Category: alcohols-buliding-blocks

Safety 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 A Germylene Supported by Two 2-Pyrrolylphosphane Groups as Precursor to PGeP Pincer Square-Planar Group 10 Metal(II) and T-Shaped Gold(I) Complexes. Author is Cabeza, Javier A.; Fernandez, Israel; Fernandez-Colinas, Jose M.; Garcia-Alvarez, Pablo; Laglera-Gandara, Carlos J..

An efficient synthesis of 2-di-tert-butylphosphinomethylpyrrole (HpyrmPtBu2), by treating 2-dimethylaminomethylpyrrole (HpyrmNMe2) with tBu2PH at 135° in the absence of any solvent, has allowed the preparation of the new PGeP germylene Ge(pyrmPtBu2)2 (1), by treating [GeCl2(dioxane)] with LipyrmPtBu2, in which the Ge atom is stabilized by intramol. interactions with one (solid state) or both (solution) of its phosphine groups. Reactions of germylene 1 with Group 10 metal dichlorido complexes containing easily displaceable ligands have led to [MCl{κ3P,Ge,P-GeCl(pyrmPtBu2)2}] [M = Ni (2), Pd (3), Pt (4)], which have an unflawed square-planar metal environment. Treatment of germylene 1 with [AuCl(tht)] (tht = tetrahydrothiophene) rendered [Au{κ3P,Ge,P-GeCl(pyrmPtBu2)2}] (5), which is a rare case of a T-shaped gold(I) complex. The hydrolysis of 5 gave the linear gold(I) derivative [Au(κP-HpyrmPtBu2)2]Cl (6). Complexes 2-5 contain a PGeP pincer chloridogermyl ligand that arises from the insertion of the Ge atom of germylene 1 into a M-Cl bond of the corresponding metal reagent. The bonding in these mols. has been studied by DFT/NBO/QTAIM calculations These results demonstrate that the great flexibility of germylene 1 makes it a better precursor to PGeP pincer complexes than the previously known germylenes of this type.

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: Dichloro(1,5-cyclooctadiene)platinum(II)(SMILESS: C1=CCC/C=CCC/1.[Pt+2].[Cl-].[Cl-],cas:12080-32-9) is researched.Computed Properties of C38H34N2O4P2. The article 《Group 10 metal complexes with a tetradentate thiosemicarbazonate ligand: Synthesis, crystal structures and computational insights into the catalysis for C-C coupling via Mizoroki-Heck reaction》 in relation to this compound, is published in Journal of Molecular Structure. Let’s take a look at the latest research on this compound (cas:12080-32-9).

Mononuclear complexes were synthesized by reactions of Group 10 metal ions with bis(4-phenyl-3-thiosemicarbazone) (H2bPht), affording compounds [MII(bPht)] (M = Ni, Pd and Pt). Their characterization involved FTIR, UV-visible, 1H NMR, CV, DPV and elemental anal. Also, the crystal structures of all complexes were determined, showing that the thiosemicarbazonate ligand is coordinated as a tetradentate N,N,S,S-donor forming three five-membered chelate rings. The catalytic activity of [MII(bPht)] in Heck’s C-C coupling reaction using styrene and iodobenzene to obtain stilbenes was evaluated. It was verified that the NiII and PtII complexes present low catalytic activity, while the PdII complex showed a conversion of 99% within 24 h. Trans-stilbene was identified as the major product of the coupling reaction, up to 90%. DFT studies were also performed to better understand the catalytic behavior of these complexes giving support for a new route for Mizoroki-Heck reaction.

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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 Highly Active and Chemoselective Reduction of Halogenated Nitroarenes Catalyzed by Ordered Mesoporous Carbon Supported Platinum Nanoparticles, published in 2019-05-06, which mentions a compound: 16588-26-4, mainly applied to reduction halogenated nitroarene catalyzed carbon platinum nanoparticle, Application In Synthesis of 3-Bromo-4-chloronitrobenzene.

Highly dispersed Pt nanoparticles (∼2.2 nm) on ordered mesoporous carbon (Pt/CMK-3-HQ) were first prepared through a two-step impregnation route with aqueous solutions of 8-hydroxyquinoline (8-HQ) and H2PtCl6, resp. The Pt/CMK-3-HQ quant. converted various halogenated nitroarenes to the corresponding haloanilines using hydrazine hydrate with unprecedented activities (e.g., turnover frequency for o-chloronitrobenzene was 30.2 s-1) and exhibited high stability with 20 cycles without decrease in catalytic efficiency. The high activity and chemoselectivity of Pt/CMK-3-HQ were attributed to the cooperation effect between Pt and N species, promoting cleavage of hydrazine to generate more Pt-H- and N-H+ species for reduction of nitro groups and weakening the interaction between halogen groups and Pt atoms for activation of C-halogen bonds.

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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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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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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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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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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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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 Gold-catalyzed direct hydrogenative coupling of nitroarenes to synthesize aromatic azo compounds, published in 2014, which mentions a compound: 16588-26-4, mainly applied to nitroarene hydrogenative coupling gold catalyst; diphenyldiazene green preparation; arenes; azo compounds; gold; reduction; supported catalysts, Application In Synthesis of 3-Bromo-4-chloronitrobenzene.

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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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: 5-Methoxy-4-methylpyridin-3-amine, is researched, Molecular C7H10N2O, CAS is 77903-28-7, about A New Series of Orally Bioavailable Chemokine Receptor 9 (CCR9) Antagonists; Possible Agents for the Treatment of Inflammatory Bowel Disease.Electric Literature of C7H10N2O.

Chemokine receptor 9 (CCR9), a cell surface chemokine receptor which belongs to the G protein-coupled receptor, 7-trans-membrane superfamily, is expressed on lymphocytes in the circulation and is the key chemokine receptor that enables these cells to target the intestine. It has been proposed that CCR9 antagonism represents a means to prevent the aberrant immune response of inflammatory bowel disease in a localized and disease specific manner and one which is accessible to small mol. approaches. One possible reason why clin. studies with vercirnon, a prototype CCR9 antagonist, were not successful may be due to a relatively poor pharmacokinetic (PK) profile for the mol. We wish to describe work aimed at producing new, orally active CCR9 antagonists based on the 1,3-dioxoisoindoline skeleton. This study led to a number of compounds that were potent in the nanomolar range and which, on optimization, resulted in several possible preclin. development candidates with excellent PK properties.

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