Tag: M.W=300-350

Molaei, Somayeh published the artcileHighly ordered mesoporous La(III)-substituted 5-oxopyrrolidine-2-carboxylic acid (Glp) immobilized on SBA-15 as a very efficient nanocatalyst for green aerobic oxidative coupling of thiols to disulfides, Name: 2,2′-Dithiodibenzoic acid, the publication is Applied Organometallic Chemistry (2020), 34(2), e5328, database is CAplus.

Selective aerobic oxidative coupling of thiols that are catalyzed by La(III)-substituted 5-oxopyrrolidine-2-carboxylic acid (Glp) immobilized on SBA-15 (SBA-15@Glp-La; SBA = Santa Barbara amorphous) was studied. Using SBA-15@Glp-La, the complete conversion was achieved at room temperature in the presence of air without producing any over-oxidized yields. SBA-15@Glp-La was prepared by post-grafting technique. 5-Oxopyrrolidine-2-carboxylic acid (Glp) condensation followed by La(III) impregnation caused this La(III)-grafted 5-oxopyrrolidine-2-carboxylic acid (Glp) to immobilize on SBA-15. This SBA-15@Glp-La catalyst shows excellent catalytic activity in the selective aerobic oxidative coupling of thiols. Effects of amount of the catalyst, polarity of the solvent, effects of substrate, and catalyst reusability were investigated. It has been observed that seven repetitive reaction cycles did not cause any appreciable loss in the catalytic activity of this catalyst. The catalyst characterization by SEM, energy-dispersive X-ray spectroscopy, X-ray diffraction, Fourier-transform IR spectroscopy, thermal gravimetric anal., transmission electron microscopy, inductively coupled plasma, elemental mapping, and N₂ adsorption-desorption is reported. The procedure developed is heterogeneous and environmentally benign.

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, Name: 2,2′-Dithiodibenzoic acid.

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

Molaei, Somayeh published the artcileImmobilization of cerium (IV) and erbium (III) in mesoporous MCM-41: Two novel and highly active heterogeneous catalysts for the synthesis of 5-substituted tetrazoles, and chemo- and homoselective oxidation of sulfides, Formula: C14H10O4S2, the publication is Applied Organometallic Chemistry (2019), 33(7), n/a, database is CAplus.

Two well-ordered 2D-hexagonal cerium (IV) and erbium (III) embedded functionalized mesoporous MCM-41(MCM-41@Serine/Ce and MCM-41@Serine/Er) was developed via functionalization of mesoporous MCM-41. The surface modification method was used in the preparation of serine-grafted MCM-41 and led to the development of MCM-41@Serine. The reaction of MCM-41@Serine with Ce(NH₄)₂(NO₃)₆¡¤2H₂O or ErCl₃¡¤6H₂O in ethanol under reflux led to the organization of MCM-41@Serine/Ce and MCM-41@Serine/Er catalysts. The structures of these catalysts were determined using SEM, mapping, energy-dispersive X-ray spectroscopy, Fourier transform-IR, thermogravimetric anal., X-ray diffraction, inductively coupled plasma and Brunauer-Emmett-Teller anal. These MCM-41@Serine/Ce and MCM-41@Serine/Er catalysts showed outstanding catalytic performance in sulfides oxidation and synthesis of 5-substituted tetrazoles. These catalysts can be recycled for seven repeated reaction runs without showing a considerable decrease in 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, Formula: 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

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 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

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

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 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

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

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