Category: 18362-64-6

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 Structure and NIR-luminescence of ytterbium(III) beta-diketonate complexes with 5-nitro-1,10-phenanthroline ancillary ligand: assessment of chain length and fluorination impact, published in 2013, which mentions a compound: 18362-64-6, Name is 2,6-Dimethyl-3,5-heptanedione, Molecular C9H16O2, Category: thiazole.

Seven new tris(β-diketonate)ytterbium(III) complexes with the general formula [Yb(β-diketonate)3(5NO2phen)] [the β-diketone is 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione (1), 4,4,4-trifluoro-1-(2-furyl)-1,3-butanedione (2), 1,1,1-trifluoro-2,4-pentanedione (3), 1,1,1-trifluoro-5,5-dimethyl-2,4-hexanedione (4), 1,1,1,5,5,6,6,7,7,7-decafluoro-2,4-heptanedione (5), 2,4-hexanedione (6) or 2,6-dimethyl-3,5-heptanedione (7), and 5NO2phen = 5-nitro-1,10-phenanthroline] were synthesized and characterized by elemental anal., attenuated total reflectance-FTIR and photoluminescence spectroscopy. Single crystal x-ray structures have been determined for three fluorinated complexes (3-5) and ground state geometries of the other four complexes have been predicted using the Sparkle/PM6 model (1-2, 6-7). These exptl. and semi-empirical structures reveal octacoordination around the Yb3+ ion. Photoluminescence studies and lifetime measurements show that the increase in the fluorinated β-diketonate chain length is associated with a decrease in Yb3+ luminescence intensity of the 2F5/2 → 2F7/2 transition at ∼980 nm and the 2F5/2 excited state lifetime, while the ligand lifetime value remains almost unaffected. Finally, fluorination of the ligands is only advised when the complexes are to be used for co-doping with isostructural Er3+ complexes for optical amplifiers, since it leads to a slight decrease in luminescence intensity for the same β-diketonate chain length.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Tang, Dewei; Buck, Jason R.; Hight, Matthew R.; Manning, H. Charles published the article 《Microwave-assisted organic synthesis of a high-affinity pyrazolo-pyrimidinyl TSPO ligand》. Keywords: pyrazolopyrimidine DPA714 preparation microwave assisted translocator protein TSPO ligand.They researched the compound: 2,6-Dimethyl-3,5-heptanedione( cas:18362-64-6 ).Computed Properties of C9H16O2. 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:18362-64-6) here.

A dramatically improved total synthesis of the high-affinity translocator protein (TSPO) ligand DPA-714 (I), featuring microwave-assisted organic synthesis (MAOS), was reported. Compared with previously described approaches, this MAOS method dramatically reduced overall reaction time without adversely effecting reaction yields.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Enthalpies of vaporization of β-diketones, the main research direction is vaporization heat aliphatic diketone.Quality Control of 2,6-Dimethyl-3,5-heptanedione.

The enthalpies of vaporization (ΔHv0) of 1,1,1,5,5,5-hexafluoro-2,4-pentanedione [1522-22-1], 1,1,1-trifluoro-2,4-pentanedione [367-57-7], and 4 Me2CRCOCH2COCMeR1R2 (R, R1, R2 = H, Me), e.g. 2,2,6,6-tetramethyl-3,5-heptanedione [1118-71-4], were determined by calorimetry. A graph of ΔHv0 against b.p. for the 7 diketones and (MeCO)2CH2 wasa smooth weakly convex curve. The increments of ΔHv0 by CH2 groups were close to those in aliphatic ketones.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Article, ACS Omega called Equilibrium in the Catalytic Condensation of Carboxylic Acids with Methyl Ketones to 1,3-Diketones and the Origin of the Reketonization Effect, Author is Ignatchenko, Alexey V.; DiProspero, Thomas J.; Patel, Heni; LaPenna, Joseph R., which mentions a compound: 18362-64-6, SMILESS is CC(C)C(CC(C(C)C)=O)=O, Molecular C9H16O2, Related Products of 18362-64-6.

Acetone is the expected ketone product of acetic acid decarboxylative ketonization reaction with metal oxide catalysts used in the industrial production of ketones and for biofuels upgrade. Decarboxylative cross-ketonization of a mixture of acetic and isobutyric acids yields highly valued unsym. Me iso-Pr ketone (MIPK) along with two less valuable sym. ketones, acetone and diisopropyl ketone (DIPK). We describe a side reaction of isobutyric acid with acetone yielding the cross-ketone MIPK with monoclinic zirconia and anatase titania catalysts in the absence of acetic acid. We call it re-ketonization reaction because acetone is deconstructed and used for the construction of MIPK. Isotopic labeling of the isobutyric acid’s carboxyl group shows that it is the exclusive supplier of the carbonyl group of MIPK, while acetone provides only Me group for MIPK construction. More branched ketones, MIPK or DIPK, are less reactive in their re-ketonization with carboxylic acids. The proposed mechanism of re-ketonization supported by DFT computations starts with acetone enolization and proceeds via its condensation with surface isobutyrate to a beta-diketone similar to beta-keto acids formation in the decarboxylative ketonization of acids. Decomposition of unsym. beta-diketones with water (or methanol) by the retro-condensation reaction under the same conditions over metal oxides yields two pairs of ketones and acids (or esters in case of methanol) and proceeds much faster compared to their formation. The major direction yields thermodynamically more stable products – more substituted ketones. DFT calculations predict even a larger fraction of the thermodynamically preferred pair of products. The difference is explained by some degree of a kinetic control in the opposite direction. Re-ketonization has lower reaction rates compared to regular ketonization. Still, a high extent of re-ketonization occurs unnoticeably during the decarboxylative ketonization of acetic acid as the result of acetone reaction with acetic acid. This degenerate reaction is the major cause of the inhibition by acetone of its own rate of formation from acetic acid at high conversions.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

The chemical properties of alicyclic heterocycles are similar to those of the corresponding chain compounds. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Microwave-assisted organic synthesis of a high-affinity pyrazolo-pyrimidinyl TSPO ligand, the main research direction is pyrazolopyrimidine DPA714 preparation microwave assisted translocator protein TSPO ligand.Name: 2,6-Dimethyl-3,5-heptanedione.

A dramatically improved total synthesis of the high-affinity translocator protein (TSPO) ligand DPA-714 (I), featuring microwave-assisted organic synthesis (MAOS), was reported. Compared with previously described approaches, this MAOS method dramatically reduced overall reaction time without adversely effecting reaction yields.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

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 A Study on the Development of Chemical Vapor Deposition Precursors. 4. Syntheses and Characterization of New N-Alkoxo-β-ketoiminate Complexes of Niobium and Tantalum, published in 2002-04-30, which mentions a compound: 18362-64-6, mainly applied to ethoxide niobium tantalum alkoxoketoiminate complex preparation CVD precursor; thermal decomposition stability niobium tantalum ethoxide alkoxoketoiminate; tantalum oxide film preparation ethoxide alkoxoketoiminate complex precursor; niobium oxide film preparation ethoxide alkoxoketoiminate complex precursor; ketoiminate alkoxo niobium tantalum ethoxide complex preparation CVD precursor, Application In Synthesis of 2,6-Dimethyl-3,5-heptanedione.

Partial replacement of ethoxide ligands with N-alkoxo-β-ketoiminates in the tantalum or niobium ethoxides resulted in M(N-alkoxo-β-ketoiminate)(OEt)3 (M = Ta and Nb) complexes. Most of these complexes are liquid and showed enhanced thermal and chem. stability, especially toward moisture. These complexes have octahedral geometry with a meridional N-alkoxo-β-ketoiminate ligand and showed fluxional behaviors. All of these precursors, especially the ones with Me groups on both the N-alkoxo and β-ketoiminate backbones, demonstrate considerably higher deposition rates than M2(OEt)10 (M = Ta and Nb), one of the most popular precursors for Ta2O5 and Nb2O5 films. TGA experiments showed that successive decomposition of ethoxide ligands is followed by decomposition of N-alkoxo-β-ketoiminate in the pyrolysis process. Introduction of a Me group onto the N-hydroxyethyl backbone enhanced the thermal stability at lower temperatures and the pyrolysis rate at higher temperatures X-ray diffraction patterns indicate that the deposited films are not crystallized until the substrate temperature goes over 650°. Well-crystallized longish grains were formed in the Ta2O5 film deposited at 700°, but it was found from the depth profile spectra by Auger electron spectroscopy (AES) that the nitrogen and carbon impurities are 2.3% and 4.2%, resp., for the Ta2O5 film deposited at 550°. Heat treatment at 700° in oxygen removed the nitrogen impurity in this Ta2O5 completely, and the residual carbon is negligible from the AES and XPS results.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

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 Manganese(III) Acetate Initiated Oxidative Free Radical Reactions between 2-Amino-1,4-naphthoquinones and β-Dicarbonyl Compounds, published in 2000-08-25, which mentions a compound: 18362-64-6, Name is 2,6-Dimethyl-3,5-heptanedione, Molecular C9H16O2, COA of Formula: C9H16O2.

Manganese(III) acetate oxidative free radical reaction between 2-amino-1,4-naphthoquinones and β-dicarbonyl compounds is described. With 2-anilino-1,4-naphthoquinone, benzo[b]acridine-6,11-dione and benzo[f]indole-4,9-diones were obtained. In most cases, benzo[b]acridine-6,11-dione is the major product. The reaction of 2-alkylamino-1,4-naphthoquinone with 1,3-diones gave benzo[f]indole as the only product. When 2-alkylamino-1,4-naphthoquinone was treated with β-keto esters, three benzo[f]indoles were obtained.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

Electric Literature of C9H16O2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Manganese(III) Acetate Initiated Oxidative Free Radical Reactions between 2-Amino-1,4-naphthoquinones and β-Dicarbonyl Compounds. Author is Jiang, Ming-Chyuan; Chuang, Che-Ping.

Manganese(III) acetate oxidative free radical reaction between 2-amino-1,4-naphthoquinones and β-dicarbonyl compounds is described. With 2-anilino-1,4-naphthoquinone, benzo[b]acridine-6,11-dione and benzo[f]indole-4,9-diones were obtained. In most cases, benzo[b]acridine-6,11-dione is the major product. The reaction of 2-alkylamino-1,4-naphthoquinone with 1,3-diones gave benzo[f]indole as the only product. When 2-alkylamino-1,4-naphthoquinone was treated with β-keto esters, three benzo[f]indoles were obtained.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

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 Design of removal agents for prevention of lithium intoxications. Chelating tendencies of model β-diketones, published in 1975, which mentions a compound: 18362-64-6, Name is 2,6-Dimethyl-3,5-heptanedione, Molecular C9H16O2, HPLC of Formula: 18362-64-6.

Formation constants for (Me2CRCO)2CH2 (R = Me, H) with Li+, Na+, K+, Rb+, Cs+ were determined to define the specificity for Li. While (Me3CCO)2CH2 can be used to sep. Li from the other ions, (Me2CHCO)2CH2 is even better and can, to a lesser extent, be used to sep. Na+ from K+, Rb+, and Cs+.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica

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 A cyclic process on the recovery of copper from metal-sludge by solvent extraction, published in 1979-01-31, which mentions a compound: 18362-64-6, Name is 2,6-Dimethyl-3,5-heptanedione, Molecular C9H16O2, SDS of cas: 18362-64-6.

Cu in sludge was leached with NH3 solution, and the leach solution was extracted with di-isobutyryl methane [18362-64-6] in toluene. The Cu in the organic solvent was stripped with H2SO4, and recovered by electrolysis of the saturated CuSO4 solution The leach solution, the extracting reagent, and H2SO4 were recycled. Recovery of Cu from sludge was 90% and recovery from leach solution was 99%.

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Thiazole | C3H3NS – PubChem,
Thiazole | chemical compound | Britannica