Category: 613-33-2

dos Santos, Beatriz F. published the artcileAnchored Pd(0) Nanoparticles on Synthetic Talc for the Synthesis of Biaryls and a Precursor of Angiotensin II Inhibitors, Product Details of C14H14, the publication is Synthesis (2021), 53(5), 933-942, database is CAplus.

The palladium-catalyzed Suzuki-Miyaura cross-coupling reaction is one of the most important and efficient reactions to prepare a variety of organic compounds, including biaryls. Despite the overwhelming number of reports related to this topic, some methodol. difficulties persist in terms of catalyst handling, recovery, and reuse, as well as the reaction media. This work reports the rational design of new, efficient, cost-effective, and reusable palladium catalysts supported on synthetic talc for the Suzuki-Miyaura reaction. From the results, key points were identified: both designed catalysts accelerated the reaction in EtOH and an open-flask setup, affording moderate to excellent yields within a short time (e.g., 30 min) even for deactivated aryl halides; the protocol can be applied to a great number of both cross-coupling partners, showing an excellent functional group tolerance; the catalysts can be recovered and reused without significant loss of activity. This protocol was used for the synthesis of a precursor of angiotensin II inhibitors such as valsartan, losartan, irbesartan, and telmisartan.

Synthesis 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, Product Details of C14H14.

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

Hu, Binjing published the artcileRhenium-Catalyzed Arylation-Acyl Cyclization between Enol Lactones and Organomagnesium Halides: Facile Synthesis of Indenones, SDS of cas: 613-33-2, the publication is Angewandte Chemie, International Edition (2021), 60(28), 15497-15502, database is CAplus and MEDLINE.

A set of rhenium-catalyzed arylation-acyl cyclizations between (hetero)arylmagnesium halides and enol lactones through a cascade C(sp²)-C(sp²)/C(sp²)-C(sp²) bond formation under mild reaction conditions was developed. Indeed, a wide range of functional groups on both organomagnesium halides and enol lactones was well tolerated by the simple rhenium catalysis, thus furnishing polyfunctionalized indenones in one-pot fashion and with complete control of the regioselectivity. Moreover, this approach also provided a straightforward synthetic route to neolignan and (iso)pauciflorol F. Mechanistic studies demonstrated that the reaction involved a sequence of syn-carborhenation and intramol. nucleophilic addition

Angewandte Chemie, International Edition 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, SDS of cas: 613-33-2.

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

Mousa, Abdelrazek H. published the artcileEnhancing the Stability of Aromatic PCN Pincer Nickel Complexes by Incorporation of Pyridine as the Nitrogen Side Arm, Category: catalysis-chemistry, the publication is European Journal of Inorganic Chemistry (2020), 2020(45), 4270-4277, database is CAplus.

New PCN^Py pincer nickel complexes have been synthesized through a short synthetic route. Incorporating pyridine as the nitrogen side arm facilitated the C-H activation in the PCN ligand and allowed the cyclometalation with nickel to take place at room temperature Pyridine also enhanced the stability of ¦Â-hydrogen-containing alkyl complexes. Also, the sym. NCN nickel complex with pyridine side arms was successfully obtained giving a rare example of such type of complexes to be prepared through direct C-H activation. Furthermore, preliminary results showed that the (PCN^Py)Ni-Br is active in Kumada coupling reactions particularly the coupling of aryl halides with aryl Grignard reagents.

European Journal of Inorganic 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, Category: catalysis-chemistry.

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

Vercammen, Jannick published the artcileShape-selective C-H activation of aromatics to biarylic compounds using molecular palladium in zeolites, Recommanded Product: 4,4′-Dimethyldiphenyl, the publication is Nature Catalysis (2020), 3(12), 1002-1009, database is CAplus.

The selective activation of inert C-H bonds has emerged as a promising tool for avoiding the use of wasteful traditional coupling reactions. Oxidative coupling of simple aromatics allows for a cost-effective synthesis of biaryls. However, utilization of this technol. is severely hampered by poor regioselectivity and by the limited stability of state-of-the-art homogeneous Pd catalysts. Here, we show that confinement of cationic Pd in the pores of a zeolite allows for the shape-selective C-H activation of simple aromatics without a functional handle or electronic bias. For instance, out of six possible isomers, 4,4′-bitolyl is produced with high shape selectivity (80%) in oxidative toluene coupling on Pd-Beta. Not only is a robust, heterogeneous catalytic system obtained, but this concept is also set to control the selectivity in transition-metal-catalyzed arene C-H activation through spatial confinement in zeolite pores.

Nature Catalysis 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 C15H20O6, Recommanded Product: 4,4′-Dimethyldiphenyl.

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

Wang, Haotian published the artcileIn-Tube Passive Dosing of Hydrophobic Organic Chemicals: Controlling Freely Dissolved Concentrations in Flow-Through and Large-Volume Experiments, Computed Properties of 613-33-2, the publication is Environmental Science & Technology Letters (2022), 9(4), 339-344, database is CAplus.

Passive dosing is increasingly used to control exposure concentrations of hydrophobic organic chems. (HOCs) in small-sized aquatic tests. This study introduces in-tube passive dosing to control HOC exposure in larger test volumes and flow-through experiments Water was dosed by passing it through a tube holding HOC-loaded silicone rods. We equipped a 6 m PTFE tube (ID 10 mm) with four parallel silicone rods (OD 3 mm) to accommodate water flows from 0.2 to 120 L/h and developed a mass transfer kinetic model to capture the chemodynamics in the system. The first experiment was conducted with fluoranthene to determine the dosing kinetics, reproducibility, and long-term performance of the system. Aqueous concentrations were measured by mol. fluorescence at different flows and positions within the tube. The second experiment was conducted with a complex petroleum mixture (cracked gas oil). Concentrations of 22 mixture constituents were measured by solid phase microextraction coupled to GC-MS. Overall, the system provided stable and reproducible water concentrations, which were at equilibrium for flows less than 10 mL/min and at steady state for higher flows. Fluoranthene concentrations declined less than 20% when dosing 1 m³ during 1 wk. The mass transfer kinetic model can now be used to scale the system for various applications.

Environmental Science & Technology Letters 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 C18H28N2O7, Computed Properties of 613-33-2.

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

Mondal, Biplab published the artcileCopper Nanoclusters for Catalytic Carbon-Carbon and Carbon-Nitrogen Bond Formations, Synthetic Route of 613-33-2, the publication is ACS Applied Nano Materials (2022), 5(6), 7932-7943, database is CAplus.

Newly synthesized blue-emitting few-atom copper nanoclusters (CuNCs) have been successfully utilized for catalyzing C(sp²)-C(sp²) and C(sp²)-N(sp³) bond formations. Various substituted biphenyls and 2° aromatic amines have been synthesized in good yield using this copper catalyst at facile reaction conditions in DMSO. The amount of required nanocatalysts is as low as merely 2 mol % for carrying out these reactions. These types of copper nanoclusters are promising as potential and cheap catalysts for replacing conventional metal nanoparticles and heavy-metal-ion-based organic catalysts. The optimized structure of Cu₆(GS)₂ [GS = C₁₀H₁₆N₃O₆S] from computational studies revealed the perfect arrangements of Cu atoms in CuNCs and their interactions with stabilizing ligands. It is evident from the structure that some free Cu sites are available in the nanocluster species. These kinds of coordinatively unsaturated sites are highly active toward the catalytic reactions. Matrix-assisted laser desorption ionization-time-of-flight (MALDI-TOF) anal. also supports the computational hypothesis. Interestingly, matrix-assisted laser desorption ionization-time-of-flight mass spectrometry (MALDI-TOF MS) and computational studies revealed the formation of several reaction key intermediates in catalyzing C(sp²)-C(sp²) bond formation.

ACS Applied Nano Materials 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, Synthetic Route of 613-33-2.

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

Cao, Dawei published the artcileLight-driven transition-metal-free direct decarbonylation of unstrained diaryl ketones via a dual C-C bond cleavage, Formula: C14H14, the publication is Nature Communications (2022), 13(1), 1805, database is CAplus and MEDLINE.

An efficient light-driven transition-metal-free strategy for decarbonylation of unstrained diaryl ketones R¹C(O)R² (R¹ = Ph, 2H-1,3-benzodioxol-5-yl, thiophen-2-yl, etc.; R² = Ph, 4-methoxyphenyl, pyridin-2-yl, etc.) to construct biaryl compounds R¹R² through dual inert C – C bonds cleavage was reported. This reaction featured mild reaction conditions, easy-to-handle reactants and reagents, and excellent functional groups tolerance. The mechanistic investigation and DFT calculation suggest that this strategy proceeds through the formation of dioxy radical intermediate via a single-electron-transfer (SET) process between photo-excited diaryl ketone and DBU mediated by DMSO, followed by removal of CO₂ to construct biaryl compounds

Nature Communications 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, Formula: C14H14.

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

Heravi, Majid M. published the artcileN-Heterocyclic Carbene-Palladium Complex onto Graphene Oxide and Poly (ethylene glycol) (PEG) Applied as Superior Catalyst for the Suzuki-Miyaura Cross-Coupling Reaction in Water, Application In Synthesis of 613-33-2, the publication is Applied Organometallic Chemistry (2020), 34(9), e5805, database is CAplus.

Using polymeric nanocomposites incorporated Pd to promote C-C coupling reactions has been found as one of the most successful strategies. In this paper, graphene oxide (GO) was used as an efficient surface, immobilized by water-soluble poly (ethylene glycol)-imidazole followed by introduction of PdCl₂ salt to obtain the desired catalyst. Catalytic performance of this composite was investigated in the Suzuki-Miyaura cross-coupling reaction under mild reaction conditions and superior results were obtained. The hydrophilic nature of the catalyst and well distribution of Pd lead to superior catalytic activity in water media. Moreover, the Suzuki-Miyaura reaction proceed successfully with excellent yield and short reaction time without any loss of activity even after seven consecutive reaction cycles.

Applied Organometallic 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, Application In Synthesis of 613-33-2.

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

Ciftci, Esengul published the artcileSynthesis and characterization of Manganese(II), Cobalt(II) and Copper(II) coordination polymers with a flexible zwitterionic based ligand, COA of Formula: C14H14, the publication is Polyhedron (2021), 115419, database is CAplus.

Four new coordination polymers, formulated as {[MnCl(μ-bipna)](NO₃)·2H₂O}_n (1), {[CoCl₂(μ-bipna)]·2H₂O}_n (2), {[CuCl(μ₄-bipna)]BF₄·2H₂O}_n (3) and {[CuCl(μ₄-bipna)]ClO₄·2H₂O}_n (4) where H₂bipnaBr₂ = 1,1′-(1,1′-biphenyl-4,4′-diylbis(methylene))bis(3-carboxypyridin-1-ium) bromide, were synthesized under solvothermal conditions. Their structures were characterized by single crystal and powder x-ray diffraction analyses, IR spectra (IR) and elemental analyses. Complexes 1, 3 and 4 are isostructural and display 3-fold interpenetrated 2D â†?2D structures with sql topol. and the point symbol 4⁴.6². Complex 2 exhibits a 1D coordination polymer structure, which becomes a stacked 3D supramol. structure by hydrogen bonding and π···π interactions. The structural diversity of the compounds could be due to the conformation of the flexible zwitterionic ligands. In 2, the bipna ligand displays a cis-conformation, while in the other compounds the ligand shows a trans-conformation. The thermal and optical properties of the compounds were studied.

Polyhedron 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, COA of Formula: C14H14.

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

Rizzo, Giorgio published the artcileSilk-Fibroin-Supported Palladium Catalyst for Suzuki-Miyaura and Ullmann Coupling Reactions of Aryl Chlorides, Related Products of catalysis-chemistry, the publication is European Journal of Organic Chemistry (2022), 2022(16), e202101567, database is CAplus.

Pd/SF was tested as a catalyst for the Suzuki-Miyaura and Ullmann coupling reactions of aryl chlorides, in H₂O/EtOH solvent mixture under atm. conditions. Starting from the anal. of the products of the Pd/SF promoted Ullmann reactions of poly-haloarenes, the existence of catalytic pockets where monoat. palladium species could form stable complexes with SF. To shed light on this hypothesis, Pd/SF was characterized by Wide-Angle X-ray Scattering (WAXS) anal., which supported the supposition of catalytic pockets. Finally, using a computational model developed by Mol. Mechanic Energy Minimization was estimated the dimension of the catalytic pocket of Pd/SF (about 15 S), in good agreement with the exptl. results.

European 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, Related Products of catalysis-chemistry.

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