Tag: M.W=100-200

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: 84547-64-8, is researched, Molecular C5H7ClN2, about Synthesis of new proton-pump inhibitors, the main research direction is antiulcer agent pyrazole derivative preparation.Electric Literature of C5H7ClN2.

For development new anti-ulcer agents, we synthesized omeprazole analogs, in which pyridine group was replaced by pyrazole moiety, to increase pharmacol. activity and to decrease side effects, and also synthesize substituted benzimidazole rings.

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

Formula: C5H7ClN2. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: 3-(Chloromethyl)-1-methyl-1H-pyrazole, is researched, Molecular C5H7ClN2, CAS is 84547-64-8, about Synthesis of pyrazole derivatives from 1,1-dimethylhydrazine and chlorovinyl ketones. Author is Levkovskaya, G. G.; Bozhenkov, G. V.; Malyushenko, R. N.; Mirskova, A. N..

The reaction of accessible 2-chlorovinyl Me ketones with 1,1-dimethylhydrazine gave pyrazole derivatives in high yields. 1,1,1-Trimethylhydrazinium chloride was isolated as second product of this reaction in high yield.

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 3-(Chloromethyl)-1-methyl-1H-pyrazole(SMILESS: CN1N=C(CCl)C=C1,cas:84547-64-8) is researched.Category: amides-buliding-blocks. The article 《1-Alkylpyrazoles and 1-alkyl-5-chloropyrazoles from halovinyl ketones and 1,1-dialkylhydrazines》 in relation to this compound, is published in Russian Journal of Organic Chemistry. Let’s take a look at the latest research on this compound (cas:84547-64-8).

Regioselective heterocyclization of chlorovinyl ketones R1COCH:C(R2)Cl (R1 = Me, R2 = H; R1 = n-Pr, R2 = H, Cl; R1 = CH2Cl, R2 = H) with 1,1-dialkyl-hydrazines NH2N(R3)2 (R3 = Me, n-Bu) to pyrazoles I involved intermediate formation of the corresponding dialkylhydrazones II. The mass spectrum fragmentation pattern of chlorine-containing pyrazoles I (R1 = CH2Cl, R2 = H, R3 = Me; R1 = n-Pr, R2 = Cl, R3 = Me) depended on the position of the halogen atom.

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

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: 3-(Chloromethyl)-1-methyl-1H-pyrazole(SMILESS: CN1N=C(CCl)C=C1,cas:84547-64-8) is researched.Safety of 3-(Chloromethyl)-1-methyl-1H-pyrazole. The article 《Discovery of the First α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid (AMPA) Receptor Antagonist Dependent upon Transmembrane AMPA Receptor Regulatory Protein (TARP) γ-8》 in relation to this compound, is published in Journal of Medicinal Chemistry. Let’s take a look at the latest research on this compound (cas:84547-64-8).

Transmembrane AMPA receptor regulatory proteins (TARPs) are a family of scaffolding proteins that regulate AMPA receptor trafficking and function. TARP γ-8 is one member of this family and is highly expressed within the hippocampus relative to the cerebellum. A selective TARP γ-8-dependent AMPA receptor antagonist (TDAA) is an innovative approach to modulate AMPA receptors in specific brain regions to potentially increase the therapeutic index relative to known non-TARP-dependent AMPA antagonists. We describe here, for the first time, the discovery of a noncompetitive AMPA receptor antagonist that is dependent on the presence of TARP γ-8. Three major iteration cycles were employed to improve upon potency, CYP1A2-dependent challenges, and in vivo clearance. An optimized mol., compound (-)-25 (LY3130481), was fully protective against pentylenetetrazole-induced convulsions in rats without the motor impairment associated with non-TARP-dependent AMPA receptor antagonists. Compound (-)-25 could be utilized to provide proof of concept for antiepileptic efficacy with reduced motor side effects in patients.

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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, Quality Control of 1,4-Diaminobutane dihydrochloride, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 333-93-7, Name is 1,4-Diaminobutane dihydrochloride, molecular formula is C4H14Cl2N2. In an article, author is Fernandes, Gracieli,once mentioned of 333-93-7.

A rapid method based on continuous-flow microwave-assisted extraction and online single drop microextraction was first developed and applied to the determination of amide herbicides in rice. The present method has the advantages of both continuous-flow microwave-assisted extraction and online single drop microextraction, which combines extraction, separation, preconcentration, and sample introduction in one step. By continuous-flow microwave-assisted extraction, analytes were first extracted from the rice samples using 15% methanol-water, and then concentrated into single drop. The microdrop was retracted into microsyringe and directly analyzed by gas chromatography with mass spectrometry without any filtration or clean-up process. The method greatly simplifies the sample treatment procedure, reduces consumption of toxic organic solvent, and extends the application of single drop microextraction to complex solid samples. Several parameters were optimized by Box-Behnken design. Under optimal experimental conditions, good linearity was observed in the range of 2.0-500.0 mu g/kg. The limits of detection and quantification were in the range of 0.3-1.5 and 1.1-5.1 mu g/kg, respectively. The intra- and inter-day precisions were between 1.9 and 4.8%. The present method was used to the analysis of real rice samples, and the recoveries of analytes were between 80.3 and 102.3% with the relative standard deviations ranging from 1.1 to 6.9%.

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

Reactions catalyzed within inorganic and organic materials and at electrochemical interfaces commonly occur at high coverage and in condensed media, causing turnover rates to depend strongly on interfacial structure and composition, 6000-43-7, Name is Glycine hydrochloride, SMILES is Cl.NCC(O)=O, in an article , author is Alsanafi, Mariam, once mentioned of 6000-43-7, SDS of cas: 6000-43-7.

Salt effects on the solubility of uncharged polymers in aqueous solutions are usually dominated by anions, while the role of the cation with which they are paired is often ignored. In this study, we examine the influence of three aqueous metal iodide salt solutions (LiI, NaL and CsI) on the phase transition temperature of poly(N-isopropylacrylamide) (PNIPAM) by measuring the turbidity change of the solutions. Weakly hydrated anions, such as iodide, are known to interact with the polymer and thereby lead to salting-in behavior at low salt concentration followed by salting-out behavior at higher salt concentration. When varying the cation type, an unexpected salting-out trend is observed at higher salt concentrations, Cs+ > Na+ > Li+. Using molecular dynamics simulations, it is demonstrated that this originates from contact ion pair formation in the bulk solution, which introduces a competition for iodide ions between the polymer and cations. The weakly hydrated cation, Cs+, forms contact ion pairs with I- in the bulk solution, leading to depletion of CsI from the polymer-water interface. Microscopically, this is correlated with the repulsion of iodide ions from the amide moiety.

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

Electric Literature of 140-95-4, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 140-95-4, Name is N,N’-Bis(hydroxymethyl)urea, SMILES is O=C(NCO)NCO, belongs to amides-buliding-blocks compound. In a article, author is Miao, Lingzhan, introduce new discover of the category.

In 2007 the members of the ACS Green Chemistry Institute (R) Pharmaceutical Roundtable assembled a list of key green chemistry research areas to both identify transformations that would benefit from improvements in process greenness and to encourage academic research to this end. The list provided the topics for a review of the literature, published in 2007 in the journal Green Chemistry. As part of the 10th anniversary of the founding of the Roundtable in 2015, the membership revisited the list. This article discusses the selection of the revised list, the updated 10 key green chemistry research areas, 2 solvent themes and the emerging area of medium molecules that resulted from the exercise.

Electric Literature of 140-95-4, 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 140-95-4.

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

Let’s face it, organic chemistry can seem difficult to learn, Formula: C13H13N, Especially from a beginner’s point of view. Like 91-00-9, Name is Diphenylmethanamine, molecular formula is amides-buliding-blocks, belongs to amides-buliding-blocks compound. In a document, author is Fischer, Thorsten, introducing its new discovery.

Polyacrylonitrile nanoparticles grafted on ethylene diamine functionalized partially reduced graphene oxide (PAN-PRGO) was prepared via in situ emulsion polymerization and was further modified to contain amidoxime, amdinoethylene diamine, and carboxylic groups on the surface of the graphene nanosheets via partial hydrolysis of the nitrile groups on the polymer chains of the composite using (4% NaOH, 20 min) (HPAN-PRGO). The properties and morphologies of the prepared composites were compared through FTIR, UV-Vis, Raman spectra, XRD, SEM, TEM, and XPS analysis. The results revealed that polyacrylonitrile nanoparticles were grafted on the surface of the aminated graphene oxide nanosheets via the reaction between the free amino groups of the ethylene diamine modified graphene oxide nanosheets and nitrile groups of acylonitrile (AN). The obtained HPAN-PRGO composite was evaluated for its chelating property with Hg(II) ions. The effect of initial pH, initial concentration of the Hg(II), adsorbent dose, and contact time on the extraction of Hg(II) ions using HPAN-PRGO were investigated. The adsorption experiments indicated that HPAN-PRGO exhibits higher affinity toward Hg(II). The maximum uptake capacity for the extraction of Hg(II) ions on HPAN-PRGO was 324.0 mg/g at pH 5. The HPAN-PRGO shows a 100% removal of Hg(II) at concentrations up to 50 ppm, and the adsorption is exceptionally rapid showing more than 80.0% removal within 15 min and 100.0% of q(e) within 1.5 h at 800 ppm concentration. The Langmuir isotherm model and pseudo-second-order kinetic model have showed good fitness with the practical data. The XPS analysis of HPAN-PRGO before and after adsorption revealed the chelation adsorption mechanism between mercury and amine, amide, amidoxime, and carboxylic groups. After six adsorption-desorption cycles, the HPAN-PRGO could retain more than 90.0% of its original adsorption capacity. These results confirmed that HPAN-PRGO has exceptional performance for the removal of Hg(II) from wastewater. [GRAPHICS] .

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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. 2835-81-6, Name is H-DL-Abu-OH, molecular formula is C4H9NO2. In an article, author is Cheng, Jun-Kee,once mentioned of 2835-81-6, Recommanded Product: H-DL-Abu-OH.

The new original method of the synthesis of N-[difluoro(methyl)silyl]methylcarboxamides and related compounds based on the reaction of alkylation of N-trimethylsilyl derivatives by bifunctional silane ClCH2SiF2Me was use to prepare of N-{[difluoro(methyl)silyl]methyl}-N-methylacetamide, N-{[difluoro-(methyl)silyl]methyl}benzanilide and phenyl-N-phenyl-N-{[difluoro(methyl)silyl]methyl}carbamate. The structures of these compounds confirmed by NMR, FTIR and X-ray analysis. According to X-ray analysis data the lengths of coordination bonds C=O -> Si in studied compounds are 1.969, 2.000 and 2.176 angstrom respectively. The lengths of Si-F-ax. comprise 1.686, 1.661 and 1.632 angstrom respectively. QTAIM analysis was used to estimate the energy of co-ordination bond C=O -> Si in these amides. Calculated data shows that its value varies within 14-30 kcal/mol that close to the energy of co-ordination bond in some metalcomplexes. (C) 2020 Elsevier B.V. All rights reserved.

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

Reference of 6027-13-0, Enzymes are biological catalysts that produce large increases in reaction rates and tend to be specific for certain reactants and products. 6027-13-0, Name is (S)-2-Amino-4-mercaptobutanoic acid, SMILES is N[C@@H](CCS)C(O)=O, belongs to amides-buliding-blocks compound. In a article, author is Trache, Djalal, introduce new discover of the category.

Here, we present a thorough theoretical study of the adsorption of acrolein (ACO), acrylonitrile (ACN), and acrylamide (ACA) on Cu(100) surface. For this purpose, we have used the density functional theory, imposing periodic boundary conditions to have a correct description of the electronic band structure of the metal and including dispersion forces through two different schemes: the D2 method of Grimme and the vdW-DF. We have found several adsorption geometries. In all of them, the vinyl group together with the amide (in ACA), ciano (in ACN), and carbonyl (in ACO) groups, is highly involved. The highest adsorption energy is found for acrylamide, followed by acrolein and the lowest for acrylonitrile (depending on the level of theory employed 1.0, and 0.9 eV, respectively). We show that a strong coupling between the pi electronic system (both occupied and virtual orbitals) and the electronic levels of the metal is mainly responsible of the chemisorption. As a consequence, electronic density is transferred from the surface to the molecule, whose carbon atoms acquire a partial sp(3) hybridization. Lone-pair orbitals of the cyano, amide, and carbonyl groups also play a role in the interaction. The simulations and following analysis allow to disentangle the nature of the interaction, which can be explained on the basis of a simple chemical picture: donation from the occupied lone pair and pi orbitals of the molecule to the surface and backdonation from the surface to the pi* orbital of the molecule (pi-backbonding).

Reference of 6027-13-0, 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 6027-13-0 is helpful to your research.

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