Month: December 2022

Jafari, A. published the artcileElectronic absorption spectra of cresyl violet acetate in anisotropic and isotropic solvents, Safety of 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate, the publication is Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy (2007), 66A(3), 717-725, database is CAplus and MEDLINE.

The isotropic and anisotropic solvation characteristics of cresyl violet acetate (CVA) were studied in isotropic liquid solutions and in polar nematic matrixes as a function of the solvent type and concentration The interaction of the ionic dye with the anisotropic surrounding and with that of the isotropic solvents was studied and compared. Probably the nematic liquid crystalline solvents might create stronger solvation than the isotropic solvents. The spectral shifts were correlated by the solvent permittivity and Kamlet-Taft parameters. The polarized absorption spectra of cresyl violet acetate were measured at 400-800 nm and the dichroic ratio R and degree of anisotropy S of this dye in the liquid crystalline host determined

Spectrochimica Acta, Part A: Molecular and Biomolecular Spectroscopy 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 C18H15N3O3, Safety of 5,9-Diaminobenzo[a]phenoxazin-7-ium acetate.

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

Khashei Siuki, Hossein published the artcileNew Acetamidine Cu(II) Schiff base complex supported on magnetic nanoparticles pectin for the synthesis of triazoles using click chemistry, Formula: C6H17NO3Si, the publication is Scientific Reports (2022), 12(1), 3771, database is CAplus and MEDLINE.

The new catalyst copper defines as Fe₃O₄@Pectin@(CH₂)₃-Acetamide-Cu(II) was successfully manufactured and fully characterized by different techniques, including FT-IR, XRD, TEM, FESEM, EDX, VSM, TGA and ICP anal. All results showed that copper was successfully supported on the polymer-coated magnetic nanoparticles. One of the most important properties of a catalyst was the ability to be prepared from simple materials such as pectin that’s a biopolymer that was widely found in nature. The catalytic activity of Fe₃O₄@Pectin@(CH₂)₃-Acetamide-Cu(II) was examined to obtain triazoles I [R¹ = Bn, 4-MeC₆H₄CH₂, CH₂C(O)C₆H₅, etc.; R² = CH₂OH, (Me)₂C(OH), Ph] in a classical, one pot and the three-component reaction of terminal alkynes, alkyl halides and sodium azide in water and observed, proceeding smoothly and completed in good yields and high regioselectivity. The critical potential interests of the present method include high yields, recyclability of catalyst, easy workup, using an eco-friendly solvent and the ability to sustain a variety of functional groups, which give economical as well as ecol. rewards.

Scientific Reports 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, Formula: C6H17NO3Si.

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

Yarmohammadi, Nasrin published the artcileCopper based on diaminonaphthalene-coated magnetic nanoparticles as robust catalysts for catalytic oxidation reactions and C-S cross-coupling reactions, Name: 2,2′-Dithiodibenzoic acid, the publication is RSC Advances (2021), 11(16), 9366-9380, database is CAplus and MEDLINE.

In this work, the immobilization of copper(II) on the surface of 1,8-diaminonaphthalene (DAN)-coated magnetic nanoparticles provided a highly active catalyst for the oxidation reaction of sulfides to sulfoxides and the oxidative coupling of thiols to disulfides using hydrogen peroxide (H₂O₂). This catalyst was also applied for the one-pot synthesis of sym. sulfides via the reaction of aryl halides with thiourea as the sulfur source in the presence of NaOH instead of former strongly basic and harsh reaction conditions. Under optimum conditions, the synthesis yields of sulfoxides, sym. sulfides, and disulfides were about 99%, 95%, and 96% resp. with highest selectivity. The heterogeneous copper-based catalyst has advantages such as the easy recyclability of the catalyst, the easy separation of the product and the less wastage of products during the separation of the catalyst. This heterogeneous nanocatalyst was characterized by FESEM, FT-IR, VSM, XRD, EDX, ICP and TGA. Furthermore, the recycled catalyst can be reused for several runs and was economically effective.

RSC Advances 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 C15H14N2, Name: 2,2′-Dithiodibenzoic acid.

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

Yarmohammadi, Nasrin published the artcileIn situ synthesis of bimetallic iron oxide/Cu nanoparticles over pectin hydrogel obtained from biomass resource as reusable green catalyst for oxidation and C-S cross-coupling reactions, Category: catalysis-chemistry, the publication is Chemical Papers (2022), 76(7), 4289-4307, database is CAplus.

The incorporation of nanoparticles into the hydrogel matrix empowers the development of innovative catalytic materials with improved properties. Pectin is a heteropolysaccharide containing a large number of hydroxyl, carbonyl, and carboxylic acid functional groups that were selected as suitable support. Then, in the presence of calcium chloride pectin hydrogel was prepared by phys. crosslinking. After that, the iron and copper nanoparticles were loaded on their surface and used as an efficient and biodegradable catalyst. The synthesized bimetallic nanocatalyst was characterized via FESEM, VSM, TGA, ICP, XRD, EDX, BET, TEM, and FT-IR techniques. The morphol. and structure studies revealed that pectin matrix hydrogel can efficiently load nanoparticles and also prevent the agglomeration of nanoparticles. Catalytic performances of ¦Ã-Fe₂O₃/Cu@HPECGs nanocomposite were investigated in the oxidative coupling of thiols to disulfides in the presence of hydrogen peroxide (H₂O₂) as a green oxidant. In addition, ¦Ã-Fe₂O₃/Cu@HPECGs nanocatalyst can synthesize sym. sulfides in a one-pot method with thiourea as the sulfur source under mild conditions. In comparison to pure iron nanoparticles, the addition of Cu nanoparticles increased the catalytic efficiency. These procedures provide applicable strategies with yields as high as 90% and high selectivity. This bimetallic catalyst can be recycled nine times without changing its structure, activity, and selectivity.

Chemical Papers 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 C6H12F3NO5S, Category: catalysis-chemistry.

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

Tamoradi, Taiebeh published the artcileHighly efficient, green, rapid, and chemoselective oxidation of sulfur-containing compounds in the presence of an MCM-41@creatinine@M (M = La and Pr) mesostructured catalyst under neat conditions, Recommanded Product: 2,2′-Dithiodibenzoic acid, the publication is New Journal of Chemistry (2018), 42(7), 5479-5488, database is CAplus.

The authors report the synthesis of two green recoverable catalysts by covalent linking of the creatinine La and Pr complexes on an MCM-41 mesostructure with the com. available materials and via a simple and inexpensive procedure. These heterogeneous catalysts were characterized by FTIR spectroscopy, energy-dispersive x-ray spectroscopy, SEM, N₂ adsorption and desorption, inductively coupled plasma optical emission spectroscopy, and TGA. The obtained mesostructures act as active and reusable catalysts for the oxidation of sulfides and oxidative coupling of thiols under neat conditions. More importantly, significant practical advantages of this environmentally friendly process include high efficiency, good reaction times, and convenient recovery and reusability for several times without any significant loss of activity of the catalyst.

New Journal of Chemistry 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 C7H10O4, Recommanded Product: 2,2′-Dithiodibenzoic acid.

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

Tamoradi, Taiebeh published the artcileNi(II)-Adenine complex coated Fe₃O₄ nanoparticles as high reusable nanocatalyst for the synthesis of polyhydroquinoline derivatives and oxidation reactions, COA of Formula: C14H10O4S2, the publication is Applied Organometallic Chemistry (2018), 32(1), n/a, database is CAplus.

In the present study, Fe₃O₄ nanoparticles were prepared via simple and versatile procedure. Then, a novel and green catalyst was synthesized by the immobilization of Ni on Fe₃O₄ nanoparticles coated with adenine. The activity of this nanostructure compound was examined for the oxidation of sulfides, oxidative coupling of thiols and synthesis of polyhydroquinolines. The prepared catalyst was characterized by Fourier transform IR spectroscopy (FT-IR), SEM (SEM), energy-dispersive X-ray spectroscopy (EDS), inductively coupled plasma optical emission spectroscopy (ICP-OES), X-ray Diffraction (XRD), thermal gravimetric anal. (TGA), and vibrating sample magnetometer (VSM) measurements. This organometallic catalyst was recovered by the assistance of an external magnetic field from the reaction mixture and reused for seven continuous cycles without noticeable change in its catalytic activity.

Applied Organometallic Chemistry 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 C3H6BrNaO3S, COA of Formula: C14H10O4S2.

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

Tamoradi, Taiebeh published the artcileSynthesis and characterization of oxo-vanadium complex anchored onto SBA-15 as a green, novel and reusable nanocatalyst for the oxidation of sulfides and oxidative coupling of thiols, Synthetic Route of 119-80-2, the publication is Research on Chemical Intermediates (2018), 44(7), 4259-4276, database is CAplus.

The present work describes the synthesis of a new oxo-vanadium complex immobilized on SBA-15 nanostructure as an efficient catalyst for oxidation of sulfides and oxidative coupling of thiols. Characterization of the resultant AMPD@SBA-15 nanostructure was performed by various physico-chem. techniques such as Fourier transform IR spectroscopy, transmission and scanning electron microscopies, energy-dispersive X-ray spectroscopy, inductively coupled plasma optical emission spectroscopy, X-ray diffraction, thermal gravimetric anal., and N₂ adsorption and desorption. The results of the developed procedure bring several benefits such as the use of com. available, ecol. benign, operational simplicity, and cheap and chem. inert reagents. It shows good reaction times, practicability and high efficiency, and is easily recovered from the reaction mixture by simple filtration and reused for several consecutive cycles without noticeable change in its catalytic activity. More importantly, high efficiency, simple and an inexpensive procedure, com. available materials, easy separation, and an eco-friendly procedure are the several advantages of the currently employed heterogeneous catalytic system. Graphical Abstract: [Figure not available: see fulltext.].

Research on Chemical Intermediates 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 C5H6N2O2, Synthetic Route of 119-80-2.

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

Molaei, Somayeh published the artcileSelective and efficient oxidation of sulfides and thiols to their corresponding sulfoxides and disulfides catalyzed with praseodymium (III) and dysprosium (III) isonicotinamide (INA) complexes grafted onto modified mesoporous MCM-41, Related Products of catalysis-chemistry, the publication is Solid State Sciences (2020), 106091, database is CAplus.

Praseodymium (III) and dysprosium (III) isonicotinamide (INA) complexes grafted onto modified mesoporous MCM-41 with 3-chloropropyltriethoxysilane (CPTES), as two novel catalysts, were synthesized. The catalysts were determined using SEM, Mapping, EDX, FT-IR, TGA, XRD, ICP, and BET anal. The catalysts (MCM-41-INA-Pr and MCM-41-INA-Dy) were further studied for the oxidation reaction of sulfur-containing compounds Catalytic results displayed that the MCM-41-INA-Pr and MCM-41-INA-Dy show high effectiveness for promoting the oxidation reaction of sulfur-containing compounds The catalysts could be recycled for seven runs with negligible destruction of catalytic performance.

Solid State Sciences 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, Related Products of catalysis-chemistry.

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

Molaei, Somayeh published the artcileA green methodology for thioether formation reaction and synthesis of symmetrical disulfides over new heterogeneous Cu attached to bifunctionalized mesoporous MCM-41, Product Details of C14H10O4S2, the publication is Microporous and Mesoporous Materials (2021), 110990, database is CAplus.

New recyclable Cu attached bifunctionalized mesoporous MCM-41 (MCM-41-quinoline-2-4-dicarboxylic acid-Cu) has been developed through post-functionalization modification of silica MCM-41. Novel catalyst was effective, and greener catalyst for the thioether formation reaction between aryl halides and S₈, instead of thiol, and synthesis of disulfides by coupling of aromatic thiols with mol. O₂(air). The protocol was a greener way toward the thioether formation reaction and the synthesis of disulfides and shows a 100% atom economy. Herein, thioether was produced as the only product. One way that chemists evaluate a synthetic route was to focus on its atom economy, the proportion of reactant atoms that end up in the desired product. The efficiency of synthesis was quantified in terms of the percent atom economy, the catalytic system exhibits high chemo-selectivity, as shown by high yields. The catalyst can be easily separated using simple recovery and reused several times with consistent activity.

Microporous and Mesoporous Materials 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

Molaei, Somayeh published the artcileSynthesis and characterization of indium and thallium immobilized on isonicotinamide-functionalized mesoporous MCM-41: Two novel and highly active heterogeneous catalysts for selective oxidation of sulfides and thiols to their corresponding sulfoxides and disulfides, Application of 2,2′-Dithiodibenzoic acid, the publication is Applied Organometallic Chemistry (2019), 33(7), n/a, database is CAplus.

Two highly ordered isonicotinamide (INA)-functionalized mesoporous MCM-41 materials supporting indium and thallium (MCM-41-INA-In and MCM-41-INA-Tl) were developed using a covalent grafting method. A surface functionalization method was applied to prepare Cl-modified mesoporous MCM-41 material. Condensation of this Cl-functionalized MCM-41 with INA led to the formation of MCM-41-INA. The reaction of MCM-41-INA with In(NO₃)₃ or Tl(NO₃)₃ led to the formation of MCM-41-INA-In and MCM-41-INA-Tl catalysts. The resulting materials were characterized using various techniques. These MCM-41-INA-In and MCM-41-INA-Tl catalysts showed excellent catalytic performance in the selective oxidation of sulfides and thiols to their corresponding sulfoxides and disulfides. Finally, it was found that the anchored indium and thallium do not leach out from the surface of the mesoporous catalysts during reaction and the catalysts was reused for seven repeat reaction runs without considerable loss of catalytic performance.

Applied Organometallic Chemistry 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, Application of 2,2′-Dithiodibenzoic acid.

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