Month: December 2022

Deo, N. published the artcileBiological removal of some flotation collector reagents from aqueous solutions and mineral surfaces, Product Details of C14H31NO2, the publication is Minerals Engineering (1998), 11(8), 717-738, database is CAplus.

The utility of Bacillus polymyxa, a heterotrophic bacterium indigenous to ore deposits in the degradation of several flotation collectors was studied. Dodecyl amine, diamine, iso-Pr xanthate and Na oleate could be efficiently removed from alk. solutions through bioremediation in an environmentally acceptable fashion. The bacterial cells were capable of stripping adsorbed collector reagents from various mineral surfaces. Mechanisms of such a biodegradation process are illustrated through results from zeta potential, adsorption, bacterial growth and surface anal. studies.

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 C14H31NO2, Product Details of C14H31NO2.

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

Khazaei, Mohammad published the artcileSelective removal of mercury(II) from water using a 2,2-dithiodisalicylic acid-functionalized graphene oxide nanocomposite, kinetic, thermodynamic, and reusability studies, Product Details of C14H10O4S2, the publication is Journal of Molecular Liquids (2018), 189-198, database is CAplus.

2,2-Dithiodisalicylic acid-functionalized magnetic graphene oxide (Fe₃O₄@DTSA_GO) was used for the selective removal of Hg(II) from aqueous solution The equilibrium was reached after 10 min and the maximum Hg(II) adsorption capacity of the Fe₃O₄@DTSA_GO nanocomposite was 283.5 mg g^-1. The Hg(II) adsorption ability increased with the pH value of the aqueous solution Isotherm and kinetic studies revealed the Sips isotherm model and pseudo-second kinetic model to provide the best fit to the exptl. results. The pos. value of ¦¤H¡ã indicated endothermic interactions between Hg(II) and Fe₃O₄@DTSA_GO, while the neg. ¦¤G¡ã revealed a spontaneous reaction and the pos. ¦¤S¡ã an increase of the randomness at the solid-solute interface during the adsorption process. The selective removal of Hg(II) by the nanocomposite confirmed the presence of higher-affinity binding sites for Hg(II) than for Cd(II), Co(II), Zn(II), and Ni(II) ions. Furthermore, the Fe₃O₄@DTSA_GO nanocomposite exhibited excellent preferential adsorption for Hg(II) spiked in drinking water samples. EDTA 0.01 N was found to be an efficient elution agent for nanocomposite regeneration, with which over 84% of the adsorbed Hg(II) was recovered after five adsorption/desorption cycles.

Journal of Molecular Liquids published new progress about 119-80-2. 119-80-2 belongs to catalysis-chemistry, auxiliary class sulfides,Carboxylic acid,Benzene, name is 2,2′-Dithiodibenzoic acid, and the molecular formula is C14H10O4S2, Product Details of C14H10O4S2.

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

Zakerhamidi, M. S. published the artcileSolvent specific and nonspecific interactions’ effects on nonlinear optical responses of Cresyl Violet dye, Product Details of C18H15N3O3, the publication is Journal of Molecular Liquids (2018), 529-535, database is CAplus.

In this study, solvents polarity effects on nonlinear properties of Crysel violet acetate (CVA) dye were investigated by Z-scan method. Nonlinear parameters (absorption coefficient and refractive index) for CVA dye in solvent media were obtained using exptl. setup. The obtained exptl. results demonstrate that the mechanism of nonlinear absorption depend highly on the properties of surrounding mol. media and the character of intermol. interactions. Contributions of intermol. interactions were determined by exploiting these results with Kamlet-Taft (KAT) polarity parameters. The refractive index in different solvents shows neg. sign (coefficient’s order is 10^-7). Also, nonlinear absorptions in different solvents show pos. sign and the obtained coefficient’s order is 10^-4.

Journal of Molecular Liquids published new progress about 10510-54-0. 10510-54-0 belongs to catalysis-chemistry, auxiliary class Other Aromatic Heterocyclic,Salt,Amine,Inhibitor,Inhibitor, name is 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, and the molecular formula is C48H47FeP, Product Details of C18H15N3O3.

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

Abbas, H. A. published the artcileDecolourization of crystal violet using nano-sized novel fluorite structure Ga₂Zr_2-xW_xO₇ photocatalyst under visible light irradiation, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine, the publication is Royal Society Open Science (2020), 7(3), 191632, database is CAplus and MEDLINE.

Fluorite-type Zr-based oxides with the composition Ga₂Zr_2-xW_xO₇ (x = 0, 0.05, 0.1, 0.15 and 0.2) were prepared using the citrate technique. Appropriate characterizations of all prepared materials were carried out. X-ray diffraction clarified that the undoped and W-doped Ga₂Zr₂O₇ samples were crystallized in the cubic fluorite phase structure. The average particle size of the samples was in the range of 3-8 nm. The lowest band gap (1.7 eV) and the highest surface area (124.3 m² g^-1) were recorded for Ga₂Zr_0.85W_0.15O₇. The photocatalytic impacts of the prepared systems were studied by removal of crystal violet (CV) dye employing visible light illumination and taking into consideration the initial dye concentrations, duration of visible irradiation treatment, catalysts dose and the dopant concentration The obtained results showed higher dye removal with the boost of the catalyst dosage. W doping shifted the absorption to the visible light range by decreasing the band gap from 4.95 eV for parent Ga₂Zr₂O₇ to 1.7 eV for 15 mol% tungsten-doped Ga₂Zr₂O₇ enhancing the photocatalytic decolorization of CV from 4.2% to 83.6% for undoped and 15 mol% W-doped Ga₂Zr₂O₇, resp., at optimum operating conditions (pH 9, 1gl^-1 catalyst dose and 300 min) while heavily doped W sample containing 20 mol% W showed lower removal than 15 mol% W-doped Ga₂Zr₂O₇. Complete CV degradation using 15 mol% W-doped Ga₂Zr₂O₇ was attained with the assistance of 25 mmol l^-1 hydrogen peroxide. The reaction is aligned to pseudo-first-order kinetics. Different scavengers were introduced to decide the significance of the reactive species in CV degradation O-?2 and h+ had the major role in the degradation of CV by Ga₂Zr_2-xW_xO₇ system compared with HO?.

Royal Society Open 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, Recommanded Product: N1,N2-Dibenzylethane-1,2-diamine.

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

Ahmadi, Sina published the artcilePhoto- and thermo-responsive extracellular matrix mimicking nano-coatings prepared from poly(N-isopropylacrylamide)-spiropyran copolymer for effective cell sheet harvesting, Application In Synthesis of 13822-56-5, the publication is Progress in Organic Coatings (2022), 106847, database is CAplus.

Poly(N-isopropylacrylamide)-spiropyran (PNIPAAm-SP) copolymers were tethered onto the glass substrate using surface-initiated atom transfer radical polymerization (SI-ATRP). The substrate was previously activated by ultra-violet ozone (UVO) irradiation and the pre-synthesized initiator was immobilized on it. A block of PNIPAAm was grafted onto the glass substrates, followed by a second block of mixed NIPAAm and spiropyran acrylate (SPA). The effects of UVO irradiation time and polymerization time of spiropyran containing block on cell sheet formation and detachment characteristics were evaluated. The photo-responsiveness of SPA was evaluated by ultra-violet visible spectroscopy (UV-vis). The presence and thickness of the grafted polymer layers were evidenced by attenuated total reflectance Fourier-transform IR spectroscopy (ATR-FTIR), XPS and field emission SEM (FE-SEM). The results of water contact angle (WCA) anal. showed that the modified surfaces became hydrophilic with decreasing temperature from 37 to 20 ¡ãC as well as with light irradiation L929 mouse fibroblast cell culture results indicated a complete cell sheet formation. By applying temperature or light stimuli, the cell sheets were detached in a trypsin-free procedure.

Progress in Organic Coatings published new progress about 13822-56-5. 13822-56-5 belongs to catalysis-chemistry, auxiliary class Organic Silicones, name is 3-(Trimethoxysilyl)propan-1-amine, and the molecular formula is C6H17NO3Si, Application In Synthesis of 13822-56-5.

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

Shanbhag, Pramod published the artcileRauhut-Currier type homo- and heterocouplings involving nitroalkenes and nitrodienes, HPLC of Formula: 4230-93-7, the publication is Organic & Biomolecular Chemistry (2010), 8(21), 4867-4873, database is CAplus and MEDLINE.

Reaction of nitroalkenes R¹CH:CHNO₂ (R¹ = 2-furyl, 2-thienyl, Ph, etc.) or nitrodienes, e.g. R²CH:CHCH:CHNO₂ (R² = Ph, 2-furyl, etc.), with Me vinyl ketone or acrylate in the presence of the imidazole-LiCl catalyst system provides Rauhut-Currier (vinylogous Morita-Baylis-Hillman) adducts R¹CH:CH(NO₂)CH₂CH₂COX (X = Me, EtO) or R²CH:CHCH:C(NO₂)CH₂CH₂COMe in moderate yields. Under similar conditions (imidazole-hydroquinone), nitroalkenes and nitrodienes undergo self-dimerization to afford the Rauhut-Currier adducts in varying yields. An alternative self-dimerization-nitro group elimination pathway in the presence of tricyclohexylphosphine was observed with heteroaromatic nitroalkenes. A synthetically useful one-pot two step transformation of Rauhut-Currier adducts of nitroalkenes with Me vinyl ketone to 2,3-disubstituted cyclopentenones is also described.

Organic & Biomolecular Chemistry published new progress about 4230-93-7. 4230-93-7 belongs to catalysis-chemistry, auxiliary class Alkenyl,Nitro Compound,Benzene,Ether, name is 1,2-Dimethoxy-4-(2-nitrovinyl)benzene, and the molecular formula is C8H14O4, HPLC of Formula: 4230-93-7.

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

Thurakkal, Liya published the artcileDesign, synthesis and bioactive properties of a class of macrocycles with tunable functional groups and ring size, Name: N1,N2-Dibenzylethane-1,2-diamine, the publication is Scientific Reports (2022), 12(1), 4815, database is CAplus and MEDLINE.

Abstract: The design and synthesis of a versatile class of macrocycles with tunable functional groups and ring size are unfolded. Herein, a synthetic strategy is reported to furnish a new class of macrocycles in multi-gram scale in a two-step reaction. The total time taken for synthesizing a macrocycle is 1.5 h. Dithiocarbamates, an important functional group in biomedical and material sciences, is strategically incorporated in the macrocyclic backbone without metal for the first time. It is noteworthy that when state-of-the-art macrocycle synthesis is in millimolar concentration, this work employs the reaction in molar concentration (0.2-0.4 M). As proof-of-principle, a library of macrocycles was synthesized, varying the functional groups and ring size. The physicochem. properties of macrocycles revealed their druggable nature and are affirmed by protein (serum albumin) interaction study theor. and exptl. Diverse functional groups and ring sizes of macrocycles brought about twenty-five-fold difference in binding constant with the model protein.

Scientific Reports 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 C9H6BrNO, Name: N1,N2-Dibenzylethane-1,2-diamine.

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

Goerdeler, Joachim published the artcileThioacyl isocyanates. XII. Preparation and comparison of aliphatic, aromatic and heteroaromatic compounds, Related Products of catalysis-chemistry, the publication is Chemische Berichte (1981), 114(2), 549-63, database is CAplus.

Dithiazolones I (R = Me, halomethyl, optionally substituted Ph, CH₂Ph, CO₂Et, CMe₃, CH:CHPh, NMe₂, pyridyl, 2-furyl, 5-methyl-3-isoxazolyl, 5-oxo-1,2,4-dithiazol-3-yl) were prepared by treating RCSNH₂ with ClCOSCl. II were similarly obtained from RCSNH₂ and ClCOCOCl. I and II eliminated S and CO resp. to give S:CRNCO. The latter compounds underwent cycloaddition reaction with imines, norbornene, and morpholinocyclohexene, as well as dimerization. S:CRNCO in which R is a strongly electron-attracting group are less reactive than others.

Chemische Berichte 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

Rao, Maddali L. N. published the artcileChemo-selective Synthesis of 4-Chloro-3-(arylethynyl)coumarins and their Synthetic Transformations, Recommanded Product: 4,4′-Dimethyldiphenyl, the publication is Asian Journal of Organic Chemistry (2021), 10(11), 2944-2949, database is CAplus.

A study describing the chemoselective reactivity of 4-chloro-3-(2,2-dibromovinyl)-2H-chromen-2-ones with triarylbismuth reagents in the synthesis of 4-chloro-3-(arylethynyl)coumarins under Pd-catalyzed conditions were presented. A viable Pd-catalyzed protocol for the chemoselective cross-coupling reactivity of the 3-gem-dibromide in comparison to the 4-chloro substituent in coumarin substrates was developed. The synthetic scope of 4-chloro-3-(arylethynyl)coumarins with reactive 4-chloro substituent was further demonstrated in the synthesis of 2-(arylethynyl)benzofurans, 4-(N-heteroaryl)-3-(arylethynyl)coumarins, and 4-methoxy-3-(p-tolylethynyl)coumarin under different reaction conditions.

Asian Journal of Organic Chemistry published new progress about 613-33-2. 613-33-2 belongs to catalysis-chemistry, auxiliary class Benzene, name is 4,4′-Dimethyldiphenyl, and the molecular formula is C14H14, Recommanded Product: 4,4′-Dimethyldiphenyl.

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

Wu, Fengtian published the artcile2,5-Dihydroxyterephthalic Acid Accelerated Cu(NO₃)₂.3H₂O-Catalyzed Homocoupling Reaction of Arylboronic Acids, HPLC of Formula: 613-33-2, the publication is Letters in Organic Chemistry (2020), 17(11), 877-883, database is CAplus.

A catalyst system derived from com. available Cu(NO₃)₂.3H₂O and 2,5-dihydroxyterephthalic acid is applied to the homocoupling reaction of arylboronic acids. This transformation provides a convenient approach to sym. biaryls with good to excellent yields (39%- 95%), and exhibits good functional group compatibility. Furthermore, biaryl can be prepared in gram quantities in good yield.

Letters in Organic Chemistry published new progress about 613-33-2. 613-33-2 belongs to catalysis-chemistry, auxiliary class Benzene, name is 4,4′-Dimethyldiphenyl, and the molecular formula is C5H11NO2S, HPLC of Formula: 613-33-2.

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