Tag: M.W=100-200

In an article, author is Frenkel-Pinter, Moran, once mentioned the application of 14433-76-2, Recommanded Product: 14433-76-2, Name is N,N-Dimethylcapramide, molecular formula is C12H25NO, molecular weight is 199.333, MDL number is MFCD00043725, category is amides-buliding-blocks. Now introduce a scientific discovery about this category.

Amides were synthesized from alcohols and amines in high yields using an in situ generated active ester of N-hydroxyimide with our developed Cu-N-TiO2 catalyst at room temperature using oxygen as a sole oxidant under visible light. The catalyst can be easily prepared, robust, and recycled four times without a considerable change in catalytic activity. This developed protocol applies to a wide substrate scope and has good functional group tolerance. The application of this amidation reaction has been successfully demonstrated for the synthesis of moclobemide, an antidepressant drug, and an analog of the itopride drug on a gram scale.

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

In an article, author is Lim, Minkyung, once mentioned the application of 1668-10-6, SDS of cas: 1668-10-6, Name is H-Gly-NH2.HCl, molecular formula is C2H7ClN2O, molecular weight is 110.54, MDL number is MFCD00013008, category is amides-buliding-blocks. Now introduce a scientific discovery about this category.

The catalytic asymmetric epoxidation of alpha,beta-unsaturated ketones by tert-butylhydroperoxide (TBHP) has been well established using rare-earth metal amides RE[N(SiMe3)(2)](3) (RE = La(1), Nd(2), Sm(3), Y(4), Yb(5)) with chiral TADDOL ligands. It was found that the combination of Yb[N(SiMe3)(2)](3) and chiral TADDOL ligand H2L2 ((4S,5S)-2,2-dimethyl-alpha,alpha,alpha ‘,alpha ‘-tetra-3,5-bis(trifluormethylphenyl)-1,3-dioxolane-4,5-dimethanol) in a 1 : 1 molar ratio was the optimal choice, which provided the desired epoxides in excellent yields (89-99%) and good to high enantioselectivities (57-94% ee), using DBU as an additive. Various substrates were proved to have functional group tolerance. In addition, gram-level experiments and derivatization experiments were also studied.

If you are interested in 1668-10-6, you can contact me at any time and look forward to more communication. SDS of cas: 1668-10-6.

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

In an article, author is Wang, Jing-Wen, once mentioned the application of 13404-22-3, Name is H-Ala-OtBu.HCl, molecular formula is C7H16ClNO2, molecular weight is 181.6604, MDL number is MFCD00035524, category is amides-buliding-blocks. Now introduce a scientific discovery about this category, Formula: https://www.ambeed.com/products/13404-22-3.html.

Using chiral amino amide ionic liquids as the ligands, a new chiral ligand exchange capillary electrophoresis method with Cu(II) as the central ion was constructed for enantioseparation of labeled D,L-amino acids. The effects of key parameters, including pH value of the running buffer, the ratio of Cu(II) to chiral amino amide ionic liquids, the concentration of complexes based on Cu(II)-chiral amino amide ionic liquids were investigated. It has been observed that eight pairs of labeled D,L-amino acids could be baseline-separated with a running buffer of 15.0 mM ammonium acetate, 10.0 mM Cu(II) and 20.0 mM L-phenylalaninamide based ionic liquid at pH 5.0. The quantitation of D,L-amino acids was conducted and good linearity (r(2) >= 0.964) was obtained. Furthermore, an assay for determining the enantiomeric purity of D,L-amino acids was developed and the possible enantiorecognition mechanism was discussed briefly. The results indicated that the chiral amino amide ionic liquids could play the role of ligands in chiral ligand exchange capillary electrophoresis system and exhibit great potential in chiral analysis.

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

In an article, author is Gao, Han, once mentioned the application of 52-52-8, Recommanded Product: 1-Aminocyclopentanecarboxylic acid, Name is 1-Aminocyclopentanecarboxylic acid, molecular formula is C6H11NO2, molecular weight is 129.157, MDL number is MFCD00001381, category is amides-buliding-blocks. Now introduce a scientific discovery about this category.

Targeting protein surfaces involved in protein-protein interactions by using supramolecular chemistry is a rapidly growing field. NMR spectroscopy is the method of choice to map ligand-binding sites with single-residue resolution by amide chemical shift perturbation and line broadening. However, large aromatic ligands affect NMR signals over a greater distance, and the binding site cannot be determined unambiguously by relying on backbone signals only. We herein employed Lys- and Arg-specific H-2(C) N NMR experiments to directly observe the side-chain atoms in close contact with the ligand, for which the largest changes in the NMR signals are expected. The binding of Lys- and Arg-specific supramolecular tweezers and a calixarene to two model proteins was studied. The H-2(C) N spectra track the terminal CH2 groups of all Lys and Arg residues, revealing significant differences in their binding kinetics and chemical shift perturbation, and can be used to clearly pinpoint the order of ligand binding.

If you are interested in 52-52-8, you can contact me at any time and look forward to more communication. Recommanded Product: 1-Aminocyclopentanecarboxylic acid.

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. Computed Properties of https://www.ambeed.com/products/140-95-4.html, 140-95-4, Name is N,N’-Bis(hydroxymethyl)urea, SMILES is O=C(NCO)NCO, in an article , author is Wiemann, Jana, once mentioned of 140-95-4.

Preclinical studies of a new octreotide derivative with a chelate (DPAH-octreotide) that binds 99mTc for radiological diagnosis of neuroendocrine tumors are currently in progress. A method for preparing DPAH-octreotide is based on forming an amide bond between the amine of D-phenylalanine and the bifunctional chelate succinimid-1-yl 6-[bis(pyridin-2-ylmethyl)amino]hexanoate. An HPLC method for determining the identity, impurities, and quantitative content is proposed for DPAH-octreotide quality assurance. The validation protocol established that the HPLC analytical method for determining DPAH-octreotide had quality parameters for specificity, detection limit, linearity, accuracy, precision, and intralaboratory precision that met requirements for analytical methods and could be used for quality control of the finished product during manufacturing of reagents for preparation of related radiopharmaceuticals.

But sometimes, even after several years of basic chemistry education, it is not easy to form a clear picture on how they govern reactivity! 140-95-4, you can contact me at any time and look forward to more communication. Computed Properties of https://www.ambeed.com/products/140-95-4.html.

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

Chemistry, like all the natural sciences, Recommanded Product: 623-33-6, begins with the direct observation of nature— in this case, of matter.623-33-6, Name is H-Gly-OEt.HCl, SMILES is O=C(OCC)CN.[H]Cl, belongs to amides-buliding-blocks compound. In a document, author is Bilyachenko, Alexey N., introduce the new discover.

The placebo effect is the clinical benefit caused by interaction with a caregiver and health care system in the absence of a biologically active intervention and has been used successfully for millennia. The placebo response results from the interaction of psychosocial mechanisms, human relationships, and preconceptions functioning in specific neuroan-atomic locations with known genes and neurotransmitters. It occurs with or without the administration of an inactive substance to deliberately deceive patients. Our purpose is to review the history, benefits, and mechanisms of the placebo effect. The placebo response results from classic conditioning and positive expectations about outcome expressed by the caregiver. The outcomes are usually symptoms such as pain rather than biological outcomes such as death, and the powerful placebo may account for more than half the effect of treatment in many situations. The placebo effect results from activation of opioid, cannabinoid, and dopaminergic pathways involved in reward, expectancy, conditioning, and pain modulation. Eleven specific anatomic features in the brain identified by positron emission tomography and magnetic resonance imaging are involved. Polymorphisms in the structural genes for catecholamine O-methyltransferase and fatty acid amide oxidase significantly influence the placebo response. The placebo effect may be important in symptom suppression in angina, paroxysmal atrial fibrillation, and congestive heart failure. In the absence of deliberate deception, there are no ethical issues and given its potency, the time has come to consider how best to use the placebo in clinical practice.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions. you can also check out more blogs about 623-33-6. Recommanded Product: 623-33-6.

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

Chemistry is traditionally divided into organic and inorganic chemistry. The former is the study of compounds containing at least one carbon-hydrogen bonds. 623-33-6, Name is H-Gly-OEt.HCl, molecular formula is C4H10ClNO2, belongs to amides-buliding-blocks compound, is a common compound. In a patnet, author is Qiu, Yi, once mentioned the new application about 623-33-6, Computed Properties of https://www.ambeed.com/products/623-33-6.html.

Considering the importance of polylactic acid (PLA) biopolymer in industry, in this research we represent a protocol that benefits from the presence of PA6 phase (30 wt%), using an ester-amide exchange catalyst and GN as nanofiller to enhance PLA mechanical properties. To this purpose, it was decided to fabricate blends and nanocomposites in the presence of cobalt(II) acetylacetonate (Cat) as the catalyst. XRD patterns revealed good compatibility of the polymer moieties by broadening of the PLA characteristic peaks and also good dispersion of the GN nanoparticles within the matrix. In the TEM pictures, the GN nanoparticles size ranged from 20 to 130 nm which confirms its good intercalation and exfoliation. T-0 and T-max, considered as thermal stability, of the samples decreased slightly by reactive blending, however, the values were still comparable with them in pure PLA. DSC thermograms and the curves from DMTA exhibited the lower T-g, T-m and crystallinity values of PLA matrix in the alloys and nanocomposites especially in the presence of Cat. Investigation of tensile properties revealed significantly enhanced elongation at break, from 7 in origin PLA to the maximum of 29% in PLA/PA/Cat, with negligible deficiency in modulus, from 2.85 to a minimum of 1.95 GPa, and tensile strength, from 65 to a minimum of 46 MPa, respectively. MFI test results disclosed higher flow-ability of the alloys and composites in compare with neat PLA and also melt flow ratio in two different testing weighs, shows broad molecular weight distribution of the fabricates due to the occurrence of exchange reactions in the presence of Cat.

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

In an article, author is Max, Johannes B., once mentioned the application of 98-79-3, Product Details of 98-79-3, Name is H-Pyr-OH, molecular formula is C5H7NO3, molecular weight is 129.114, MDL number is MFCD00005272, category is amides-buliding-blocks. Now introduce a scientific discovery about this category.

Increasing attention has been given to the control of nitrogen pollutants during the process of using sewage sludge. In this paper, the gasification characteristics and the law of nitrogen migration in the process of chemical looping gasification (CLG) of sewage sludge were explored. Copper slag calcined at 1100 degrees C (1100CS), FeAl (Fe2O3+Al2O3), NiFeAl (NiFe2O4+Al2O3), and NiAl (NiO + Al2O3) were used as oxygen carrier. The addition of an oxygen carrier could increase the carbon conversion rate and decrease the low heating value. NOx precursors (HCN and NH3) were the main nitrogen-containing gas pollutants (similar to 40%). The sum yield of char nitrogen and tar nitrogen was only similar to 10%. Nitrile nitrogen, heterocyclic nitrogen and amide nitrogen were the main nitrogenous compounds in tar nitrogen. Increasing the oxidative activity of the oxygen carrier could significantly promote the oxidative transformation of N-2 from the NOx precursors, tar nitrogen, char nitrogen. Additionally, the migration of fuel nitrogen includes synchronous autothermal pyrolysis (stage I) and oxidative pyrolysis of the three-phase product under the action of [O] (stage II). Finally, this research realizes the energy utilization of sludge and reduces the release of nitrogen pollutants. (C) 2020 Elsevier Ltd. All rights reserved.

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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. 92-50-2, Name is 2-(Ethyl(phenyl)amino)ethanol, molecular formula is C10H15NO, belongs to amides-buliding-blocks compound. In a document, author is Liu, Yanpeng, introduce the new discover, Recommanded Product: 92-50-2.

Novel triazinone-based condensing reagents have been developed. The palladium-catalyzed O-N allylic rearrangement of 2-(allyloxy)-4,6-dichloro-1,3,5-triazine and subsequent regioselective substitution using alcohols and an amine afforded chlorotriazinones, which can be readily converted using N-methylmorpholine into the corresponding condensing reagents. The condensation of carboxylic acids and amines using these reagents proceeded to afford the desired amides in good yields. In comparison with 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride, the newly synthesized triazinone-based condensing reagents exhibited higher reactivity.

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 92-50-2. Recommanded Product: 92-50-2.

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. 17194-82-0, Name is 4-Hydroxyphenylacetamide, molecular formula is C8H9NO2, belongs to amides-buliding-blocks compound. In a document, author is Nyman, Julia, introduce the new discover, Computed Properties of https://www.ambeed.com/products/17194-82-0.html.

A selective copper(I)-catalyzed benzylic C(sp(3))-H geminal difunctionalization reaction of a benzylic-type sp(3) carbon was developed. This novel strategy allowed simultaneous introduction of amide and hydroxyl group in a highly selective and efficient way via successive oxidative intramolecular amidation and hydroxylation. This method was also applied to the synthesis of 3-hydroxy-2,3-dihydro-1H-pyrrolo[3,4-b]quinoxalinones from readily available 3-methyl-N-substituted quinoxaline-2-carboxamides in moderate to good yields. The five-membered cyclic hemiaminal moiety of the pyrrolo[3,4-b]quinoxalinones can serve as an intermediates for subsequent transformations into other useful functional groups. (C) 2018 Elsevier Ltd. All rights reserved.

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 17194-82-0. Computed Properties of https://www.ambeed.com/products/17194-82-0.html.

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