cas: 7661-33-8.They published the article 《Carbon-13, nitrogen-15m, and oxygen-17 NMR chemical shifts of substituted 1-phenyl-2-pyrrolidinones》 about this compound( cas:7661-33-8 ) in Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy. Keywords: NMR phenylpyrrolidinone derivative. We’ll tell you more about this compound (cas:7661-33-8).

The C-13 and N-15 NMR chem. shifts and the direct C-proton coupling constants of 1-phenyl-2-pyrrolidinone and its 2′-Me,3′-Me,4′-Me,2′-chloro,3′-chloro,4′-chloro,3′-methoxy,4′-methoxy and 4′-nitro derivatives were measured in di-Me sulfoxidde. The O-17 NMR chem. shifts of some of the compounds were determined in acetone. The effect of substituents on the chem. shifts of carbonyl carbons correlates well with the Hammett substituent parameters and the N chem. shifts seem to follow a similar trend. The variation of the O chem. shift due to the substituents is small. The chem. shifts of aromatic carbons can mainly be derived using the substituent parameters of benzene, some deviation probably due to steric effects is observable, however.

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Formula: C6H3BrClNO2. 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: 3-Bromo-4-chloronitrobenzene, is researched, Molecular C6H3BrClNO2, CAS is 16588-26-4, about Gold-catalyzed direct hydrogenative coupling of nitroarenes to synthesize aromatic azo compounds. Author is Liu, Xiang; Li, Hai-Qian; Ye, Sen; Liu, Yong-Mei; He, He-Yong; Cao, Yong.

The azo linkage is a prominent chem. motif which has found numerous applications in materials science, pharmaceuticals, and agrochems. Described herein is a sustainable heterogeneous-gold-catalyzed synthesis of azo arenes. Available nitroarenes are deoxygenated and linked selectively by the formation of N-N bonds using mol. H2 without any external additives. As a result of a unique and remarkable synergy between the metal and support, a facile surface-mediated condensation of nitroso and hydroxylamine intermediates is enabled, and the desired transformation proceeds in a highly selective manner under mild reaction conditions. The protocol tolerates a large variety of functional groups and offers a general and versatile method for the environmentally friendly synthesis of sym. or asym. aromatic azo compounds © 2014 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

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Category: alcohols-buliding-blocks. 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: Dichloro(1,5-cyclooctadiene)platinum(II), is researched, Molecular C8H12Cl2Pt, CAS is 12080-32-9, about Photophysical Properties of Phosphorescent Mono- and Bimetallic Platinum(II) Complexes with C C* Cyclometalating NHC Ligands. Author is Pinter, Piermaria; Soellner, Johannes; Strassner, Thomas.

Due to their square-planar geometry, Pt(II) complexes demonstrate an extraordinary and unique photophys. behavior. The photophys. properties of monometallic Pt(II) complexes depend on the concentration, while in bimetallic Pt(II) complexes they depend on the distance between the metal centers. The authors reveal a correlation between the electronic and photophys. properties of monomeric monometallic Pt(II) complexes and their aggregates with the corresponding bimetallic complexes.

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In general, if the atoms that make up the ring contain heteroatoms, such rings become heterocycles, and organic compounds containing heterocycles are called heterocyclic compounds. An article called Dipole moments of substituted 1-phenyl-2-pyrrolidones, published in 1970, which mentions a compound: 7661-33-8, Name is 1-(4-Chlorophenyl)pyrrolidin-2-one, Molecular C10H10ClNO, Computed Properties of C10H10ClNO.

The dipole moments of 1-phenyl-2-pyrrolidone and its 2′-methyl, 3′-methyl, 4′-methyl, 2′-chloro, 3′-chloro, 4′-chloro, 2′-methoxy, 3′-methoxy, and 4′-methoxy derivatives were measured in dioxane at 30° and the dipole moments of the 1st 4 compounds also in cyclohexane at 30°. The dipole moments were larger in dioxane than in cyclohexane. The dipole moments of all the compounds except 1-(3-methoxyphenyl)-2-pyrrolidone and 1-(4-methoxyphenyl)-2-pyrrolidone agree with the values calculated by applying Eyring’s treatment and assuming free rotation of the pyrrolidonyl group about the bond joining it to the aromatic ring.

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Pickl, Thomas; Poethig, Alexander published the article 《Bimetallic Platinum Group Complexes of a Macrocyclic Pyrazolate/NHC Hybrid Ligand》. Keywords: macrocyclic calix imidazolylidenepyrazolate bimetallic platinum palladium NHC carbene preparation; pyrazolate macrocyclic NHC hybrid bimetallic platinum palladium preparation structure; crystal mol structure macrocyclic calix imidazolylidenepyrazolate carbene platinum palladium.They researched the compound: Dichloro(1,5-cyclooctadiene)platinum(II)( cas:12080-32-9 ).Application In Synthesis of Dichloro(1,5-cyclooctadiene)platinum(II). 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:12080-32-9) here.

Authors present the synthesis, structural characterization, and photophys. properties of dinuclear PdII and PtII-NHC complexes Pd2L(PF6)2 and Pt2L(PF6)2 based on a macrocyclic calix[4]imidazolylidene[2]pyrazolate ligand obtained by in situ deprotonation of the tetraimidazolium salt H6L(PF6)4. The PtII congener was also prepared by transmetalation from previously published AgI pillarplex Ag8L2(PF6)4. NMR spectroscopy (1H, 13C, 195Pt) combined with SC-XRD studies elucidated the structure of the PdII and PtII complexes in the solid state and in solution The d8 metal ions of both congeners are coordinated in a slightly distorted square-planar arrangement. Similar to the previously reported NiII complex Ni2L(PF6)2, the heavier metal homologues adopt a bent, saddle-shaped structure. As observed for structurally similar PtII complexes in solution, bimetallic Pt2L(PF6)2 showed photoluminescence in the blue region. In the solid state, emission was observed at a similar energy with unusually short lifetimes compared to other monometallic PtII complexes. DFT and TDDFT studies shed light on the nature of the most bathochromic transitions, suggesting a significant pyrazolate- and NHC-centered π-π* character.

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Kuthan, Josef; Prochazkova, J. published the article 《Dihydropyridines. XVII. π-Electronic structure and reactivity of alkyl 3,5-dicyanopyridines》. Keywords: cyanopyridines structure reactivity; pyridines cyano structure reactivity.They researched the compound: Pyridine-3,5-dicarbonitrile( cas:1195-58-0 ).Formula: C7H3N3. 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:1195-58-0) here.

The π-electronic structure of alkyl 3,5-dicyanopyridines was studied by the Hueckel M.O. L.C.A.O. method. The heteroatom model was used in the calculations The exptl. course of nucleophilic reactions was in agreement with the calculated superdelocalizabilities. Some of the exptl. excitation energies depended linearly on the calculated transition energies. Correlation was found between the values of proton shifts in the N.M.R. spectra of dicyanopyridines and the corresponding electron densities.

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