Tag: M.W=100-150

Priya, V.; Subalakshmi, M. published the artcile< Study of oxidation of dyes by N-chlorosuccinimide in aqueous acetic acid medium: A kinetic and mechanistic>, SDS of cas: 128-09-6, the main research area is dye chlorosuccinimide acetic acid medium oxidation kinetic.

Kinetics of oxidation of Dyes by N-Chlorosuccinamide(NCS) in acetic acid medium has been done in the presence of hydrochloric acid. The reaction follows first order kinetics with respect to both [NCS], [Substrate] and [HCl]. Increases in ionic strength increases the rate and addition of the reaction product succinamide has a slight retarding effect on the reaction rate. Increase in the dielec. constant of the medium decreases the rate. Activation parameters have been evaluated from Arrhenius plot by studying the reaction at different temperature [40-55 oC] and oxidation products are identified. A most probable reaction mechanism is proposed and an appropriate rate law is deduced to account for the observed kinetic data.

International Journal of Chemical Studies published new progress about Activation energy. 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, SDS of cas: 128-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Franchini, Davide; Dapiaggi, Federico; Pieraccini, Stefano; Forni, Alessandra; Sironi, Maurizio published the artcile< Halogen bonding in the framework of classical force fields: The case of chlorine>, Recommanded Product: 1-Chloro-3,5-difluorobenzene, the main research area is aryl chloride alanine halogen bonding Van der Waals force.

Halogen bonding is nowadays a consolidated tool in chem. Only recently, the importance of halogen bonding has been demonstrated also in biol. systems, owing to the presence of halogens in drugs. This interaction is due to the anisotropy of the electron d. around the halogen that leads to the formation of the ‘σ-hole’, which is responsible for the interaction with a nucleophile site. Unfortunately, classical force fields used in the study of ligand-receptor systems are not able to describe the ‘σ-hole’. Here, we propose a pseudo-atom based methodol. able to correctly describe halogen bonding involving chlorine using classical force field.

Chemical Physics Letters published new progress about Aryl chlorides Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, Recommanded Product: 1-Chloro-3,5-difluorobenzene.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Prabhakar, Virupakshi; Babu, Kondra Sudhakar; Ravindranath, L. K. published the artcile< Design and facile method for synthesis of novel 1,3,4-oxadiazole derivatives by using Biginelli reaction>, Quality Control of 672948-03-7, the main research area is oxadiazole preparation; tetrahydropyrimidine carbohydrazide carboxylic acid Biginelli reaction.

An efficient synthesis of 3,4-dihydropyrimidinones I from the thieno[2,3-d]pyrimidine-6-carboxaldehyde, Et 2-acetoacetate and urea in ethanol, using zirconium tetrachloride as the catalyst is described. A new series of 6-methyl-4-(thieno[2,3-d]pyrimidin-6-yl)-5-(5-p-substituted-1,3,4-oxadiazol-2-yl)-3,4-dihydropyrimidin-2(1H)-one derivatives II (R = C6H5, pyridin-4-yl, furan-2-yl, etc.) was synthesized after refluxing 6-methyl-2-oxo-4-(thieno[2,3-d]pyrimidin-6-yl)-1,2,3,4-tetrahydropyrimidine-5-carbohydrazide with different aromatic/heterocyclic carboxylic acids RC(O)OH in the presence of POCl3.

Heterocyclic Letters published new progress about Aromatic carboxylic acids Role: RCT (Reactant), RACT (Reactant or Reagent). 672948-03-7 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H3NO3, Quality Control of 672948-03-7.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Ivanova, Yu. B.; Chizhova, N. V.; Khrushkova, Yu. V.; Rusanov, A. I.; Mamardashvili, N. Zh. published the artcile< Synthesis, Spectral, and Coordination Properties of Halogen-Substituted Tetraarylporphyrins>, Application In Synthesis of 128-09-6, the main research area is chloro bromo tetraarylporphyrin cobalt preparation spectrum coordination kinetics acidity.

2,3,7,8,12,13,17,18-Octabromo-5,10,15,20-tetra(4-chlorophenyl)porphyrin and 2,3,7,8,12,13,17,18-octachloro-5,10,15,20-tetra(4-bromophenyl)porphyrin were synthesized. The obtained compounds were identified by electronic absorption and 1H NMR spectroscopy as well as mass spectrometry. The complex-forming properties of the synthesized porphyrins in the Zn acetate(II)-MeCN system at 278-298 K were studied. Kinetic parameters of the formation of the corresponding Zn complexes in MeCN were determined

Russian Journal of General Chemistry published new progress about Acidity. 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Application In Synthesis of 128-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Yu, Xiao-Long; Kuang, Liping; Chen, Su; Zhu, Xiao-Long; Li, Zhong-Liang; Tan, Bin; Liu, Xin-Yuan published the artcile< Counteranion-Controlled Unprecedented Diastereo- and Enantioselective Tandem Formal Povarov Reaction for Construction of Bioactive Octahydro-Dipyrroloquinolines>, SDS of cas: 29027-20-1, the main research area is metal phosphate catalyst counteranion stereoselective tandem formal Povarov reaction; octahydro dipyrroloquinoline stereoselective preparation antiproliferative activity.

The asym. inverse-electron-demand hetero-Diels-Alder (IEHDA) reactions of imines and dienophiles have emerged as an attractive tool for derivatizing optically active complex azaheterocycles. In comparison, such reactions involving iminium ions remain great challenges because of low association of iminium ions with neutral catalytic centers. To overcome this, we report a metal-phosphate-catalyzed asym. tandem hydroamination/formal Povarov reaction of secondary aminoalkynes via a chiral counteranion-controlled iminium ion intermediate strategy. Critical to the success of this challenging strategy was chiral phosphate as an ion pair to achieve counteranion-controlled asym. reaction of in situ-generated iminium ions. This method enables a convenient, powerful, and atom-economical access to tetracyclic octahydro-dipyrroloquinoline frameworks bearing multiple contiguous stereogenic centers in good yields with diastereo- and enantioselectivities, from acyclic starting materials, and the catalyst loadings could be as low as 1 mol %. The asym. cross-coupling reaction of different aminoalkynes has further been demonstrated with good results. Furthermore, this methodol. was applied to enantioselective synthesis of incargranine B aglycon epimer in only two steps. The reaction is demonstrated to proceed through a stepwise process for formal Povarov reaction.

ACS Catalysis published new progress about Alkynyl compounds, alkynyl amines Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 29027-20-1 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H8ClN, SDS of cas: 29027-20-1.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Kesavan, Arunachalam; Anbarasan, Pazhamalai published the artcile< Catalytic enantioselective oxysulfenylation of o-vinylanilides>, Electric Literature of 128-09-6, the main research area is thio tethered benzoxazine preparation; vinylanilide imide catalytic enantioselective oxysulfenylation.

Tf2NH-Assisted BINAM-derived thiophosphoramide catalysis was accomplished for the enantioselective oxysulfenylation of o-vinylanilides with N-(aryl/alkylthio)imides. The developed reaction offered access to diverse substituted aryl/alkylthio tethered 3,1-benzoxazines I [R = 6-MeO, 6-Cl, 7-Cl, 8-MeO, 8-BzO; R1 = Ph, 4-EtC6H4, 4-FC6H4, etc.; Ar = Ph, Bn, 2-MeC6H4, etc.; Ar1 = Ph, 4-MeC6H4, 3-IC6H4, etc.] in excellent yields and enantiomeric ratios. Furthermore, synthetic applications of benzoxazines and aryl/alkylthio moieties and a transition state model for the observed enantioselectivity were also discussed.

Chemical Communications (Cambridge, United Kingdom) published new progress about Anilides Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation) (o-vinylanilides). 128-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C4H4ClNO2, Electric Literature of 128-09-6.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Khadse, Saurabh C.; Chatpalliwar, Vivekananda A. published the artcile< Synthesis of benzamides by microwave assisted ring opening of less reactive dimethylaminobenzylidene oxazolone>, HPLC of Formula: 29027-20-1, the main research area is dimethylaminobenzylidene oxazolone amine microwave irradiation ring opening; benzamide preparation.

The synthesis of some benzamide compounds by microwave-assisted ring opening of 4-(4-dimethylaminobenzylidene)-2-phenyl-5-oxazolone was presented. By conventional synthesis involving heating, it was found difficult to obtain ring-opened products, probably due to poor tendency of the carbonyl carbon (C5) of oxazolone derivative to undergo nucleophilic attack by mono/or disubstituted anilines. Microwave assisted reactions were easy to perform, have reduced the reaction time and produced good yields.

Arabian Journal of Chemistry published new progress about Benzamides Role: SPN (Synthetic Preparation), PREP (Preparation). 29027-20-1 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H8ClN, HPLC of Formula: 29027-20-1.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Abraham, Raymond J.; Cooper, M. Ashley published the artcile< A re-investigation of 4JFF and 5JFF nuclear spin-spin couplings in substituted benzenes, a novel conformational tool>, Quality Control of 1435-43-4, the main research area is benzene nuclear spin coupling B3LYP.

A theor. anal. of the 4JFF and 5JFF couplings in fluorobenzenes separates the σ and π components of the substituent coefficients The π bond mechanism is dominant but the σ bond mechanism must be included to give accurate values of the couplings. For monosubstituted difluorobenzenes the 4JFF and 5JFF couplings can be predicted from the calculated π densities by linear equations. The use of additive substituent effects allows the prediction of the meta4JFF couplings for multisubstituted compounds The π dependence of the 4JFF coupling in 2,6-difluorobenzenes provides a novel and simple method of determining the torsional angle of the C1 substituent and the benzene ring for non-sym. functional groups (acetyl, carboxymethyl, dimethylamino, amide, nitro etc.). This could be used to determine the geometries of such mols. in biol. systems. The π dependence of the 4JFF coupling is also of importance in the charged species of 2,6-difluoroanilinium (4JFF 2.1 Hz) and 2,6-difluoro-N,N,N-trimethylanilinium (4JFF 0.0 Hz) due to the very different π electron densities.

Physical Chemistry Chemical Physics published new progress about Bond angle, torsional. 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, Quality Control of 1435-43-4.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

Khadse, Saurabh C.; Talele, Gokul S.; Agrawal, Surendra S. published the artcile< Aminocarbonyl Arylvinylbenzamides as Gastric Sparing Anti-inflammatory Agents>, HPLC of Formula: 29027-20-1, the main research area is aminocarbonyl arylvinylbenzamide preparation antiinflammatory gastrotoxicity gastrointestinal ulcer hypermotility.

Some (E/Z)-aminocarbonyl arylvinylbenzamides (B1-B15) were synthesized, evaluated for anti-inflammatory activity and ulcerogenic tendency, and their effect on gastro-intestinal motility in the rats was studied. These benzamides comprising of aliphatic unsaturated region situated between two amide linkages were synthesized by nucleophilic ring opening of appropriate az-lactones (AZ1-AZ4) by suitable amines. The characterization of newly synthesized benzamides was performed by IR, 1H- and 13C-NMR, mass and elemental anal. Amongst the tested compounds, benzamide B1, B2, B4, B5, and B13 were able to produce comparable or superior anti-inflammatory activity at 10 and 20 mg/kg p.o. dose with respect to standard diclofenac in carrageenan induced rat paw edema model with lessened propensity to cause gastro-intestinal hypermotility and were found to have nil tendencies to generate gastric ulcers.

Archiv der Pharmazie (Weinheim, Germany) published new progress about Anti-inflammatory agents. 29027-20-1 belongs to class chlorides-buliding-blocks, and the molecular formula is C7H8ClN, HPLC of Formula: 29027-20-1.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics

El Hage, Krystel; Piquemal, Jean-Philip; Hobaika, Zeina; Maroun, Richard G.; Gresh, Nohad published the artcile< Approaching the double-faceted nature of the CX bond in halobenzenes with a bifunctional probe>, Product Details of C6H3ClF2, the main research area is halobenzene carbon halogen bond.

In halobenzenes, the CX bond (X = Cl, Br) is doubly faceted, electron-deficient along the CX direction, and electron-rich on its flanks. We have recently shown that both features could be enhanced by appropriate electron-withdrawing and electron-donating groups, resp. In this letter we further highlight this dual character by approaching a bifunctional probe, N-methylformamide, to both regions in representative substituted halobenzenes. We report the results of interaction energy computations, ELF, and NCI analyses. These methods used in conjunction show the responsiveness of the CX bond to both kinds of substitutions, enabling significant interaction energy gains with respect to the parent compound

Chemical Physics Letters published new progress about Aryl bromides Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), PROC (Process). 1435-43-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C6H3ClF2, Product Details of C6H3ClF2.

Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics