Tag: M.W:100-200

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 Synthesis of pyrrolo[2,1-f][1,2,4]triazine congeners of nucleic acid purines via the N-amination of 2-substituted pyrroles, published in 1994-08-31, which mentions a compound: 159326-69-9, Name is 1-Aminopyrrole-2-carboxamide, Molecular C5H7N3O, Application In Synthesis of 1-Aminopyrrole-2-carboxamide.

The synthesis of several new 4-mono- and 2,4-disubstituted pyrrolo[2,1-f][1,2,4]triazines is described. Key intermediates 1-aminopyrrole-2-carbonitrile (3) and 1-amino-5-ethylpyrrole-2-carbonitrile (15) were obtained by N-amination of the corresponding pyrrole-2-carboxaldehyde followed by CHO → CN conversion with either hydroxylamine-O-sulfonic acid for 3 or O-mesitylenesulfonylhydroxylamine for 15. Cyclization of 3 or 15 with a variety of amidine reagents or, after conversion of 3 to its corresponding amide, base-catalyzed annulation completed the synthesis of the title products.

There is still a lot of research devoted to this compound(SMILES：O=C(C1=CC=CN1N)N)Application In Synthesis of 1-Aminopyrrole-2-carboxamide, and with the development of science, more effects of this compound(159326-69-9) can be discovered.

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Chen, Yanhong; Xiang, Haoyue; Tan, Cun; Xie, Yuyuan; Yang, Chunhao published the article 《A tandem copper (II)-promoted synthesis of 2-substituted pyrrolo[2,1-f][1,2,4] triazin-4(3H)-ones》. Keywords: aldehyde aminopyrroleamide annulation cupric chloride catalyst; acetal aminopyrroleamide annulation cupric chloride catalyst; pyrrolotriazinone preparation.They researched the compound: 1-Aminopyrrole-2-carboxamide( cas:159326-69-9 ).Application of 159326-69-9. 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.

Annulation of 1-amino-1H-pyrrole-2-amides with various substituted benzaldehydes, heteroaryl aldehydes, alkyl aldehydes or even acetals, promoted by cupric chloride, to synthesize 2-substituted pyrrolo[2,1-f][1,2,4]triazin-4(3H)-ones was carried out. This approach provides a useful method for constructing the privileged structure in medicinal chem. Electron-donating groups on both partners could accelerate the reaction.

There is still a lot of research devoted to this compound(SMILES：O=C(C1=CC=CN1N)N)Application of 159326-69-9, and with the development of science, more effects of this compound(159326-69-9) can be discovered.

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Formula: C9H16O2. 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. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Thermodynamic analysis of 1,3-dicarbonylic monochelates of iron(III) from equilibrium and kinetic measurements.

From a study of the complexation of FeIII with 2,6-dimethyl-3,5-heptanedione in aqueous solution, thermodn. and kinetic parameters have been obtained. Results obtained for this system and a series of structurally similar iron(III) diketonates at different temperatures, establishes isokinetic behaviors of these kinds of reactions. Anal. correlations obtained may be useful to predict, for analogous ligands in similar exptl. conditions, an essential mechanism, that pathways involving reaction of metal-hydrolyzed species with the enol tautomer are faster than pathways involving hexa-aqua species. Addnl., thermodn. parameters associated with the monochelated complexations may be predicted.

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

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Son, Tae Yang; Kim, Tae-Hyun; Nam, Sang Yong published an article about the compound: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine( cas:111-18-2,SMILESS:CN(C)CCCCCCN(C)C ).Safety of N1,N1,N6,N6-Tetramethylhexane-1,6-diamine. 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:111-18-2) through the article.

Novel crosslinked pore-filling membranes were fabricated by using a centrifugal force from the cylindrical centrifugal machine. For preparing these crosslinked pore-filling membranes, the polyphenylene oxide containing long side chains to improve the water management (hydrophilic), porous polyethylene support (hydrophobic) and crosslinker based on the diamine were used. The resulting membranes showed a uniform thickness, flexible and transparent because it is well filled. Among them, PF-XAc-PPO70_25 showed good mech. properties (56.1 MPa of tensile strength and 781.0 MPa of Young’s modulus) and dimensional stability due to the support. In addition, it has a high hydroxide conductivity (87.1 mS/cm at 80°C) and low area specific resistance (0.040 Ω·cm2), at the same time showing stable alk. stability. These data outperformed the com. FAA-3-50 membrane sold by Fumatech in Germany. Based on the optimized properties, membrane electrode assembly using XAc-PPO70_25 revealed excellent cell performance (maximum power d.: 239 mW/cm2 at 0.49 V) than those of com. FAA-3-50 Fumatech anion exchange membrane (maximum power d.: 212 mW/cm2 at 0.54 V) under the operating condition of 60°C and 100% RH as well. It was expected that PF-XAc-PPO70_25 could be an excellent candidate based on the results superior to those of com. membranes in these essential characteristics of fuel cells.

If you want to learn more about this compound(N1,N1,N6,N6-Tetramethylhexane-1,6-diamine)Safety of N1,N1,N6,N6-Tetramethylhexane-1,6-diamine, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(111-18-2).

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The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine(SMILESS: CN(C)CCCCCCN(C)C,cas:111-18-2) is researched.Name: 4-(Bromomethyl)-1-chloro-2-fluorobenzene. The article 《Ionomer optimization for water uptake and swelling in anion exchange membrane electrolyzer: hydrogen evolution electrode》 in relation to this compound, is published in Journal of the Electrochemical Society. Let’s take a look at the latest research on this compound (cas:111-18-2).

Green hydrogen produced through anion exchange membrane water electrolysis is a promising, low-cost chem. storage solution for intermittent renewable energy sources. Low-temperature electrolysis using anion exchange membranes (AEM) combines the benefits of established water electrolysis technologies based on alk. electrolysis and proton exchange membrane electrolysis. The anion conductive ionomers (ACI) used in the AEM electrolyzer (AEMEL) electrodes has been investigated. The ACI serves two primary purposes: (i) facilitate hydroxide conduction between the catalyst and bulk electrolyte and (ii) bind the catalyst to the porous transport layer and membrane. High ion exchange capacity (IEC) ACIs are desired, however, high IEC can cause excessive water uptake (WU) and detrimental ACI swelling. Proper water management is a key factor in obtaining maximum performance in AEM-based devices. In this study, a series of poly(norbornene)-based ACIs were synthesized and deployed in hydrogen evolving AEMEL cathode electrodes. A balance between ionic conductivity, WU and ionomer swelling was achieved in the ACI by varying the IEC and degree of polymer crosslinking. It was found that higher IEC ACIs with light crosslinking are preferred in the HER electrode. Such a configuration fine-tuned the WU and ionomer swelling to achieve optimum cell performance and reduce cell operating voltages.

If you want to learn more about this compound(N1,N1,N6,N6-Tetramethylhexane-1,6-diamine)HPLC of Formula: 111-18-2, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(111-18-2).

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Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 111-18-2, is researched, Molecular C10H24N2, about Crosslinked PPO-based anion exchange membranes: The effect of crystallinity versus hydrophilicity by oxygen-containing crosslinker chain length, the main research direction is crosslinnked polyphenyleneoxide anion exchange membrane crytallinity hydrophilicity AEMFC.HPLC of Formula: 111-18-2.

Crosslinked poly (2,6-dimethyl-1,4-phenylene oxide) (PPO) using hydrophilic crosslinkers that contain ethylene oxide (EO) were prepared as novel anion exchange membranes (AEMs), and the effect of crosslinker EO length was systematically investigated. The physicochem., morphol. and electrochem. properties of the corresponding AEMs were also compared against the membrane prepared from a typical hydrophobic alkyl-type crosslinker. The ethylene oxide crosslinker helped to form ion clusters and to enhance the water-holding capacity of the corresponding AEMs, which promoted high conductivity both in water and in 95% room humidity conditions, while maintaining high physicochem. stability. However, it was also found that the presence of a long ethylene oxide as a crosslinker may induce polymer crystallinity, which reduces both conductivity and the alk. stability of the corresponding crosslinked membranes. The effect of ethylene oxide chain length on the morphol., electrochem. and physicochem. properties, were also investigated. The xBEO-PPO membrane, having bis(ethylene oxide) (BEO) as a crosslinker, showed the highest conductivity of 131.96 mS/cm in water at 80 °C, and 55.21 mS/cm in 95% RH at 80 °C; this was owing to its crystalline nature. The single-cell performance of 444 mW/cm2 peak power d., was also obtained from the xBEO-PPO membrane.

If you want to learn more about this compound(N1,N1,N6,N6-Tetramethylhexane-1,6-diamine)HPLC of Formula: 111-18-2, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(111-18-2).

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Application In Synthesis of 2,6-Dimethyl-3,5-heptanedione. 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 Highly efficient enantio-differentiating hydrogenation over an ultrasonicated Raney nickel catalyst modified with tartaric acid. Author is Tai, Akira; Kikukawa, Tadashi; Sugimura, Takashi; Inoue, Yosihisa; Osawa, Tsutomu; Fujii, Satoshi.

A tartaric acid-NaBr-modified ultrasonicated Raney nickel catalyst showed enantioselective activity in the hydrogenation of 1,3-diketones and Me 3-oxoalkanonates. Hydrogenation of MeCOCH2COMe with ultrasonicated, modified Raney nickel gave (R)-MeCH(OH)CH2COMe, meso-MeCH(OH)CH2C(OH)Me, and erythro-MeCH(OH)CH2C(OH)Me in a 7:7:86 ratio; the yield of erythro-MeCH(OH)CH2CH(OH)Me (32% enantiomeric excess) was 60%. Reduction of MeCOCH2CO2Me gave (R)-MeCH(OH)CH2CO2Me in 86% enantiomeric excess.

There is still a lot of research devoted to this compound(SMILES：CC(C)C(CC(C(C)C)=O)=O)Application In Synthesis 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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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.Arakawa-Itoh, Machiko; Shibata, Masayo; Linert, Wolfgang; Fukuda, Yutaka researched the compound: 2,6-Dimethyl-3,5-heptanedione( cas:18362-64-6 ).Formula: C9H16O2.They published the article 《Steric crowding effect of 1,3-diketonates on the structures and the solution behaviors of nickel(II) mixed-ligand complexes》 about this compound( cas:18362-64-6 ) in Bulletin of the Chemical Society of Japan. Keywords: nickel diketonate bulky ligand diamine complex preparation structure; ligand strength nickel diketonate bulky ligand diamine complex; stability nickel diketonate bulky ligand diamine complex; crystal structure nickel diketonate bulky ligand diamine complex; mol structure nickel diketonate bulky ligand diamine complex. We’ll tell you more about this compound (cas:18362-64-6).

Seven nickel(II) mixed-ligand diketonate complexes, containing bulky substituents, [Ni(RCOCHCOR)(diamine)X] and [Ni(RCOCHCOR)(diamine)][Y] [R = Me, Et, iPr; amine = Me2NCH2CH2NMe2 (tmen), 1,1′-(1,2-ethanediyl)bis(piperidine) (dipe); X = NO3, Y = BPh4, BF4] were prepared The crystal structures were analyzed: nitrate complexes have a six-coordinated octahedral structure with a bidentate-coordinated NO3-, and each tetraphenylborate complex has a four-coordinated square-planar structure. The ligand field strength of [Ni(RCOCHCOR)(diamine)]BPh4 in the solid state increases in the order: [Ni(iPrCOCHCOiPr)(dipe)]BPh4 < [Ni(EtCOCHCOEt)(dipe)]BPh4 < [Ni(iPrCOCHCOiPr)(tmen)]BPh4 = [Ni(EtCOCHCOEt)(tmen)]BPh4. In solution, the change of the color depending on the donor/acceptor ability of the solvent, i.e., solvatochromism was observed When DMSO was added to a solution of [Ni(RCOCHCOR)(diamine)]BPh4 in inert 1,2-dichloroethane, the adduct formation constants are in the order: [Ni(iPrCOCHCOiPr)(dipe)]BPh4 < [Ni(EtCOCHCOEt)(dipe)]BPh4 << [Ni(iPrCOCHCOiPr)(tmen)]BPh4 = [Ni(EtCOCHCOEt)(tmen)]BPh4, reflecting the difference in steric hindrance of the ligands rather than the difference in ligand field strength. The steric crowding effect of 1,3-diketonates was observed in the solid state and solution when bulky dipe is used as diamine. There is still a lot of research devoted to this compound(SMILES：CC(C)C(CC(C(C)C)=O)=O)Formula: C9H16O2, and with the development of science, more effects of this compound(18362-64-6) can be discovered.

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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: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine, is researched, Molecular C10H24N2, CAS is 111-18-2, about Partially fluorinated, multication cross-linked poly(arylene piperidinium) membranes with improved conductivity and reduced swelling for fuel cell application.Name: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine.

As an important component in alk. membrane fuel cells, anion exchange membrane (AEM) often suffers from the tradeoff between ionic conductivity and chem./dimensional stability. We herein report a partially fluorinated poly(arylene piperidinium) AEM with multication cross-links, which was synthesized by copolymerizing 1,1,1-trifluoroacetone, N-methyl-4-piperidone, biphenyl, and subsequent crosslinking with N1, N6-bis(6-bromohexyl)-N1, N1, N6, N6-tetramethylhexane-1,6-diammonium bromide. The resultant AEM exhibited an excellent OH- conductivity of 148.7 mS cm-1 at 80 °C (IEC = 2.9 mmol g-1) due to the multication structure, which may promote microphase separation to produce wide ion-conducting channels. Compared with those without partial fluorination, the fluorinated AEM showed lower swelling ratio (33% vs. 58% at 80 °C). The ionic conductivity of the AEM remained by 85% after it was treated 1700 h in 1 M NaOH at 80 °C. In addition, the H2/O2 fuel cell assembled with the AEM yielded a peak power d. of 208 mW cm-2 at 60 °C. Our work successfully demonstrates the synergistic effect of partially fluorinated backbone and multication cross-linked structure to inhibit membrane swelling while keeping high conductivity; it is beneficial for better balancing AEM conductivity and robustness. Partially fluorinated poly(arylene piperidinium) AEM with multication cross-links. The fabricated membrane showed higher conductivity and much lower swelling compared with its non-fluorinated counterpart. [graphic not available: see fulltext]

There is still a lot of research devoted to this compound(SMILES：CN(C)CCCCCCN(C)C)Name: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine, and with the development of science, more effects of this compound(111-18-2) can be discovered.

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Kumar, Prashant; Kim, Dae Woo; Rangnekar, Neel; Xu, Hao; Fetisov, Evgenii O.; Ghosh, Supriya; Zhang, Han; Xiao, Qiang; Shete, Meera; Siepmann, J. Ilja; Dumitrica, Traian; McCool, Benjamin; Tsapatsis, Michael; Mkhoyan, K. Andre published an article about the compound: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine( cas:111-18-2,SMILESS:CN(C)CCCCCCN(C)C ).Synthetic Route of C10H24N2. 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:111-18-2) through the article.

Zeolite MFI is a widely used catalyst and adsorbent that also holds promise as a thin-film membrane. The discovery of nanometer-thick two-dimensional (2D) MFI nanosheets has facilitated methods for thin-film zeolite fabrication that open new horizons for membrane science and engineering. However, the crystal structure of 2D-MFI nanosheets and their relationship to separation performance remain elusive. Using transmission electron microscopy, we find that one- to few-unit-cell-wide intergrowths of zeolite MEL exist within 2D-MFI. We identify the planar distribution of these 1D or near-1D-MEL domains, and show that a fraction of nanosheets have high (∼25% by volume) MEL content while the majority of nanosheets are MEL-free. Atomistic simulations show that commensurate knitting of 1D-MEL within 2D-MFI creates more rigid and highly selective pores compared to pristine MFI nanosheets, and permeation experiments show a separation factor of 60 using an industrially relevant (undiluted 1 bar xylene mixture) feed. Confined growth in graphite is shown to increase the MEL content in MFI nanosheets. Our observation of these intergrowths suggests strategies for the development of ultra-selective zeolite membranes.

If you want to learn more about this compound(N1,N1,N6,N6-Tetramethylhexane-1,6-diamine)Synthetic Route of C10H24N2, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(111-18-2).

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