Category: chlorides-buliding-blocks

Carreras, Javier published the artcileExploiting the π-acceptor properties of carbene-stabilized phosphorus centered trications [L₃P] ³⁺: applications in Pt(II) catalysis, Computed Properties of 849052-15-9, the publication is Journal of the American Chemical Society (2012), 134(40), 16753-16758, database is CAplus and MEDLINE.

2-Ethynylbiaryls undergo 6-endo-dig cyclization into annulated phenanthrenes and helicenes, catalyzed by platinum complex with electron-accepting tricationic cyclopropenylium phosphine, [(Me₂N)₂C₃⁺]₃P (1), [[(Me₂N)₂C₃⁺]₃PPtCl₃][ClO₄]₂ (3). The complex 3 is a bench-stable compound, easily available from reaction of K₂PtCl₄ with 1; the complex 3 is an excellent catalyst for cyclization of 2-ethynylbiaryls, when activated by Ag[CB₁₁H₆Cl₆]. Complexation of platinum complex (3) with alkyne is approx. 6 kcal mol^-1 more favorable, than with triphenylphosphine analog [(PPh₃)PtCl₃]^–. This constitutes the first example ever reported of using a P₁-centered trication as ligand in catalysis. The strong π-acceptor character of 1 that derives from its three pos. charges substantially increases the intrinsic π-acidity of Pt in complex 1·PtCl₂ and dramatically enhances its ability to activate π-systems toward nucleophilic attack. As a consequence, a remarkable acceleration of the model transformation is observed when compared with other classical π-acceptor ligands such as P(OPh)₃ or P(C₆F₅)₃. Moreover, the employment of 1 as ligand also expands the scope of this reaction to previously inaccessible substitution patterns. Kinetic studies and deuterium labeling experiments as well as d. functional theory (DFT) calculations were performed in order to explain these findings.

Journal of the American Chemical Society published new progress about 849052-15-9. 849052-15-9 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Boronic acid and ester,Benzene,Ether,Boronic Acids,Boronic Acids,Boronic acid and ester,, name is (4-((2-Chlorobenzyl)oxy)-3,5-dimethylphenyl)boronic acid, and the molecular formula is C15H16BClO3, Computed Properties of 849052-15-9.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Patil, A. A. published the artcileMeasurement of critical micelle concentration of some technical grade non-ionic detergents in presence of chloramine-T using dye solubilization technique, Safety of Sodium chloro(tosyl)amide trihydrate, the publication is Research Journal of Chemistry and Environment (2011), 15(2), 658-660, database is CAplus.

Com. available tech. grade non-ionic surfactants usually contain impurities and have a broad distribution of mol. weight owing to degree of ethoxylation. It has been shown that the surface tension method (Wilhelmy plate) is very sensitive if impurities are present in surfactant. Much lower CMC values are obtained for tech. grade surfactants with the surface tension method than with the dye solubilization method. The CMC determined by dye solubilization technique are in fair agreement with the values obtained by other available methods. The change in critical micellar concentration of Triton X-100 and Triton X-114 has been studied through the influence of additive Chloramine-T in aqueous medium by measuring the absorbance of the pure surfactant and with Chloramine-T in presence of water insoluble dye Orange-OT by using dye solubilization technique. The absorbance was found to increase with increased concentration of pure surfactant Triton X-100 and Triton X-114. The absorbance of the mixed systems with Chloramine-T also shows the same trend. The CMC of pure surfactant get decreased with increased concentration of additive Chloramine-T. The influence of additive Chloramine-T on the absorbance of Triton X-100 and Triton X-114 is clear indication that the phenomenon of dye micellization is associated with the different micelles coalescing.

Research Journal of Chemistry and Environment published new progress about 7080-50-4. 7080-50-4 belongs to chlorides-buliding-blocks, auxiliary class Halogenation Reagent,Inhibitor, name is Sodium chloro(tosyl)amide trihydrate, and the molecular formula is C7H13ClNNaO5S, Safety of Sodium chloro(tosyl)amide trihydrate.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Patil, A. A. published the artcileMeasurement of critical micelle concentration of technical grade non-ionic detergent in presence of chloramine-T using dye solubilization technique, HPLC of Formula: 7080-50-4, the publication is Oriental Journal of Chemistry (2011), 27(2), 753-756, database is CAplus.

Com. available tech. grade non-ionic surfactants usually contain impurities and have a broad distribution of mol. weight owing to degree of ethoxylation. It has shown that the surface tension method (Wilhelmy plate) is very sensitive if impurities are present in the surfactant. Much lower CMC values are obtained for tech. grade surfactants with the surface tension method than with the dye solubilization method. The CMC determined by the dye solubilization technique are in fair agreement with the values obtained by other available methods. The change in CMC of Tween-40 has been studied through the influence of additive Chloramine-T in aqueous medium by measuring the absorbance of the pure surfactant and with Chloramine-T in presence of the water-insoluble dye Orange-OT by using the dye solubilization technique. The absorbance was increased with increasing concentration of pure Tween-40. The absorbance of the mixed systems with Chloramine-T shows the same trend. The CMC of pure surfactant was decreased with increasing concentration of Chloramine-T. The influence of Chloramine-T on the absorbance of Tween-40 is a clear indication that the phenomenon of dye micellization is associated with the different micelles coalescing.

Oriental Journal of Chemistry published new progress about 7080-50-4. 7080-50-4 belongs to chlorides-buliding-blocks, auxiliary class Halogenation Reagent,Inhibitor, name is Sodium chloro(tosyl)amide trihydrate, and the molecular formula is C7H13ClNNaO5S, HPLC of Formula: 7080-50-4.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Modak, Atanu published the artcilePalladium-Catalyzed Remote meta-Selective C-H Bond Silylation and Germanylation, Synthetic Route of 243139-71-1, the publication is Organometallics (2017), 36(13), 2418-2423, database is CAplus.

Selective meta-C-H activation of arenes until date has met with a limited number of functionalizations. Expanding the horizon of meta-C-H functionalization, herein the authors disclose an unprecedented meta-silylation and germanylation protocol by employing a simple nitrile based directing template. Longer linker between the target site and the directing template were successfully explored for meta-silylation (sp²ε and sp²ζ). Addnl., synthetic utility was demonstrated with several postsynthetic elaborations and with a formal synthesis of TAC101, a promising drug for the treatment of lung cancer.

Organometallics published new progress about 243139-71-1. 243139-71-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Benzyl chloride,Benzene, name is 2,4,5-Trifluorobenzyl chloride, and the molecular formula is C7H4ClF3, Synthetic Route of 243139-71-1.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Papastavrou, Argyro T. published the artcileUnprecedented Multicomponent Organocatalytic Synthesis of Propargylic Esters via CO₂ Activation, Application of 1-(Chloromethyl)-4-(trifluoromethyl)benzene, the publication is ChemCatChem (2019), 11(21), 5379-5386, database is CAplus.

An efficient and straightforward organocatalytic method for the direct, multicomponent carboxylation of terminal alkynes with CO₂ and organochlorides, towards propargylic esters, is reported for the first time. 1,3-Di-tert-butyl-1H-imidazol-3-ium chloride, a simple, widely-available, stable, and cost-efficient N-heterocyclic carbene (NHC) precursor salt was used as the (pre)catalyst. A wide range of phenylacetylenes, bearing electron-withdrawing or electron-donating substituents, react with allyl chlorides, benzyl chlorides, or 2-chloroacetates, providing the corresponding propargylic esters in low to excellent yields. DFT calculations on the mechanism of this transformation indicate that the reaction is initiated with the formation of an NHC-carboxylate, by addition of the carbene to a mol. of CO₂. Then, the nucleophilic addition of this species to the corresponding chlorides has been computed to be the rate limiting step of the process.

ChemCatChem published new progress about 939-99-1. 939-99-1 belongs to chlorides-buliding-blocks, auxiliary class Fluoride,Chloride,Benzyl chloride,Benzene, name is 1-(Chloromethyl)-4-(trifluoromethyl)benzene, and the molecular formula is C8H6ClF3, Application of 1-(Chloromethyl)-4-(trifluoromethyl)benzene.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Busch, Brett B. published the artcileThe Boron-Catalyzed Polymerization of Dimethylsulfoxonium Methylide. A Living Polymethylene Synthesis, Computed Properties of 5034-06-0, the publication is Journal of the American Chemical Society (2002), 124(14), 3636-3646, database is CAplus and MEDLINE.

Trialkyl and aryl organoboranes catalyze the polymerization of dimethylsulfoxonium methylide (1). The product of the polymerization is a tris-polymethylene organoborane. Oxidation affords linear telechelic α-hydroxy polymethylene. The polymer mol. weight was found to be directly proportional to the stoichiometric ratio of ylide/borane, and polydispersities as low as 1.01-1.03 have been realized. Although oligomeric polymethylene has been the most frequent synthetic target of this method, polymeric star organoboranes with mol. weights of 1.5 million have been produced. The average turnover frequency at 120° in 1,2,4,5-tetrachlorobenzene/toluene is estimated at >6 × 10⁶ g of polymethylene (mol boron)^-1 h^-1. The mechanism of the polyhomologation reaction involves initial formation of a zwitterionic organoborane-ylide complex which breaks down in a rate-limiting 1,2-alkyl group migration with concomitant expulsion of a mol. of DMSO. The reaction was found to be first order in the borane catalyst and zero order in ylide. DMSO does not interfere with the reaction. The temperature dependence of the reaction rate yielded the following activation energy parameters (toluene, ΔH^⧧ = 23.2 kcal/mol, ΔS^⧧ = 12.6 cal deg/mol, ΔG^⧧ = 19.5 kcal/mol; THF, ΔH^⧧ = 26.5 kcal/mol, ΔS^⧧ = 21.5 cal deg/mol, ΔG^⧧ = 20.1 kcal/mol).

Journal of the American Chemical Society published new progress about 5034-06-0. 5034-06-0 belongs to chlorides-buliding-blocks, auxiliary class Salt,Aliphatic hydrocarbon chain, name is trimethyloxosulphonium chloride, and the molecular formula is C3H9ClOS, Computed Properties of 5034-06-0.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Schnitzer, Tobias published the artcilePeptide-metal frameworks with metal strings guided by dispersion interactions, Safety of 2-Chlorotrityl chloride, the publication is Journal of the American Chemical Society (2021), 143(2), 644-648, database is CAplus and MEDLINE.

Despite impressive advances in the construction of metal-organic frameworks (MOFs), the formation of networks from peptidic ligands is difficult, though they are sought after for their modularity and biocompatibility. Herein the authors present a peptide-metal framework that consists of helical oligoproline ligands and Zn/K (or Zn/Rb). The crystalline network contains pleated nanosheets with the metal ions aligned in strings. This unprecedented architecture derives from under-appreciated London dispersion interactions between the oligoproline ligands that play in concert with the metal coordination to create the network. Hence, the secondary structure of the peptidic ligand represents an addnl. control element for the creation of new MOF architectures. The authors anticipate that the authors′ results will instruct the design of further peptidic MOFs and enable the generation of versatile biocompatible materials.

Journal of the American Chemical Society published new progress about 42074-68-0. 42074-68-0 belongs to chlorides-buliding-blocks, auxiliary class Chloride,Benzyl chloride,Benzene, name is 2-Chlorotrityl chloride, and the molecular formula is C19H14Cl2, Safety of 2-Chlorotrityl chloride.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Biswas, Sourish published the artcileNickel-catalyzed insertions of vinylidenes into Si-H bonds, Quality Control of 866-23-9, the publication is Chemical Communications (Cambridge, United Kingdom) (2020), 56(91), 14175-14178, database is CAplus and MEDLINE.

A nickel-catalyzed reductive cyclization of 1,1-dichloroalkenyl silanes is reported. The products of this reaction are unsaturated five- or six-membered silacycles. Intermol. variants are also described, providing access to trisubstituted vinyl silanes that are not accessible by alkyne hydrosilylation or sila-Heck-type processes. A variety of silanes can be utilized, including those that serve as nucleophilic partners in Hiyama cross-coupling reactions. Mechanistic studies using deuterium-labeled silanes are described.

Chemical Communications (Cambridge, United Kingdom) published new progress about 866-23-9. 866-23-9 belongs to chlorides-buliding-blocks, auxiliary class Aliphatic Chain, name is Diethyltrichloromethylphosphonate, and the molecular formula is C5H10Cl3O3P, Quality Control of 866-23-9.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Demchuk, B. N. published the artcileEffect of antimicrobial drugs on thermogenesis in yeastlike fungi and Staphylococci, Related Products of chlorides-buliding-blocks, the publication is Antibiotiki (Moscow) (1976), 21(3), 222-6, database is CAplus and MEDLINE.

At concentrations >9.8 × 10-4 μg/ml, levorin [11014-70-3] induced gradual decreases in heat production by Candida albicans. Decamethoxin [38146-42-8] had a similar effect in C. albicans. In Staphylococcus aureus, it decreased heat production at 9.8 × 10-4-3.9 × 10-3 μg/ml, then increased it at higher concentrations Both compounds completely inhibited heat production at ≥1 μg/ml.

Antibiotiki (Moscow) published new progress about 38146-42-8. 38146-42-8 belongs to chlorides-buliding-blocks, auxiliary class Achiral Phase-Transfer Catalysts, name is N1,N10-Bis(2-((2-isopropyl-5-methylcyclohexyl)oxy)-2-oxoethyl)-N1,N1,N10,N10-tetramethyldecane-1,10-diaminium chloride, and the molecular formula is C38H74Cl2N2O4, Related Products of chlorides-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics

Neporada, V. P. published the artcileEffect of decamethoxin on diphtheria bacteria and their sensitivity to antibiotics, Product Details of C38H74Cl2N2O4, the publication is Antibiotiki (Moscow) (1972), 17(5), 445-9, database is CAplus and MEDLINE.

Of 216 strains of diphtheria bacilli tested, 55.3% were sensitive to the bactericidal effect of decamethoxine (I) [38146-42-8] at 0.5-2 μg/ml; 1 strain was sensitive to 0.01 μg/ml and 6 were sensitive to 8 μg/ml. The 2 bacillus types isolated were equally sensitive to I. These organisms were also highly sensitive to erythromycin [114-07-8], neomycin [1404-04-2], monomycin [7542-37-2], levomycetin [56-75-7], and penicillin [1406-05-9]. The dehydrogenase [9035-82-9] activity of diphtheria bacilli was inhibited by bacteriostatic doses of I but was enhanced by subbacteriostatic doses.

Antibiotiki (Moscow) published new progress about 38146-42-8. 38146-42-8 belongs to chlorides-buliding-blocks, auxiliary class Achiral Phase-Transfer Catalysts, name is N1,N10-Bis(2-((2-isopropyl-5-methylcyclohexyl)oxy)-2-oxoethyl)-N1,N1,N10,N10-tetramethyldecane-1,10-diaminium chloride, and the molecular formula is C38H74Cl2N2O4, Product Details of C38H74Cl2N2O4.

Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics