Tag: M.W:100-200

Lv, Xin; Li, Xiaojiang; Ge, Yang; Li, Qingping; Lu, Hongsheng published an article about the compound: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine( cas:111-18-2,SMILESS:CN(C)CCCCCCN(C)C ).Reference 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.

In this work, the approach for separating paraffin wax is proposed by using Span 80 combined with switchable water N,N,N’,N’-tetramethyl-1,6-hexanediamine (TMHDA), where the emulsification of paraffin wax can be promoted and paraffin wax is also separated sustainably. Here, the Span 80-containing mixture system exhibits an enhanced emulsification ability and CO2-switchable behavior upon the addition of TMHDA. Then, the paraffin wax is effectively emulsified by this switchable system containing Span 80 and TMHDA. Based on the detection of water separation rate, rheol. behavior, and micrographs of emulsified paraffin wax, it is found that the emulsification of paraffin wax can be improved by increasing the paraffin wax content and Span 80 content, and the viscosity of the paraffin wax is reduced after emulsification by this switchable system, which ascribes to the dispersion of wax crystals. In addition, the paraffin wax is separated upon introducing CO2, and the TMHDA solution is recovered upon treating with N2 at 65°C after separating the paraffin wax. The sustainable separation of paraffin wax results from the aggregation of wax crystals because of the reduced obstruction of oil droplets for wax crystals caused by the high ionic strength and the reduced surface activity of this system upon introducing CO2. Herein, it is expected that this sustainable separation can be applied in deposited wax removal in pipelines of crude oil transport.

If you want to learn more about this compound(N1,N1,N6,N6-Tetramethylhexane-1,6-diamine)Reference 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).

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

Calmon, Jean P. published the article 《Thermodynamic functions of enolization of aliphatic β-diketone》. Keywords: diketone enolization thermodn functions; enolization thermodn functions diketone.They researched the compound: 2,6-Dimethyl-3,5-heptanedione( cas:18362-64-6 ).Safety of 2,6-Dimethyl-3,5-heptanedione. 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.

The following data were determined (β-diketone, % enol form at 33°C. equilibrium constant for the keto-enol tautomer at 33°C., enthalpy of enolization -ΔH in kcal./mole, and entropy of enolization -ΔS at 33°C. in cal./mole/°K.): Ac2CH2, 79.5, 3.89, 2.8, 6.45; AcCH2COEt, 80.5, 4.09, 3.0, 7.0; iso-PrCOCH2Ac, 89, 7.88, 3.2, 6.35; iso-BuCOCH2Ac, 90, 8.87, 3.3, 6.45; tert-BuCOCH2Ac, 93.5, 14.30, 3.9, 7.45; tert-BuCH2COCH2Ac, 94, 15.65, 3.45, 5.8; iso-BuCOCH2COEt, 90.5, 9.81, 3.7, 7.55; iso-BuCOCH2COPr, 92, 11.40, 3.4, 6.3; iso-BuCOCH2COPr-iso, 95, 20.30, 4.45, 8.55; (iso-BuCO)2CH2, 93.5, 14.60, 3.3, 5.8; (iso-PrCO)2CH2, 94, 15.95, 3.7, 6.6; tert-BuCOCH2COPr-iso, 96, 23.15, 4.65, 8.95; (tert-BuCO)2CH2, 98.5, 58.9, 4.9, 8.25. The data were determined from the N.M.R. spectra of the β-diketone. The variations in the entropies are attributed to resonance stabilization of the enol form and to the steric effects of the substituents which destabilize the keto form. The strong neg. entropy is explained by a chelated enolic structure which is more rigid than the diketo form.

If you want to learn more about this compound(2,6-Dimethyl-3,5-heptanedione)Safety of 2,6-Dimethyl-3,5-heptanedione, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(18362-64-6).

Reference:
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 Novel core-shell-like Ni-supported hierarchical beta zeolite catalysts on bioethanol steam reforming, published in 2020-06-29, which mentions a compound: 111-18-2, mainly applied to beta zeolite catalyst nickel support bioethanol steam reforming, COA of Formula: C10H24N2.

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.

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

Reference:
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 Perfluorinated comb-shaped cationic polymer containing long-range ordered main chain for anion exchange membrane, published in 2020-03-10, which mentions a compound: 111-18-2, mainly applied to perfluorinated comb shaped cationic polymer long chain order; anion exchange membrane fuel cell, Name: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine.

Achieving high ionic conductivity and alk. stability of anion exchange membranes (AEMs) is critical for anion exchange membrane fuel cells (AEMFCs). Here the authors described a method of preparing perfluorinated comb-shaped cationic polymers containing long-range ordered (LROed) -CF2CF2-(CF2CF2)n-CF2-CF2- main chain with pendant (-CF2CF2SONH-) side chain terminated by long comb-hydrophilic-cationic groups for AEMs application. Super-hydrophobic backbone promoted the formation of defined nano-phase separated channels and the resulted comb-shaped AEMs demonstrated ion conductivity of 88.6 mS cm-1 at 80° and kept low H2O uptake (17.1%) and excellent dimensional stability (7.0%). Chem. robust polymer skeleton reduced hydroxide ion attack at fixed cation group and 91.8% of initial values was retained after Hoffman elimination in 8 M KOH over 16 days at 80°. Also, a membrane electrode assembly (MEA) based on perfluorinated-comb AEMs showed a peak power d. of 306.1 mW cm-2 at 80° in a H2/O2 (CO2-free) fuel cells.

If you want to learn more about this compound(N1,N1,N6,N6-Tetramethylhexane-1,6-diamine)Name: 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).

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

Application of 111-18-2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine, is researched, Molecular C10H24N2, CAS is 111-18-2, about Removal of Metal Ions in Phosphoric Acid by Electro-Electrodialysis with Cross-Linked Anion-Exchange Membranes. Author is Duan, Xiaoling; Wang, Cun-Wen; Wang, Tielin; Xie, Xiaolin; Zhou, Xingping; Ye, Yunsheng.

There are numerous metallic impurities in wet H3PO4, which causes striking neg. effects on industrial H3PO4 production The purification behavior of metallic impurities (Fe, Mg, Ca) from a wet H3PO4 solution employing the electroelectrodialysis (EED) technol. was studied. The cross-linked polysulfone anion-exchange membranes (AEMs) for EED were prepared using N,N,N’,N’-tetramethyl-1,6-hexanediamine (TMHDA) to achieve simultaneous crosslinking and quaternization without any cross-linkers or catalysts. The performance of the resulting membranes can be determined using quaternization reagents. When the molar ratio of trimethylamine/TMHDA/chloromethylated polysulfone is 3:1:1, the cross-linked membrane CQAPSU-3-1 exhibits lower H2O swelling and membrane area resistance than the noncross-linked membrane. The low membrane area resistance of CQAPSU-3-1 with long alkyl chains was obtained due to the hydrophilic-hydrophobic microphase separation structure formed by TMHDA. EED experiments with different initial H3PO4 concentrations of 0.52 and 1.07M were conducted to evaluate the H3PO4 purification of different AEMs. The EED experiments were more suitable for the purification of wet H3PO4 solution at low concentrations The H3PO4 concentration in the anode compartment could be increased from 0.52 to 1.04M. Through optimization, with an initial acid concentration of 0.52M, CQAPSU-3-1 exhibits an enhanced metallic impurity removal ratio of >72.0%, the current efficiency of >90%, and energy consumption of 0.48 kWh/kg. Therefore, CQAPSU-3-1 exhibits much higher purification efficiency than other membranes at a low initial H3PO4 concentration, suggesting its potential in H3PO4 purification application.

If you want to learn more about this compound(N1,N1,N6,N6-Tetramethylhexane-1,6-diamine)Application of 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).

Reference:
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 CO2 sensing characteristics of CuO-BaTiO3 film prepared by molecule modulation (2), published in 1998-10-31, which mentions a compound: 18362-64-6, mainly applied to sensor copper barium titanium oxide film; carbon dioxide gas sensor, Name: 2,6-Dimethyl-3,5-heptanedione.

Mixed oxide of CuO and BaTiO3 fine powder was prepared by the thermal decomposition of self-assembled organic film, in which C existed in organic phase and BaTiO3 existed in the hydrophobic phase. Since the capacitance of the obtained CuO-BaTiO3 film was increases upon exposure to CO2-CO2 concentration can be estimated with the capacitance of CuO-BaTiO3 mixed oxide film obtained by the decomposition of self-assembled organic film. The CO2 sensing characteristics was strongly affected by the decomposition condition of organic film and it was found that the optimized decomposition temperature was 900°C when calcination period was 3 h.

If you want to learn more about this compound(2,6-Dimethyl-3,5-heptanedione)Name: 2,6-Dimethyl-3,5-heptanedione, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(18362-64-6).

Reference:
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 Gold Nanoparticle Promoted Formation and Biological Properties of Injectable Hydrogels, published in 2020-09-14, which mentions a compound: 111-18-2, mainly applied to hydrogel gold nanoparticle, COA of Formula: C10H24N2.

Acceleration of gelation in the biol. environment and improvement of overall biol. properties of a hydrogel is of enormous importance. Biopolymer stabilized gold (Au) nanoparticles (NPs) exhibit cytocompatibility and therapeutic activity. Hence, in situ gelation and subsequent improvement in the property of a hydrogel by employing Au NPs is an attractive approach. We report that stable Au NPs accelerate the conventional nucleophilic substitution reaction of activated halide-terminated poly(ethylene glycol) and tertiary amine functional macromols., leading to the rapid formation of injectable nanocomposite hydrogels in vivo and ex vivo with improved modulus, cell adhesion, cell proliferation, and cytocompatibility than that of a pristine hydrogel. NP surfaces with low chain grafting d. and good colloidal stability are crucial requirements for the use of these NPs in the hydrogel formation. Influence of the structure of the amine functional prepolymer, the spacer connecting the halide leaving groups of the substrate, and the structure of the stabilizer on the rate promoting activity of the NPs have been evaluated with model low-mol.-weight substrates and macromols. by 1H NMR spectroscopy, rheol. experiments, and d. functional theory. Results indicate a significant effect of the spacer connecting the halide leaving group with the macromol. The Au nanocomposite hydrogels show sustained co-release of methotrexate, an anti-rheumatic drug, and the Au NPs. This work provides insights for designing an injectable nanocomposite hydrogel system with multifunctional property. The strategy of the use of cytocompatible Au NPs as a promoter provides new opportunity to obtain an injectable hydrogel system for biol. applications.

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

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

Synthetic Route of C9H16O2. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: 2,6-Dimethyl-3,5-heptanedione, is researched, Molecular C9H16O2, CAS is 18362-64-6, about Regioselective Rhodium-Catalyzed Addition of 1,3-Dicarbonyl Compounds to Terminal Alkynes. Author is Beck, Thorsten M.; Breit, Bernhard.

A new method for the rhodium-catalyzed regioselective C-C bond formation using terminal alkynes and 1,3-dicarbonyl compounds to achieve valuable branched α-allylated 1,3-dicarbonyl products is reported. With a Rh(I)/DPEphos/p-CF3-benzoic acid as the catalyst system, the desired products can be obtained in good to excellent yields and with perfect regioselectivity. A broad range of functional groups were tolerated, and first exptl. insights of a plausible reaction mechanism were obtained.

If you want to learn more about this compound(2,6-Dimethyl-3,5-heptanedione)Synthetic Route of C9H16O2, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(18362-64-6).

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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: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine( cas:111-18-2 ) is researched.Name: N1,N1,N6,N6-Tetramethylhexane-1,6-diamine.Ma, Lingling; Qaisrani, Naeem Akhtar; Hussain, Manzoor; Li, Lv; Jia, Yabin; Ma, Siyu; Zhou, Ruiting; Bai, Lei; He, Gaohong; Zhang, Fengxiang published the article 《Cyclodextrin modified, multication cross-linked high performance anion exchange membranes for fuel cell application》 about this compound( cas:111-18-2 ) in Journal of Membrane Science. Keywords: cyclodextrin modified salt anion exchange fuel cell membrane. Let’s learn more about this compound (cas:111-18-2).

The anion exchange membranes (AEMs) with high hydroxide ion conductivity and stability are in an urgent need for alk. membrane fuel cell applications. High ionic exchange capacity (IEC) is necessary to improve conductivity but detrimental to stability. In this work, a series of novel AEMs modified with bulky rigid β-cyclodextrin (CD) and long flexible multiple quaternary ammonium (MQ) are designed and prepared The resulting AEM with a relatively low IEC of 1.50 mmol g-1 shows a good hydroxide ion conductivity of 112.4 mS cm-1 at 80 oC, whereas its counterpart without CD modification exhibits 83.0 mS cm-1 despite a similar IEC (1.60 mmol g-1); this is because the large CD units can impart high free volume to the membrane, reducing the ion transport resistance, and meanwhile, the hydrophilicity of CD′s external surface may promote formation of ion transport channels across the long flexible MQ cross-links. The CD modified AEM also imparts the membrane a better alkali- and swelling resistance as well as a higher tensile strength, without sacrificing its hydroxide ion conduction properties, than the un-modified membrane. The H2-O2 fuel cell yields a high peak power d. of 288 mW cm-2 at 60 oC. Our work implies that the CD enabled free volume strategy is effective to balance conductivity and stability, which may pave the way to fabrication of AEMs with further improved performance.

If you want to learn more about this compound(N1,N1,N6,N6-Tetramethylhexane-1,6-diamine)Name: 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).

Reference:
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 Convenient Synthesis of Benzothiazoles and Benzimidazoles through Bronsted Acid Catalyzed Cyclization of 2-Amino Thiophenols/Anilines with β-Diketones. Author is Mayo, Muhammad Shareef; Yu, Xiaoqiang; Zhou, Xiaoyu; Feng, Xiujuan; Yamamoto, Yoshinori; Bao, Ming.

In the presence of p-toluenesulfonic acid, diketones RCOCH2COR1 (R = R1 = Me, Et, i-Pr, Ph; R = Me; R1 = Ph) underwent cyclocondensation reactions with 2-aminobenzenethiols 4-R2-2-H2NC6H3SH (R2 = H, Cl) or 1,2-benzenediamines 4-R2-1,2-C6H3(NH2)2 (R2 = H, Cl, Me, MeO, O2N) to give benzothiazoles and benzimidazoles I (R = R1 = Me, Et, i-Pr, Ph; R2 = H, Cl, Me, MeO, O2N; X = S, NH) under either solvent-free conditions at ambient temperature or in acetonitrile at 80° without an oxidant, metal catalyst, or microwave irradiation in 51-95% yields.

If you want to learn more about this compound(2,6-Dimethyl-3,5-heptanedione)HPLC of Formula: 18362-64-6, you may wish to communicate with the author of the article,or consult the relevant literature related to this compound(18362-64-6).

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