Tag: M.W:100-200

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine( cas:111-18-2 ) is researched.Formula: C10H24N2.Wang, Shiyao; He, Bo; Tian, Ren; Wu, Xu; An, Xia; Liu, Yaping; Su, Jing; Yu, Zhihui; Xie, Xianmei published the article 《Novel core-shell-like Ni-supported hierarchical beta zeolite catalysts on bioethanol steam reforming》 about this compound( cas:111-18-2 ) in International Journal of Hydrogen Energy. Keywords: beta zeolite catalyst nickel support bioethanol steam reforming. Let’s learn more about this compound (cas:111-18-2).

Hierarchical-Beta zeolites have been hydrothermally synthesized by adding a new Gemini organic surfactant. The used Gemini surfactant plays the role of a “”pore-forming agents”” on the mesoscale, on the same time, providing alk. environment for the system. With this hierarchical Beta zeolite as the core support, a shell layer of Ni-containing (22 wt%) petal-like core-shell-like catalyst is successfully prepared and applied it to bioethanol steam reforming. At the reaction temperature of 350-550°, the conversion rate of ethanol and the selectivity of hydrogen were always > 85 and 70%. After reaction of 100 h on stream at 400°, there were not obvious inactivation could be observed on NiNPs/OH-MBeta catalyst.

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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 Electrochemical performance and enhanced nitrate removal of homogeneous polysulfone-based anion exchange membrane applied in membrane capacitive deionization cell, published in 2020-12-15, which mentions a compound: 111-18-2, Name is N1,N1,N6,N6-Tetramethylhexane-1,6-diamine, Molecular C10H24N2, Safety of N1,N1,N6,N6-Tetramethylhexane-1,6-diamine.

This paper aims to investigate different strategies toward the enhancement of nitrate removal in a membrane capacitive deionization cell using different membrane functionalizing agents such as trimethylamine, triethylamine, and N,N,N’,N’-tetramethyl-1,6-hexanediamine as well as a double-layer, novel homogeneous polysulfone-based anion exchange membrane. The prepared membranes exhibited nitrate vs. chloride transport number ratio in the range of 0.96-1.52. The salt adsorption capacity for the NaNO3 feed was about 1.4-fold compared to that of using NaCl in case of triethylamine functionalized membrane under individual feeding solutions of 30 mL NaCl or NaNO3 during 30 min, and adsorption/desorption voltages of 1.6/0.0 V process conditions. At the same time, this parameter was about 1.2-fold weaker for the cell with a double-layer membrane. Based on the experiments, it can be inferred that the affinity toward nitrate could be promoted as the chain length of the alkyl group increases (i.e., increasing hydrophobicity of the groups). However, due to decrement in water uptake, the overall electrochem. performance of the membranes tended to weaken as the affinity toward nitrate increased. Results showed that the prepared membranes are suitable substitutions to conventional polystyrene-based ones utilized in membrane capacitive deionization cells.

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

HPLC of Formula: 18362-64-6. 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: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Enthalpies of combustion of four methyl-substituted heptane-3,5-diones and benzoylacetone. Author is Ferrao, Maria Luisa C. C. H.; Ribeiro da Silva, M. A. V.; Suradi, S.; Pilcher, G.; Skinner, H. A..

The standard enthalpies of combustion of 2,2- and 2,6-dimethyl-, 2,2,6-trimethyl-, and 2,2,6,6-tetramethyl-3,5-heptanediones and PhCOCH2COMe (I) in O at 298.15 K were measured in a static bomb calorimeter. The standard enthalpies of formation of these ketones were calculated for the keto-enol equilibrium mixtures in the condensed state and for the liquid and gaseous enol forms from the above results. An estimate of the enthalpy of formation of I suggests that it exists predominantly in the enol form in the gaseous state.

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

Hunt, John T.; Mitt, Toomas; Borzilleri, Robert; Gullo-Brown, Johnni; Fargnoli, Joseph; Fink, Brian; Han, Wen-Ching; Mortillo, Steven; Vite, Gregory; Wautlet, Barri; Wong, Tai; Yu, Chiang; Zheng, Xiaoping; Bhide, Rajeev published the article 《Discovery of the Pyrrolo[2,1-f][1,2,4]triazine Nucleus as a New Kinase Inhibitor Template》. Keywords: pyrrolotriazine derivative preparation structure activity VEGF EGFR kinase antitumor.They researched the compound: 1-Aminopyrrole-2-carboxamide( cas:159326-69-9 ).Reference of 1-Aminopyrrole-2-carboxamide. 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:159326-69-9) here.

The pyrrolo[2,1-f][1,2,4]triazine nucleus was identified as a novel kinase inhibitor template which effectively mimics the well-known quinazoline kinase inhibitor scaffold. Attachment of a 4-((3-chloro-4-fluorophenyl)amino) substituent to the template provided potent biochem. inhibitors of the tyrosine kinase activity of EGFR, as well as inhibition of cellular proliferation of the human colon tumor cell line DiFi. Attachment of a 4-((3-hydroxy-4-methylphenyl)amino) substituent provided potent inhibitors of VEGFR-2 which also showed effects on the VEGF-dependent proliferation of human umbilical vein endothelial cells. Biol. activity was maintained with substitution at positions 5 or 6, but not 7, suggesting that the former positions are promising sites for introducing side chains which modulate physicochem. properties. Preliminary inhibition studies with varying ATP concentrations suggest that, like the quinazoline-based kinase inhibitors, the pyrrolotriazine-based inhibitors bind in the ATP pocket.

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

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 159326-69-9, is researched, SMILESS is O=C(C1=CC=CN1N)N, Molecular C5H7N3OJournal, RSC Advances called Copper(II)-catalyzed cascade approach for the synthesis of pyrrolo[2,1-f][1,2,4]triazine-fused isoquinolines, Author is Chen, Jianyang; Liu, Bo; Chen, Yanhong; He, Qian; Yang, Chunhao, the main research direction is pyrrolo triazine fused isoquinoline one pot tandem regioselective preparation; alkynylbenzaldehyde amino pyrrolecarboxamide condensation nucleophilic addition cyclization copper catalyst.Application In Synthesis of 1-Aminopyrrole-2-carboxamide.

A copper(II)-catalyzed coupling-cyclization reaction that allowed a facile access to an impressive variety of pyrrolo[2,1-f][1,2,4]triazine-fused isoquinolines, e.g., I, in good to excellent yields has been developed. The reaction proceeded with high 6-endo-dig regioselectivity, and the product was confirmed by x-ray crystallog. study. This method appeared to be compatible with different substituted starting materials that have different electronic properties, increasing its applicability to various functional groups.

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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 Design of removal agents for prevention of lithium intoxications. Chelating tendencies of model β-diketones, the main research direction is mental disorder lithium poisoning; diketone alkali metal complex; lithium diketone complex stability.Product Details of 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

Ishihara, Tatsumi; Takagi, Toshiaki; Ito, Masami; Nishiguchi, Hiroyasu; Takita, Yusaku published the article 《CO2 sensing property of CuO-BaTiO3 mixed oxide film prepared by self-assembled multibilayer film as a precursor》. Keywords: carbon dioxide sensor cupric oxide barium titanate film; self assembled multibilayer precursor cupric oxide barium titanate film.They researched the compound: 2,6-Dimethyl-3,5-heptanedione( cas:18362-64-6 ).Synthetic Route 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.

Preparation of CuO-BaTiO3 mixed oxide thin film by the decomposition of a self-assembled multibilayer film as a mol. template was studied. Also, CO2 sensing property of the resultant thin film was studied as a capacitive type sensor. The self-assembled bilayer film of few 1000 layers thickness can be obtained easily by casting an aqueous suspension consisting of dimethyldihexadecylammonium bromide (DC1-16), Cu(ClO4)2, Ba(TiO(C2O4)2), 2,6-dimethyl-3,5-heptadione (DHP), and polyvinyl alc. Divalent copper ion (Cu2+) which is associated with 2 DHP mols. was incorporated into the mol. bilayer film and BaTiO3 precursor exists at the interspace of mol. bilayer film by coordinating with polyvinyl alc. Upquenching the organic-inorganic film at 1173 K leads to the uniform film of CuO-BaTiO3 oxide mixture Although operating temperature shifted to higher temperature, the resultant film exhibits the capacitance change upon exposure to CO2. Consequently, the mixed oxide film of CuO-BaTiO3 prepared by the decomposition of multibilayer film was also an appropriate capacitive type CO2 sensor.

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

Reference of 2,6-Dimethyl-3,5-heptanedione. 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: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about FeCl3-catalyzed selective acylation of amines with 1,3-diketones via C-C bond cleavage. Author is Wang, Sinan; Yu, Yang; Chen, Xuyun; Zhu, Haipan; Du, Peile; Liu, Guohua; Lou, Liguang; Li, Hao; Wang, Wei.

We describe a novel FeCl3 catalyzed selective acylation of amines involving the C-C bond cleavage of simple 1,3-diketones. The process proceeds efficiently under a neat condition to give structurally diverse amides. Notably, the acylation process displays high selectivity toward amines over hydroxyl functionality. Traditionally difficult aromatic amines and sterically demanding disubstituted amines can engage in the process with high efficiency.

There is still a lot of research devoted to this compound(SMILES：CC(C)C(CC(C(C)C)=O)=O)Reference of 2,6-Dimethyl-3,5-heptanedione, and with the development of science, more effects of this compound(18362-64-6) can be discovered.

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

COA of Formula: C9H16O2. 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: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Solvent effects on the oxidative free radical reactions of 2-amino-1,4-naphthoquinones. Author is Tseng, Chao-Ming; Wu, Yi-Lung; Chuang, Che-Ping.

Solvent effects on the manganese(III) initiated oxidative free radical reactions of 2-amino-1,4-naphthoquinones are described. This free radical reaction provides a novel method for the synthesis of benzo[f]indole-4,9-diones, benzo[f]indole-2,4,9-triones, benzo[b]carbazole-6,11-diones and benzo[b]acridine-6,11-diones. High chemoselectivity was observed in different solvents.

There is still a lot of research devoted to this compound(SMILES：CC(C)C(CC(C(C)C)=O)=O)COA of Formula: C9H16O2, and with the development of science, more effects of this compound(18362-64-6) can be discovered.

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

The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: 2,6-Dimethyl-3,5-heptanedione( cas:18362-64-6 ) is researched.Computed Properties of C9H16O2.Kreutzberger, A.; Schuecker, R. published the article 《Condensations with hydrazine-N,N’-dicarboxylic acid diamidine. VII. 2-Amino-5,7-diisopropyl-s-triazolo[1,5-a]pyrimidine》 about this compound( cas:18362-64-6 ) in Tetrahedron. Keywords: hydrazinedicarboxylic acid diamidine; aminodiisopropyl triazolo pyrimidine. Let’s learn more about this compound (cas:18362-64-6).

In an attempt to increase cytostatic activity by the introduction of branched substituents, the condensation of hydrazine-N,N’-dicarboxylic acid diamidine (I) with 2,6-dimethyl-3,5-heptanedione (II) was investigated. At elevated temperatures, 2-amino-5,7-diisopropyl-s-triazole[1,5-a]pyrimidine (III) was obtained which was characterized by acetylation and benzoylation and by ir and NMR spectroscopy. Chem. structure proof of III was obtained through the identity of the condensation product from I and II with the compound resulting from the reaction of II with 3,5-diamino-s-triazole.

There is still a lot of research devoted to this compound(SMILES：CC(C)C(CC(C(C)C)=O)=O)Computed Properties of C9H16O2, and with the development of science, more effects of this compound(18362-64-6) can be discovered.

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