Tag: M.W=200-250

Kang, Kai published the artcileC(sp²)-C(sp²) Reductive Elimination from Well-Defined Diarylgold(III) Complexes, Product Details of C9H9F5Si, the publication is Organometallics (2017), 36(24), 4727-4740, database is CAplus.

Well-defined phosphine-ligated diarylgold(III) complexes cis-[Au(L)(Ar_F)(Ar’)(Cl)] were prepared and detailed kinetics of the C(sp²)-C(sp²) reductive elimination from these complexes were studied. The mechanism of the reductive elimination from complexes cis-[Au(L)(Ar_F)(Ar’)(Cl)] was further studied by theor. calculation The combination of exptl. and theor. results suggests that the biaryl reductive elimination from organogold(III) complexes cis-[Au(L)(Ar_F)(Ar’)(Cl)] proceeds through a concerted biaryl-forming pathway from the four-coordinated Au(III) metal center. These studies also disclose that the steric hindrance of the phosphine ligands plays a major role in promoting the biaryl-forming reductive elimination from diarylgold(III) complexes cis-[Au(L)(Ar_F)(Ar’)(Cl)], while electronic properties of these ligands have a much smaller effect. Furthermore, the complexes with more weakly electron-withdrawing aryl ligands undergo reductive elimination faster and the elimination rate is not sensitive to the polarity of the solvents.

Organometallics published new progress about 1206-46-8. 1206-46-8 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Trimethyl(perfluorophenyl)silane, and the molecular formula is C9H9F5Si, Product Details of C9H9F5Si.

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

Luo, Jinyun published the artcileThe organocatalytic synthesis of perfluorophenylsulfides via the thiolation of trimethyl(perfluorophenyl)silanes and thiosulfonates, Quality Control of 1206-46-8, the publication is Organic & Biomolecular Chemistry (2021), 19(42), 9237-9241, database is CAplus and MEDLINE.

The organic superbase t-Bu-P₄-catalyzed direct thiolation of trimethyl(perfluorophenyl)silanes and thiosulfonates was developed. Yields of perfluorophenylsulfides of up to 97% under catalysis of 5 mol% t-Bu-P₄ were achieved. This method was shown to provide an efficient way to construct the perfluorophenyl-sulfur bond under mild metal-free reaction conditions.

Organic & Biomolecular Chemistry published new progress about 1206-46-8. 1206-46-8 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is Trimethyl(perfluorophenyl)silane, and the molecular formula is C9H9F5Si, Quality Control of 1206-46-8.

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

Altoe, Antonio P. published the artcileIonophoric neutral diamides. Phenylenedioxydiacetamides, Quality Control of 5411-14-3, the publication is Quimica Nova (1984), 7(1), 4-6, database is CAplus.

o-C₆H₄(OCH₂CONRR¹)₂ [I, R = H, R¹ = H, Et, Bu, CMe₃, cyclopentyl, cyclohexyl, CH₂CH(OMe)₂, Ph, 1-naphthyl, CMe:CHCO₂Me, 2-AcC₆H₄; R = Et, R¹ = Et, Ph; R = Me, R¹ = CONHMe; NRR¹ = piperidino, morpholino] were prepared by treating o-C₆H₄(OH)₂ with BrCH₂CO₂Et in aqueous NaOH, chelating the diacid, and amidating. I, except I (R = H, R¹ = Ph, 1-naphthyl, CMe:CHCO₂Me, 2-AcC₆H₄) complexed alk. earth metals.

Quimica Nova published new progress about 5411-14-3. 5411-14-3 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2,2-(1,2-Phenylenebis(oxy))diacetic acid, and the molecular formula is C10H10O6, Quality Control of 5411-14-3.

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

Jansson, Mikael published the artcileEvaluation of micellar radii and counterion binding from self-diffusion coefficients as applied to ionic/zwitterionic mixed micellar systems, Application In Synthesis of 2016-56-0, the publication is Journal of Physical Chemistry (1988), 92(23), 6689-93, database is CAplus.

The radii of mixed ionic-zwitterionic micelles have been obtained from micellar self-diffusion data by taking intermicellar interactions into account via a kinetic theory of Brownian motion. Exptl. self-diffusion data of counterions, surfactants, and micellar aggregates were obtained for the complete composition interval for the systems (dodecyldimethylammonio)propanesulfonate (DDAPS)/Li dodecylsulfate and DDAPS/dodecylammonium acetate. A considerably different dependence of mixed micellar radius on composition was observed in the 2 systems. Aggregates containing the anionic amphiphile were found to be larger than the corresponding cationic mixed micelles throughout the complete composition interval. As a check for consistency, the micellar radii were used as input values in model calculations of fractional ion binding ratios. A good agreement was observed with exptl. ion association data.

Journal of Physical Chemistry published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C14H31NO2, Application In Synthesis of 2016-56-0.

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

Zhang, Shanxue published the artcileElectrochemical Benzylic C(sp³)-H Isothiocyanation, Related Products of catalysis-chemistry, the publication is Organic Letters (2022), 24(8), 1742-1746, database is CAplus and MEDLINE.

Selective C(sp³)-H isothiocyanation represents a significant strategy for the synthesis of isothiocyanate derivatives Herein, the authors report an electrochem. benzylic isothiocyanation in a highly chemo- and site-selective manner under external oxidant-free conditions. The high chemoselectivity is attributed to the facile in-situ isomerization of benzylic thiocyanates to isothiocyanates. Notably, the method exhibits high functional group compatibility and is suitable for late-stage functionalization of bioactive mols.

Organic Letters published new progress about 457-68-1. 457-68-1 belongs to catalysis-chemistry, auxiliary class Fluoride,Benzene, name is Bis(4-fluorophenyl)methane, and the molecular formula is C14H26O2, Related Products of catalysis-chemistry.

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

Ren, Jie published the artcileDesign, synthesis, and biological evaluation of oxazolidone derivatives as highly potent N-acylethanolamine acid amidase (NAAA) inhibitors, Formula: C15H14O3, the publication is RSC Advances (2017), 7(21), 12455-12463, database is CAplus.

N-Acylethanolamine-hydrolyzing acid amidase (NAAA) is a lysosomal enzyme that catalyzes the hydrolysis of endogenous fatty acid ethanolamides (FAEs), such as N-palmitoylethanolamide (PEA). PEA exhibits anti-inflammatory and analgesic activities by engaging peroxisome proliferator-activated receptor ¦Á (PPAR-¦Á). Preventing PEA degradation by inhibition of NAAA has been proposed as a novel strategy for the treatment of inflammation and pain. In the present study, we reported the discovery of the oxazolidone derivative as a novel scaffold for NAAA inhibitors, and studied the structure-activity relationship (SAR) by modification of the side chain and terminal lipophilic substituents. The results showed that the link chain length of C5, straight and saturated linkages were the preferred shape patterns for NAAA inhibition. Several nanomolar NAAA inhibitors were described, including 2f, 3h, 3i and 3j with IC₅₀ values of 270 nM, 150 nM, 100 nM and 190 nM, resp. Enzymic degradation studies suggested that 2f inhibited NAAA in a selective, noncompetitive and reversible pattern. Moreover, 2f showed high anti-inflammatory and analgesic activities after systemic and oral administration.

RSC Advances published new progress about 1860-58-8. 1860-58-8 belongs to catalysis-chemistry, auxiliary class Carboxylic acid,Benzene,Ether, name is 2-(3-(Benzyloxy)phenyl)acetic acid, and the molecular formula is C15H14O3, Formula: C15H14O3.

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

Sibi, Mukund P. published the artcileNitrogen-15 nuclear magnetic resonance spectroscopy. Natural-abundance nitrogen-15 chemical shifts of ring-methylated N,N-dimethylanilines. Effect of inhibition of conjugation, Safety of 2,6-Diisopropyl-N,N-dimethylaniline, the publication is Journal of Organic Chemistry (1977), 42(18), 2999-3004, database is CAplus.

The 15N chem. shifts of PhNHMe, PhNMe2 (I), several ring-alkylated derivatives of I, and their conjugate acids were determined at the natural abundance level. Relative to aniline, N-methylation induced upfield shifts, in contrast to the downfield shifts expected on ¦Á-substitution. The influence of ring-Me substitution on the resonance position of PhNMe2 was the same as that reported for aniline, except for o-substitution. Under these conditions, considerably larger upfield shifts were observed In contrast, the chem. shifts of the conjugate acids all lay within a 2-ppm range. The large diamagnetic shifts induced by o-Me substitution were attributed to the torsional distortion of the MeN group from the optimum conformation for N lone-pair delocalization. The results correlated with appropriate aniline 13C chem. shifts. and, especially, with the ionization potentials of the corresponding aniline ¦Ð orbitals, which are a measure of N lone-pair ¦Ð delocalization. The diamagnetic ¦Á effects could also be rationalized by this means. The N shifts of 2,6-diethyl- and 2,6-diisopropyl-N,N-dimethylaniline were used to estimate torsional angles of 77 and 80¡ã, resp.

Journal of Organic Chemistry published new progress about 2909-77-5. 2909-77-5 belongs to catalysis-chemistry, auxiliary class Amine,Benzene, name is 2,6-Diisopropyl-N,N-dimethylaniline, and the molecular formula is C5H10Cl3O3P, Safety of 2,6-Diisopropyl-N,N-dimethylaniline.

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

Jash, Apratim published the artcileTriggered release of hexanal from an imidazolidine precursor encapsulated in poly(lactic acid) and ethylcellulose carriers, Product Details of C16H20N2, the publication is Journal of Materials Science (2018), 53(3), 2221-2235, database is CAplus.

Hexanal is a naturally occurring aliphatic aldehyde with antimicrobial and phospholipase D inhibition properties, useful for post-harvest preservation of fresh fruits and produce. However, hexanal is highly volatile and susceptible to oxidative degradation To overcome these issues, a precursor was synthesized and entrapped in poly(lactic acid) (PLA) fiber or ethylcellulose (EC) particulate carriers. The precursor was synthesized through nucleophilic addition of hexanal to N,N’-dibenzylethane-1,2-diamine to form 1,3-dibenzylethane-2-pentyl imidazolidine-a stable hexanal precursor compound ¹H and ¹³C NMR analyses confirmed the formation of heterocyclic ring structure in the precursor. SEM anal. revealed that the precursor was dispersed homogeneously within the PLA and EC carriers by electrospinning or electrospraying processes, resp. The release of hexanal was triggered by the hydrolysis of the imidazolidine compound at 5, 25, and 45 ¡ãC, via the addition of 0.1 N citric acid to the precursor-loaded carriers. The citric acid solution resulted in significantly (p < 0.05) higher amounts and rates of hexanal released in PLA than EC, but both carriers had similar activation energies of hexanal release. FTIR anal. did not detect specific interactions between the precursor and the polymers. The hexanal precursor developed here potentially can be used as a component of active packaging to deliver hexanal and other aldehydes to enhance storage stability of fresh produce.

Journal of Materials Science published new progress about 140-28-3. 140-28-3 belongs to catalysis-chemistry, auxiliary class Benzenes, name is N1,N2-Dibenzylethane-1,2-diamine, and the molecular formula is C16H20N2, Product Details of C16H20N2.

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

Peng, Hao published the artcileOxidation and Amination of Benzylic sp³ C-H Bond Catalyzed by Rhenium(V) Complexes, Category: catalysis-chemistry, the publication is ACS Catalysis (2012), 2(1), 163-167, database is CAplus.

An efficient method for the oxidation of benzylic sp³ C-H bond to produce ketones or esters using rhenium(V) complexes as catalysts has been developed. Moreover, the amination of benzylic sp³ C-H bond with NH₂Ts in the presence of NBS has also been reported in moderate to good yields under the catalyst of rhenium(V)-based complexes.

ACS Catalysis published new progress about 457-68-1. 457-68-1 belongs to catalysis-chemistry, auxiliary class Fluoride,Benzene, name is Bis(4-fluorophenyl)methane, and the molecular formula is C13H10F2, Category: catalysis-chemistry.

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

Zheng, X. P. published the artcileMineralogy and flotation of rare-earth-bearing barium fluorophlogopite, Name: Dodecylamineacetate, the publication is Minerals Engineering (1994), 7(12), 1495-503, database is CAplus.

In an ironmaking process with rare earth-containing iron ores as feeds, the rare earth oxides report to slags. While most rare earth oxides in the slags can be recovered by a combination of high-intensity magnetic separation with gravity separation processes, europium and scandium remain in tailings of the slag mineral separation processes. Crystal structure and chem. composition of the europium and scandium-bearing mineral in the slags have been determined by x-ray diffraction and electron microprobe analyses. This mineral was identified as rare earth-bearing barium fluorophlogopite (REBF). Flotation experiments were conducted to investigate the flotation behaviors of the REBF. Exptl. results show that the REBF can be collected by using dodecylammonium acetate, sodium oleate or a combination of both in an appropriate proportion and sequence. The flotation reaction of the REBF with the collectors was discussed with the help of IR spectra and electrokinetic measurements. Phys. adsorption of the cationic collector and chem. adsorption of the anionic collector on the surface of the neg. charged REBF were observed Synergistic effect is significant when addition of sodium oleate is followed by addition of dodecylammonium acetate during flotation.

Minerals Engineering published new progress about 2016-56-0. 2016-56-0 belongs to catalysis-chemistry, auxiliary class Active Esterification, name is Dodecylamineacetate, and the molecular formula is C15H24S, Name: Dodecylamineacetate.

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