Tag: M.W=100-200

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. 57-00-1, Name is 2-(1-Methylguanidino)acetic acid, molecular formula is C4H9N3O2. In an article, author is Pongracz, Tamas,once mentioned of 57-00-1, Computed Properties of https://www.ambeed.com/products/57-00-1.html.

Antibiotics in soil environments are a growing concern. Identifying transformation products is key to elucidating degradation pathways and mechanisms of antibiotics and other organic micropollutants. The primary challenge of transformation product identification is the interference of matrices. In this study, stable-isotope assisted nontarget screening was used to identify biodegradation products of florfenicol in soil. A total of 74 candidates were prioritized from thousands of mass features observed by a tiered peak filtering approach. Moreover, with the support of in silico prediction tools, the structures of 12 transformation products were elucidated, and 9 of them were reported for the first time. A biodegradation map of florfenicol consisting of amide hydrolysis, dechlorination, dehydration, defluorination, and sulfone reduction was established based on these identified products. A total of 8 products were also found in 6 field soil samples with manure application. Because of the structural similarity to florfenicol, some transformation products might still keep antimicrobial activity toward a variety of bacterial species. The strategies demonstrated in this study provide a basis for efficient identification of transformation products of other organic micropollutants in a variety of environmental matrices. The results also shed light on the degradation mechanisms, risk assessments, and regulations of these compounds.

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

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 997-55-7, Name is Ac-Asp-OH, molecular formula is C6H9NO5. In an article, author is Navo, Claudio D.,once mentioned of 997-55-7, Recommanded Product: Ac-Asp-OH.

The incorporation of fluorine atoms or fluorine-containing fragments to specifical sites of organic compounds would result in unique diversifications in biological or physical properties, such as, significantly regulate the lipid solubility or metabolic stability, and promote specific binding ability to biological targets of target compounds. Monofluoroalkenes are ideal amide bond mimics, and have been widely used in the research field of pharmaceutical chemistry and drug discovery. Previously, we reported the nickel-catalyzed reductive cross coupling of gem-difluoroalkenes with unactivated secondary alkyl iodides and tertiary alkyl bromides. However, only medium yield can be obtained with primary alkyl halides, which might be caused by the lower stability and nucleophilic activity of these substrates. Herein, we report the nickel-catalyzed Suzuki-type cross coupling of fluorinated alkenyl boronates with alkyl halides for the synthesis of primary alkyl group substituted monofluoroalkenes. By using NiBr2 (diglyme) (10 mol%) and 4,4′-di-tert-butyl-2,2′-bipyridine (15 mol%) as catalytic systems, Na2CO3 (2 equiv.) as base, N,N-dimethylacetamide as solvent, we achieved the cross coupling of a variety of fluorinated alkenyl boronates with primary alkyl iodides (e.g., 5), bromides (e.g., 9) and relatively inert secondary alkyl bromide (20). Under the mild reaction conditions, this reaction performed smoothly with good isolated yields and well functional group toleration. Many synthetically useful functional groups could survive during the transformation, such as, ether (6, 7), trifluoromethyl (8), cyano (10), ester (11), and even unprotected alcohol hydroxyl group (13). In addition, heterocycles such as tetrahydrofuran (14), phthalimide (15), dioxane (16), indole (17), pyridine (27) and quinoline (35) also posed no problem for this reaction. It should be pointed out that, this reaction is applicable not only to non-activated alkyl halides, but also to the conversion of activated ally] bromides (18, 19). For the fluorinated alkenyl boronates, this reaction also exhibited good functional group compatibility and wide substrate scope, and conducted successfully with both electron-rich (e.g., 4, 24), electron-neutral (e.g., 21), or electron-deficient (e.g., 27, 31) aromatic rings. Finally, the toleration of aryl sulfonate (30) provided further opportunities for subsequent modification through transition-metal-catalyzed cross coupling reactions. Radical clock experiment with (Z)-8-iodooct-3-ene (36) provided a mixture of linear product (37a) and ring-cyclized product (37b). (Bromomethyl)cyclopropane (38) was also subjected to the standard reaction conditions, only ring-opening product (39a) was obtained. In addition, this reaction was significantly inhibited with the addition of TEMPO (2,2,6,6-tetramethvlpiperidinooxy). These results indicated a radical-type reaction mechanism for the cross coupling of fluorinated alkenyl boronates with alkyl halides. Further efforts would be devoted to develop one-pot synthesis of monofluoroalkenes through in-situ borylation of gem-difluoroalkenes and subsequent Suzuki-type cross coupling with alkyl halides.

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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, Recommanded Product: 623-33-6, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 623-33-6, Name is H-Gly-OEt.HCl, molecular formula is C4H10ClNO2. In an article, author is Pirok, Bob W. J.,once mentioned of 623-33-6.

The direct synthesis of neutral, divalent samarium and europium complexes supported by the bulky bis(tris-tert-butoxysilyl)amide (BTTSA) ligand via oxidative transmetallation is reported. Through the use of a copper(i) ligand complex, conventional lanthanide halide starting materials for complex formation are circumvented and the clean formation of divalent complexes is achieved directly from the bulk metal. The structures of the [Ln(BTTSA)(2)] (Ln = Sm, Eu) complexes are isotypic, presenting divalent lanthanide ions with distorted, six-coordinate geometries.

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

Related Products of 3493-12-7, The transformation of simple hydrocarbons into more complex and valuable products via catalytic C–H bond functionalisation has revolutionised modern synthetic chemistry. 3493-12-7, Name is DL-Methionine Methylsulfonium Chloride, SMILES is C[S+](CCC(N)C(O)=O)C.[Cl-], belongs to amides-buliding-blocks compound. In a article, author is Purslow, Jeffrey A., introduce new discover of the category.

Supramolecular self-assembly is an excellent tool for controlling the optical and electronic properties of chromophore-based molecular systems. Herein, we demonstrate how differential self-assembly affects mechanoresponsive luminescence of fluorene-benzothiadiazole-based fluorophores. We have synthesized two donor-acceptor-donor- type conjugated oligomers consisting of fluorene as the donor and benzothiadiazole as the acceptor. For facile self-assembly, both molecules are end-functionalized with hydrogen-bonding amide groups. Differential self-assembly was induced by attaching alkyl chains of different lengths onto the fluorene moiety: hexyl (FB-C6) and dodecyl (FB-C12). The molecules self-assemble to form well-defined nanostructures in nonpolar solvents and solvent mixtures. Although their optical properties in solution are not affected by the alkyl chain length, significant effects were observed in the self-assembled state, particularly in the excitation energy migration properties. As a result, remarkable differences were observed in the mechanochromic luminescence properties of the molecules. A precise structure-property correlation is made using UV-visible absorption and fluorescence spectroscopy, time-correlated single-photon counting analysis, scanning electron microscopy, and X-ray diffraction spectroscopy.

Related Products of 3493-12-7, 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 3493-12-7.

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.56-86-0, Name is H-Glu-OH, SMILES is O=C(O)[C@@H](N)CCC(O)=O, belongs to amides-buliding-blocks compound. In a document, author is Jindal, Garima, introduce the new discover, COA of Formula: https://www.ambeed.com/products/56-86-0.html.

To seek more efficient and lower toxicity anticancer compounds, several imidazole combining dehydroabietylamine derivatives including organic salts (L-1-L-2) and amides (L-3-L-5) were synthesized. Their antineoplastic activity against HeLa (cervix), MCF-7 (breast), A549 (lung) and HepG2 (liver) cells and HUVECs (umbilical vein, normal cells) in vitro were evaluated by MTT assay. The results unequivocally showed that nearly all compounds had better antineoplastic activity and lower toxicity than dehydroabietylamine (L-0). For MCF-7 cells, L-2 (0.75 M) and L-5 (2.17 M) had higher anti-MCF-7 activity than L-0 and DOX. For A549 cells, L-1 (1.85 M) and L-2 (4.37 M) had higher anti-A549 activity than L-0; in particular, the IC50 value of L-1 was much lower than that of DOX. Among these investigated compounds, L-2 and L-5 had lower IC50 values (0.75 M and 2.17 M) against MCF-7 cells and lower toxicity, which suggested that they may be potential future anticancer drugs. In addition, L-1 and L-2 could suppress cancer cell proliferation by inducing apoptosis. L-1-L-5 could bind with DNA through intercalation.

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 56-86-0 is helpful to your research. COA of Formula: https://www.ambeed.com/products/56-86-0.html.

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

Reference of 1492-24-6, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 1492-24-6, Name is H-Abu-OH, SMILES is CC[C@H](N)C(O)=O, belongs to amides-buliding-blocks compound. In a article, author is Bonin, Jeffrey P., introduce new discover of the category.

An approach to the synthesis and resolution of five- and six-membered lactams (i.e., 5-oxopyrrolidine-and 6-oxopiperidine-3-carboxylic acids) is described. The method relies on the one-pot Michael reaction-cyclization of itaconic acid or diethyl homoitaconate and enantiopure O-(alpha-phenylethyl) hydroxylamine as a ‘chiral ammonia equivalent’. It is shown that this chiral auxiliary can be used for the separation of diastereomeric lactam products and then easily removed by catalytic hydrogenolysis. (C) 2017 Elsevier Ltd. All rights reserved.

Reference of 1492-24-6, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 1492-24-6 is helpful to your research.

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. 623-33-6, Name is H-Gly-OEt.HCl, molecular formula is C4H10ClNO2, belongs to amides-buliding-blocks compound. In a document, author is Chhasatia, Rinku, introduce the new discover, Recommanded Product: H-Gly-OEt.HCl.

The bio-crude oil produced from hydrothermal liquefaction (HTL) of a high-protein microalgae useful for wastewater treatment, Galdieria sulphuraria, was comprehensively characterized, and compared to that of a high lipid microalgae useful for biofuel production, Nannochloropsis sauna. HTL was conducted in a batch reactor at temperatures of 310-350 degrees C and reaction times of 5-60 min. Characterization methods included high-resolution Fourier transform ion cyclotron resonance mass spectroscopy (FT-ICR MS), fatty add methyl ester (FAME) analysis by gas chromatography mass spectroscopy (GC/MS), proton nuclear magnetic resonance spectroscopy (H-1 NMR), and Fourier transform infrared spectroscopy (FT-IR). Milder reaction conditions favored bio-crude oil yield and quality for N. sauna, while more severe conditions (350 degrees C) were needed for G. sulphuraria. N. salinaderived bio-crude oil contained mainly C-14-C-18 fatty acid amides, while G. sulphuraria-derived bio-crude-oil had many N1-3O0-2 hetero-atom compounds. FT-ICR MS showed that the aromaticity of hetero-compounds in N. sauna bio-crude oil was higher due to N. sauna’s higher carbohydrate content and the tendency of carbohydrate derived molecules to condense at HTL conditions. FAME-GC/MS and H-1-NMR results showed that stable fatty acid amides increased in G. suiphuraria bio-crude oil at higher temperatures as more protein-derived compounds combined with lipid-derived compounds. While N-containing and high molecular weight compounds are a concern for the upgrading of bio-crude oils obtained from high-protein algal biomass, removal of carbohydrates rather than removal of proteins as a pretreatment to HTL is recommended since carbohydrate-derived compounds are more likely to create highly aromatic hetero-compounds that are much more difficult to upgrade.

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 623-33-6. Recommanded Product: H-Gly-OEt.HCl.

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

Reference of 615-05-4, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 615-05-4, Name is 4-Methoxybenzene-1,3-diamine, SMILES is NC1=CC=C(OC)C(N)=C1, belongs to amides-buliding-blocks compound. In a article, author is Bedo, Daniel, introduce new discover of the category.

The recent surge in applications of deuterated pharmaceutical agents has created an urgent demand for synthetic methods that efficiently generate deuterated building blocks. Here, we show that N-heterocyclic carbenes promote a reversible hydrogen-deuterium exchange reaction with simple aldehydes, which leads to a practical approach to synthetically valuable C1 deuterated aldehydes. The reactivity of the well-established N-heterocyclic carbene-catalysed formation of Breslow intermediates from aldehydes is reengineered to overcome the overwhelmingly kinetically favourable benzoin condensation reaction and achieve the critical reversibility to drive the formation of desired deuterated products when an excess of D2O is employed. Notably, this operationally simple and cost-effective protocol serves as a general and truly practical approach to all types of 1-D-aldehydes including aryl, alkyl and alkenyl aldehydes, and enables chemoselective late-stage deuterium incorporation into complex, native therapeutic agents and natural products with uniformly high levels (>95%) of deuterium incorporation for a total of 104 tested substrates.

Reference of 615-05-4, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. I hope my blog about 615-05-4 is helpful to your research.

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.1638767-25-5, Name is tert-Butyl (3-aminobicyclo[1.1.1]pentan-1-yl)carbamate, SMILES is O=C(OC(C)(C)C)NC1(C2)CC2(N)C1, belongs to amides-buliding-blocks compound. In a document, author is Ooi, Jecksin, introduce the new discover, Formula: https://www.ambeed.com/products/1638767-25-5.html.

This manuscript presents data related to the research article entitled Synthesis and characterization of sustainable poly-urethane foams based on polyhydroxyls with different terminal groups (DOI: 10.1016/j.polymer.2018.06.077) [1]. We provide Supplementary data on the chemical properties, in terms of FTIR characterization, of polyhydroxyls produced starting from bio-based feedstock (biosuccinic acid and 1,4 butandiol) and thermal properties (glass transition temperature-Tg and thermal degradation behavior) of polyurethane and copolymer urethane-amide foams manufactured from the aforementioned polyhydroxyls. The FTIR characterization elucidates the chemical structure of poly-hydroxyls and allows to make some hypothesis on their reaction routes with the isocyanate molecules. The thermal characterization revealed that the addition of bio-based polyhydroxyls to the sample formulations improves both the glass transition and degradation temperature of the foams. These foamed products exhibit potential performances to be applied as a substitute for conventional polyurethane foams. (C) 2018 The Authors. Published by Elsevier Inc.

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 1638767-25-5 is helpful to your research. Formula: https://www.ambeed.com/products/1638767-25-5.html.

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

Catalysts are substances that increase the reaction rate of a chemical reaction without being consumed in the process. 148-18-5, Name is Sodium diethylcarbamodithioate, SMILES is [S-]C(N(CC)CC)=S.[Na+], belongs to amides-buliding-blocks compound. In a document, author is Jia, Wei-Guo, introduce the new discover, Product Details of 148-18-5.

The lipid signal is becoming increasingly crowded as increasingly fatty acid amide derivatives are being identified and considered relevant therapeutic targets. The identification of N-arachidonoyl-ethanolamine as endogenous ligand of cannabinoid type-1 and type-2 receptors as well as the development of different-omics technologies have the merit to have led to the discovery of a huge number of naturally occurring N-acyl-amines. Among those mediators, N-acyl amino acids, chemically related to the endocannabinoids and belonging to the complex lipid signaling system now known as endocannabinoidome, have been rapidly growing for their therapeutic potential. Here, we review the current knowledge of the mechanisms for the biosynthesis and inactivation of the N-acyl amino acids, as well as the various molecular targets for some of the N-acyl amino acids described so far.

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 148-18-5 is helpful to your research. Product Details of 148-18-5.

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