Tag: M.W=100-150

Srivastava, Shubhangi published the artcileExperimental investigation of CO₂ uptake in CO₂ hydrates formation with amino acids as kinetic promoters and its dissociation at high temperature, Name: (S)-2-Amino-4-(methylthio)butanoic acid, the publication is Scientific Reports (2022), 12(1), 8359, database is CAplus and MEDLINE.

The dissociation of CO2 gas hydrates (GH) with amino acid kinetic promoters and without promoters was studied at a high temperature of 90¡ãC for a period of 20 min to understand the percentage of CO2 gas and to select the best promoter that aids CO2 gas entrapment along with stability at a high temperature The possibility of using four hydrophobic food grade amino acids, namely cysteine, valine, leucine, and methionine, and one surfactant, lecithin, as kinetic promoters for CO2 GH has been studied. The amino acids were added 0.5 g (wt%), and lecithin was added 5 g for the GH production Furthermore, the amino acids leucine and methionine gave some pos. results, therefore, these amino acids were carried further for the experimentation purpose in the production of CO2 GH. Also, a combinational use of these amino acids was studied to investigate the effect on % CO2 retention in comparison to the normal GH. From the results, it was observed that the stability of GH decreases with an increase in temperature, but the addition of promoters, especially leucine + methionine + lecithin increased the CO2 uptake during GH formation.

Scientific Reports published new progress about 63-68-3. 63-68-3 belongs to catalysis-chemistry, auxiliary class Natural product, name is (S)-2-Amino-4-(methylthio)butanoic acid, and the molecular formula is C6H6N2O, Name: (S)-2-Amino-4-(methylthio)butanoic acid.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Wen, Ya-Ting published the artcileNi-Catalyzed Remote Radical/Cross-Electrophile Coupling Cascade for Selective C(sp³)-H Arylation, Name: 2-Methylbenzoic acid, the publication is Organic Letters (2022), 24(12), 2399-2403, database is CAplus and MEDLINE.

An innovative 1,5-HAT cascade strategy was advanced for the nickel-catalyzed distal arylation via cross-electrophile coupling. Through specific migration, the remote C(sp³)-H bond was regioselectively activated, and Ar-I as the available electrophile is used for the construction of the C(sp³)-C(sp²) bond. This method also has broad applicability for benzylic and aliphatic N-fluorocarboxamides with yields up to 80%. Furthermore, a series of control experiments demonstrated that this reaction was probably initiated by a radical process.

Organic Letters published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C15H14O, Name: 2-Methylbenzoic acid.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Elstner, R. published the artcileStudies on the effect of inhibitors in ammonia etching solutions on the depth and pattern in copper etching, Product Details of C3H8N2S, the publication is Metalloberflaeche (1982), 36(10), 468-78, database is CAplus.

The effects of inhibitors on the etching of Cu for printed circuits by ammoniacal solutions of Na chlorite and CuCl₂ were studied. The etch rates and elec. conductivity of the different solutions are given. The effects of Cu(I) ions are discussed. The optimum etching conditions are described.

Metalloberflaeche published new progress about 6972-05-0. 6972-05-0 belongs to catalysis-chemistry, auxiliary class Thiourea,Amine,Aliphatic hydrocarbon chain,Amide, name is 1,1-Dimethylthiourea, and the molecular formula is C3H8N2S, Product Details of C3H8N2S.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Miyamura, Hiroyuki published the artcileReaction Rate Acceleration of Cooperative Catalytic Systems: Metal Nanoparticles and Lewis Acids in Arene Hydrogenation, Product Details of C8H8O2, the publication is Angewandte Chemie, International Edition, database is CAplus and MEDLINE.

Employing two distinct catalysts in one reaction medium synergistically is a powerful strategy for activating less reactive substrates. Although the approach has been well-developed in homogeneous conditions, it remains challenging and rare in heterogeneous catalysis, especially under gas-liquid-solid multiphase reaction conditions. Here, authors describe the development of cooperative and synergistic catalyst systems of heterogeneous Rh-Pt bimetallic nanoparticle catalysts, Rh-Pt/DMPSi-Al₂O₃, and Sc(OTf)₃ in the liquid phase for the hydrogenation of arenes under very mild conditions. Dramatic rate acceleration was achieved with cooperative activation. Remarkably, more challenging substrates that contained strong electron-donating groups and sterically hindered substituents were smoothly hydrogenated. Mechanistic insights into the cooperative activation of an aromatic substrate by heterogeneous metal nanoparticles and a soluble Lewis acid was obtained by kinetic studies and by direct observation of ¹H and ⁴⁵Sc NMR spectra.

Angewandte Chemie, International Edition published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C8H8O2, Product Details of C8H8O2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Sarigueney, Ahmet Burak published the artcileSynthesis and Antimicrobial Activity of Some 2-aminothiazole and 2-aminothiadiazine Derivatives, Synthetic Route of 6972-05-0, the publication is Journal of Heterocyclic Chemistry (2018), 55(9), 2107-2110, database is CAplus.

A series of thiazoles I [R¹ = NH₂, NHMe, NMe₂, NHPh], bis-thiazole II [R¹ = NH₂], thiadiazines III and bis-thiadiazine IV [R¹ = NH₂] was synthesized from reaction of phenoxy chloroacetophenone with thioureas and thiosemicarbazides resp. The synthesized compounds I, II, III and IV were characterized by spectroscopic techniques and evaluated as potential antimicrobial agents. The synthesized compounds were evaluated for thier antibacterial activity by broth microdilution method and expressed as min. inhibitory concentration; against Escherichia coli, Salmonella typhimurium, Bacillus cereus, and Staphylococcus aureus. Results showed that compounds, I [R¹ = NHMe], II [R¹ = NH₂] and IV [R¹ = NH₂] were found to selectively inhibit Gram positives.

Journal of Heterocyclic Chemistry published new progress about 6972-05-0. 6972-05-0 belongs to catalysis-chemistry, auxiliary class Thiourea,Amine,Aliphatic hydrocarbon chain,Amide, name is 1,1-Dimethylthiourea, and the molecular formula is C3H8N2S, Synthetic Route of 6972-05-0.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Nuna, Nobumitsu published the artcileDetection of tetramethylthiuram disulfide and related compounds using the chemiluminescence of tris (2,2′-bipyridyl) ruthenium (III) cation, Related Products of catalysis-chemistry, the publication is Bunseki Kagaku (2003), 52(9), 763-767, database is CAplus.

The chemiluminescence (CL) of tris(2,2′-bipyridyl)ruthenium(III) cation was applied to the determination of tetramethylthiuram disulfide (TMTD). A sample was injected to an HPLC system with Chromolith Performance RP-18e. The eluted sample and CL reagent were mixed, and sent to a CL-detector. The detection limit of TMTD using the HPLC system was 0.15 pmol (S/N= 3). The calibration curve was linear over the injection amount range from 0.6 to 20 pmol. To improve the sensitivity of the CL method, the water that generated the background was removed from the system. As a result, the sensitivity was improved.

Bunseki Kagaku published new progress about 6972-05-0. 6972-05-0 belongs to catalysis-chemistry, auxiliary class Thiourea,Amine,Aliphatic hydrocarbon chain,Amide, name is 1,1-Dimethylthiourea, and the molecular formula is C3H8N2S, Related Products of catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Kim, Taelim published the artcileIdentification of novel estrogen receptor (ER) agonists that have additional and complementary anti-cancer activities via ER-independent mechanism, Category: catalysis-chemistry, the publication is Bioorganic & Medicinal Chemistry Letters (2016), 26(7), 1844-1848, database is CAplus and MEDLINE.

In this study, a series of bis(4-hydroxy)benzophenone oxime ether derivatives such as 12c, 12e and 12h were identified as novel estrogen receptor (ER) agonists that have addnl. and complementary anti-proliferative activities via ER-independent mechanism in cancer cells. These compounds are expected to overcome the therapeutic limitation of existing ER agonists such as estradiol and tamoxifen, which have been known to induce the proliferation of cancer cells.

Bioorganic & Medicinal Chemistry Letters published new progress about 6084-58-8. 6084-58-8 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is O-Isobutylhydroxylamine hydrochloride, and the molecular formula is C4H12ClNO, Category: catalysis-chemistry.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Ha, Eun Kyo published the artcilePersonal exposure to total VOC is associated with symptoms of atopic dermatitis in schoolchildren, Safety of 2-Methylbenzoic acid, the publication is Journal of Korean Medical Science (2022), 37(8), e63, database is CAplus and MEDLINE.

The urinary levels of volatile organic compound (VOC) metabolites provide individual exposure levels compared to data obtained by measuring these compounds in ambient air. We aimed to investigate the association between personal urinary concentrations of VOC metabolites and symptoms of atopic dermatitis in schoolchildren. Nine urinary VOC metabolites were analyzed from urine samples of 149 children. Diagnosis of atopic dermatitis was determined using standardized questionnaires. Pediatricians visited the schools and rated the severity of symptoms using the SCORing Atopic Dermatitis (SCORAD) in all children. Forty-five children (30.2%) had atopic dermatitis based on the International Study of Asthma and Allergies in Childhood (ISAAC) results and 35 children (23.8%) had symptoms of atopic dermatitis with pos. SCORAD index values (defined as SCORAD ¡Ý 5). Children with benzylmercapturic acid detected in personal urines were associated with presence of atopic dermatitis and pos. SCORAD index values. Children in the highest quartile of mandelic acid concentration were associated with presence of atopic dermatitis and pos. SCORAD results. Conclusion: Personal exposure to VOCs, as indicated by urinary levels of VOC metabolites, was associated with presence of atopic dermatitis and the SCORAD index value.

Journal of Korean Medical Science published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C8H8O2, Safety of 2-Methylbenzoic acid.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Daniel, Alyssa published the artcileAbraham model correlations for solute transfer into cyclopentanone, Product Details of C8H8O2, the publication is Physics and Chemistry of Liquids, database is CAplus.

Mole fraction solubilities have been measured for anthracene, benzoic acid, 4-tert-butylbenzoic acid, 3-chlorobenzoic acid, 2-hydroxybenzoic acid, 2-methylbenzoic acid, 3-methylbenzoic acid, 3-nitrobenzoic acid and pyrene dissolved in cyclopentanone at 298.15 K using either spectrophotometric or acid-base titrimetric methods. Results of our exptl. measurements, combined with published solubility data for several inorganic and organic gases, solubility data for several important crystalline pharmaceutical intermediates and activity coefficient data taken from the published literature, were used to derive Abraham model correlations for solute transfer into anhydrous cyclopentanone solvent from both water and from the gas phase. The derived Abraham model correlations back-calculate the observed exptl. data to within 0.10 log units (or less). Reported for the first time are solute descriptor values for several important pharmaceutical intermediates.

Physics and Chemistry of Liquids published new progress about 118-90-1. 118-90-1 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Natural product, name is 2-Methylbenzoic acid, and the molecular formula is C8H8O2, Product Details of C8H8O2.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia

Han, Hee Oon published the artcileDesign and synthesis of oxime ethers of ¦Á-acyl-¦Â-phenylpropanoic acids as PPAR dual agonists, Safety of O-Isobutylhydroxylamine hydrochloride, the publication is Bioorganic & Medicinal Chemistry Letters (2007), 17(4), 937-941, database is CAplus and MEDLINE.

Oxime ethers of ¦Á-acyl-¦Â-phenylpropanoic acids, e.g., I, were prepared to apply as PPAR¦Á and ¦Ã dual agonists. Among them, I proved to exhibit potent in vitro activities with EC₅₀ of 19 and 13 nM in PPAR¦Á and ¦Ã, resp. It showed better glucose lowering effects than rosiglitazone and ameliorated the lipid profile like plasma triglyceride in db/db mice model.

Bioorganic & Medicinal Chemistry Letters published new progress about 6084-58-8. 6084-58-8 belongs to catalysis-chemistry, auxiliary class Salt,Amine,Aliphatic hydrocarbon chain, name is O-Isobutylhydroxylamine hydrochloride, and the molecular formula is C4H12ClNO, Safety of O-Isobutylhydroxylamine hydrochloride.

Referemce:
https://courses.lumenlearning.com/boundless-chemistry/chapter/catalysis/,
Catalysis – Wikipedia