Tag: M.W=0-100

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 127-19-5, Name is N,N-Dimethylacetamide, molecular formula is C4H9NO. In an article, author is Kang Meng,once mentioned of 127-19-5, HPLC of Formula: https://www.ambeed.com/products/127-19-5.html.

Two methods were compared to convert ferrocene into N,N-diisopropylferrocenecarboxamide, N,N-diethylferrocenecarboxamide, N,N-dimethylferrocenecarboxamide, and (4-morphohnocarbonyl)ferrocene, namely, deprotometalation followed by trapping using dialkylcarbamoyl chlorides and amide formation from the intermediate carboxylic acid. The four ferrocene-carboxamides were functionalized at C-2; in the case of the less hindered and more sensitive amides, recourse to a mixed lithium-zinc 2,2,6,6-tetramethylpiperidino-based base allowed us to achieve the reactions. Halogen migration using lithium amides was next optimized. Whereas it appeared impossible to isolate the less hindered 3-iodoferrocenecarboxamides, 3-iodo-N,N-diisopropylferrocenecarboxamide proved stable and was converted to new 1,3-disubstituted ferrocenes by Suzuki coupling or amide reduction. DFT calculations were used to rationalize the results obtained.

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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics

A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 127-19-5, Name is N,N-Dimethylacetamide, molecular formula is C4H9NO. In an article, author is Kantlehner, Willi,once mentioned of 127-19-5, Recommanded Product: 127-19-5.

Hydrogen desorption properties of Li-N-H system (composed of LiH + LiNH2) doped with LiBH4 as catalyst and microwave absorber have been investigated under microwave irradiation. The results showed that pure Li-N-H system can not be heated effectively by microwave irradiation, but it can be rapidly heated up to 500 degrees C within 5 min with 7.6 wt.% LiBH4 addition by a microwave heating with a power of 400 W. Further study indicates that it is Li4BN3H10 generated during the ball milling process that acts as the microwave absorber and catalyst. Li-N-H +7.6 wt% LiBH4 by microwave heating desorbed 4.95 wt.% hydrogen which is 3.6 times more than that of Li-N-H +7.6 wt.% graphite by electric resistance heating at 250 degrees C within 30 min, indicating that the desorption kinetics of Li-N-H system is improved by the combination of the catalytic effect of Li4BN3H10 and microwave irradiation. Furthermore, the isothermal kinetics of Li-N-H with 7.6 wt.% LiBH4 under microwave irradiation were well fitted by Johnson-Mehl-Avrami-Kolmogorov (JMAK) model and the activation energy was 43.9 kJ/mol H-2 which is significantly lower than that under electric resistance heating, demonstrating that the desorption kinetics of Li-N-H with LiBH4 addition could be effectively improved by microwave irradiation.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 127-19-5, you can contact me at any time and look forward to more communication. Recommanded Product: 127-19-5.

Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics

Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 302-72-7, Name is DL-Alanine, molecular formula is C3H7NO2, belongs to amides-buliding-blocks compound. In a document, author is Lin, Eugene C., introduce the new discover, Product Details of 302-72-7.

Rapid and sensitive detection technology is the key to preventing food-borne disease outbreaks. In this study, a low-field nuclear magnetic resonance (NMR) biosensor based on polyamidoamine dendrimers was prepared for the rapid detection of Salmonella in milk. The polyamidoamine dendrimer was biotinylated by amide reaction and chelated to diethylene triamine pentacetate acid and gadolinium to form magnetic complexes. The antibody and magnetic complexes were combined through a streptavidin-biotin system using streptavidin as an intermediate bridge to obtain the immunoprobe. Salmonella was captured by the irnmunoprobe via antigen-antibody interaction and then separated from the mixture by membrane filtration. Finally, the longitudinal relaxation signal of the filtrate was obtained by NMR. The biosensor had excellent anti-interference capability and could detect Salmonella within 1.5 h at a sensitivity of 10(3) cfu mL(-1). This method based on NMR can realize detection in complex samples and has the potential to be a quick and nondestructive method for detecting target bacteria.

Balanced chemical reaction does not necessarily reveal either the individual elementary reactions by which a reaction occurs or its rate law. In my other articles, you can also check out more blogs about 302-72-7. Product Details of 302-72-7.

Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 302-72-7, Name is DL-Alanine, SMILES is NC(C)C(O)=O, in an article , author is Gupta, Shyam Sunder R., once mentioned of 302-72-7, Name: DL-Alanine.

The first domino aza-Michael/intramolecular-Michael reaction employing acrylamides as key ambivalent partners for the synthesis of delta-lactams is presented. It has been shown that the desired reactivity is contingent to the presence of an N-alkoxy group within the acrylamides. Thus, in a base-catalyzed process that operates under mild conditions, N-alkoxyacrylamides are readily converted into polysubstituted delta-lactams in good yields with good to excellent stereocontrol.

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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 57-13-6, Name is Urea, formurla is CH4N2O. In a document, author is Ferber, Sari Goldstein, introducing its new discovery. Formula: https://www.ambeed.com/products/57-13-6.html.

Chicken meat is rich in unsaturated fatty acids. Therefore, it is more susceptible to lipid oxidation and production of volatile organic compounds (VOC). In this study, we evaluated the fatty acids, antioxidants, and VOC profiles of raw and cooked meat samples derived from 4 strains of chicken differing in their growth rates, which were as follows: slow-growing (SG, Leghorn), medium-growing (MG, Hubbard and Naked Neck), and fast-growing (FG, Ross). The VOC profile of meat was measured using proton-transfer reaction-mass spectrometry (PTR-MS). The VOC were identified using PTR-time of flight-MS (PTR-ToF-MS). The data were analyzed using both univariate and multivariate models. Twenty main VOC were identified, which were classified into the following chemical categories: aldehydes, alka dienes, alkenes, furans, amides, alcohols, and other compounds. Our results revealed that the chicken genotype and the method of cooking strongly influenced the VOC profile of the meat. Identifying the relationships between these traits allowed us to highlight the trade-off of the main substrates such as n-3 and n-6 polyunsaturated fatty acids (PUFA), protective substances (antioxidants), and degradation products (VOC) of the poultry meat produced during cooking. The extent of VOC production and n-3 loss was found to be higher for the SG genotype. Reduction of n-6 was higher in MG, whereas small losses in antioxidants and PUFA were observed in the FG genotype, consequently, resulting in the lowest production of VOC. The SG and MG are genotypes more active from a kinetic point of view respect to the FG ones. For this reason, in the FG genotypes, the antioxidants are less involved in the oxidative stress induced by the movement; thus, they were available to protect the lipid of the meat during the cooking process. These results suggested that the use of SG and MG genotypes requires a specific dietary protocol (i.e., increasing the antioxidants content) to counteract the lipid oxidations in all the phases: in vivo, postmortem, and during/after cooking.

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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics

The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 593-81-7, Name is Trimethylamine hydrochloride, SMILES is CN(C)C.[H]Cl, in an article , author is Wallbaum, Jan, once mentioned of 593-81-7, Name: Trimethylamine hydrochloride.

The urease mimetic activity of Co-III amine complexes with respect to cleavage of urea was explored using SCXRD and spectroscopic techniques. The reaction of [Co-III(tren)Cl-2]Cl [tren = tris(2-aminoethyl)amine] with urea results in the formation of an isocyanato complex {[Co-III(tren)(NH3)(NCO)]Cl-2} and ammonia, following the cleavage of the amide bond. The reaction progress and the subsequent formation of cleavage products were confirmed by SCXRD analysis of the reactants as well as the products obtained during the reaction. The reaction was found to be pH and temperature dependent, and the reaction conditions were optimized to maximize conversion. The reaction kinetics was followed spectroscopically (H-1 NMR and UV/Vis), following the decrease in urea concentration or the increase in pH succeeding ammonia formation. A detailed kinetic study revealed an overall second order rate law and k(obs) was found to be 3.89 x 10(-4) m(-1) s(-1).

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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics

Reference of 3144-09-0, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 3144-09-0, Name is Methylsulfonamide, SMILES is CS(=O)(N)=O, belongs to amides-buliding-blocks compound. In a article, author is Wang, Yueqing, introduce new discover of the category.

The current study aims to assign and estimate the total creatine (tCr) signal contribution to the Z-spectrum in mouse brain at 11.7 T. Creatine (Cr), phosphocreatine (PCr) and protein phantoms were used to confirm the presence of a guanidinium resonance at this field strength. Wild-type (WT) and knockout mice with guanidinoacetate N-methyltransferase deficiency (GAMT-/-), which have low Cr and PCr concentrations in the brain, were used to assign the tCr contribution to the Z-spectrum. To estimate the total guanidinium concentrations, two pools for the Z-spectrum around 2 ppm were assumed: (i) a Lorentzian function representing the guanidinium chemical exchange saturation transfer (CEST) at 1.95 ppm in the 11.7-T Z-spectrum; and (ii) a background signal that can be fitted by a polynomial function. Comparison between the WT and GAMT-/-mice provided strong evidence for three types of contribution to the peak in the Z-spectrum at 1.95 ppm, namely proteins, Cr and PCr, the latter fitted as tCr. A ratio of 20 +/- 7% (protein) and 80 +/- 7% tCr was found in brain at 2 mu T and 2 s saturation. Based on phantom experiments, the tCr peak was estimated to consist of about 83 +/- 5% Cr and 17 +/- 5% PCr. Maps for tCr of mouse brain were generated based on the peak at 1.95 ppm after concentration calibration with in vivo magnetic resonance spectroscopy.

Reference of 3144-09-0, One of the oldest and most widely used commercial enzyme inhibitors is aspirin, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 3144-09-0.

Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics

Reference of 6313-33-3, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 6313-33-3, Name is Formimidamide hydrochloride, SMILES is N=CN.[H]Cl, belongs to amides-buliding-blocks compound. In a article, author is Davis, Victoria K., introduce new discover of the category.

Hydroxycinnamic acid amides (HCAAs) are natural compounds with antifungal, anticancer, and anti-inflammatory activities. Extraction from plants and chemical synthesis have been the major approaches to obtain these compounds. We used a biological method to synthesize HCAA derivatives (arylalkylamines). Two genes, SHT encoding serotonin N-hydroxycinnamoyl transferase and 4CL encoding 4-coumaroyl-CoA ligase, were introduced into Escherichia coli. Using this E. coli transformant as a biocatalyst, 24 arylalkylamines were synthesized. The anti-inflammatory activities of five synthesized compounds, including N-p-coumaroyl phenethylamine, N-caffeoyl phenethylamine, N-p-coumaroyl 3-phenylpropylamine, N-p-coumaroyl 4-phenylbutylamine, and N-p-coumaroyl 4-methoxyphenethylamine, were measured. Among them, N-p-coumaroyl 4-phenylbutylamine showed the best anti-inflammatory activity.

Reference of 6313-33-3, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 6313-33-3.

Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics

Chemistry, like all the natural sciences, begins with the direct observation of nature— in this case, of matter.127-19-5, Name is N,N-Dimethylacetamide, SMILES is CC(N(C)C)=O, belongs to amides-buliding-blocks compound. In a document, author is Gibadullina, Elmira M., introduce the new discover, Application In Synthesis of N,N-Dimethylacetamide.

The development of a greener allylation reagent for alpha-allylation of carbonyl compounds is of great necessity. Here we present allyltrimethylsilane as a novel allylation reagent in the photoredox-catalyzed alpha-allylation of carbonyl compounds such as ketones, esters, and amides. The reaction process shows good functional group tolerance and generates a good yield of the product. The reaction mechanism is a radical-mediated reaction by photo-induced single electron transfer.

The proportionality constant is the rate constant for the particular unimolecular reaction. the reaction rate is directly proportional to the concentration of the reactant. I hope my blog about 127-19-5 is helpful to your research. Application In Synthesis of N,N-Dimethylacetamide.

Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 593-81-7, Name is Trimethylamine hydrochloride, formurla is C3H10ClN. In a document, author is Khan, Saranjam, introducing its new discovery. Product Details of 593-81-7.

Polymer electrolytes with high Lit-ion conductivity provide a route toward improved safety and performance of Li+-ion batteries. However, most polymer electrolytes suffer from low ionic conduction and an even lower Li+-ion contribution to the conductivity (the transport number, t(+)), with the anion typically transporting over 80% of the charge. Here, we show that subtle and potentially undetected associations within a polymer electrolyte can entrain both the anion and the cation. When removed, the conductivity performance of the electrolyte can be improved by almost 2 orders of magnitude. Importantly, while some of this improvement can be attributed to a decreased glass transition temperature, T-g, the removal of the amide functional group reduces interactions between the polymer and the Li+ cations, doubling the Li+ t(+) to 0.43, as measured using pulsed-field-gradient NMR. This work highlights the importance of strategic synthetic design and emphasizes the dual role of T-g and ion binding for the development of polymer electrolytes with increased total ionic conductivity and the Lit ion contribution to it.

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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics