Category: 613-33-2

Mirza-Aghayan, Maryam published the artcileSynthesis and characterization of palladium nanoparticles immobilized on graphene oxide functionalized with triethylenetetramine or 2,6-diaminopyridine and application for the Suzuki cross-coupling reaction, Name: 4,4′-Dimethyldiphenyl, the publication is Journal of Organometallic Chemistry (2022), 122160, database is CAplus.

Graphene oxide (GO) was functionalized with two organic ligands, triethylenetetramine (TETA) or 2,6-diaminopyridine (DAP), followed by palladium nanoparticles (Pd NPs) for the synthesis of Pd NPs/GO-TETA and Pd NPs/GO-DAP nanocomposites, resp. The two heterogeneous nanocomposites were fully characterized and their efficiency was investigated for C-C bond formation for the synthesis of biaryl compounds via the Suzuki cross-coupling reaction of aryl halides with arylboronic acid derivatives The obtained results indicated that the Pd NPs/GO-TETA nanocomposite was more effective in the Suzuki coupling reaction as compared to Pd NPs/GO-DAP. Thus, the Suzuki cross-coupling reaction of different aryl halides with arylboronic acid derivatives using Pd NPs/GO-TETA nanocomposite catalyst in the presence of Na₂CO₃ as base in DMF/H₂O (1/1) as solvent at 90¡ãC was carried out to afford the desired biaryl compounds in high to excellent yields (81-100%) and short reaction times (10-90 min). Addnl., Pd NPs/GO-TETA nanocomposite can be recovered and reused for 8 consecutive runs without any apparent loss of its catalytic activity, proving its high stability and potential use in organic transformations.

Journal of 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, Name: 4,4′-Dimethyldiphenyl.

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

Reddy, K. Paul published the artcileRapid gram-scale synthesis of Au/chitosan nanoparticles catalysts using solid mortar grinding, HPLC of Formula: 613-33-2, the publication is New Journal of Chemistry (2021), 45(1), 438-446, database is CAplus.

Owing to the abundant functional groups present in the chitosan polymer, high d. catalytic tiny gold particles with greater dispersion can be anchored on the chitosan powder using simple mortar and pestle. Chitosan-supported gold nanoparticles (NPs) with excellent control of size and shape were rapidly synthesized in gram-scale by solid-grinding without the need of any toxic solvents. The structure of catalysts and products was established by advanced instrumental and spectroscopic methods. The supported gold NPs functions as a heterogeneous catalyst for the homocoupling of phenylboronic acid and the aerobic oxidation of benzyl alc. in water. The catalytic behavior and activity of supported gold NPs was tuned/modulated by varying the ratio of chitosan polymer and gold precursor. Comparative studies showed that the solid chitosan supported gold catalyst exhibits superior catalytic activity and selectivity than the well known hydrophilic polymer-stabilized gold NPs catalysts prepared by the conventional solution-based methods.

New Journal of 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, HPLC of Formula: 613-33-2.

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

Kawase, Misa published the artcileSuzuki-Miyaura Cross-Coupling Reaction with Potassium Aryltrifluoroborate in Pure Water Using Recyclable Nanoparticle Catalyst, Product Details of C14H14, the publication is Synlett (2022), 33(1), 57-61, database is CAplus.

The Suzuki-Miyaura cross-coupling reaction of aryl bromides with potassium aryltrifluoroborates in water catalyzed by linear polystyrene-stabilized PdO nanoparticles (PS-PdONPs) was described to obtain biaryls Ar¹Ar² [Ar¹ = Ph, 2-MeC₆H₄, 3-furyl, etc.; Ar² = 2-MeC₆H₄, 4-MeC₆H₄, 4-MeOC₆H₄, 4-F₃CC₆H₄, 4-AcC₆H₄]. The reaction of aryl bromides having electron-withdrawing groups or electron-donating groups took place smoothly to give the corresponding coupling product in high yields. The catalyst recycles five times without significant loss of catalytic activity although a little bit increase in size of PdNPs was observed after the reaction.

Synlett 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

Uzelac, Marina published the artcileTandem Mn-I Exchange and Homocoupling Processes Mediated by a Synergistically Operative Lithium Manganate, Application of 4,4′-Dimethyldiphenyl, the publication is Angewandte Chemie, International Edition (2021), 60(6), 3247-3253, database is CAplus and MEDLINE.

Pairing lithium and manganese(II) to form lithium manganate [Li₂Mn(CH₂SiMe₃)₄] enables the efficient direct Mn-I exchange of aryliodides, affording transient (aryl)lithium manganate intermediates which in turn undergo spontaneous C-C homocoupling at room temperature to furnish sym. (bis)aryls in good yields under mild reaction conditions. The combination of EPR with X-ray crystallog. studies has revealed the mixed Li/Mn constitution of the organometallic intermediates involved in these reactions, including the homocoupling step which had previously been thought to occur via a single-metal Mn aryl species. These studies show Li and Mn working together in a synergistic manner to facilitate both the Mn-I exchange and the C-C bond-forming steps. Both steps are carefully synchronized, with the concomitant generation of the alkyliodide ICH₂SiMe₃ during the Mn-I exchange being essential to the aryl homocoupling process, wherein it serves as an in situ generated oxidant.

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 C9H21NO3, Application of 4,4′-Dimethyldiphenyl.

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

Hajipour, Abdol R. published the artcileMagnetic chitosan-functionalized cobalt-NHC: Synthesis, characterization and catalytic activity toward Suzuki and Sonogashira cross-coupling reactions of aryl chlorides, Recommanded Product: 4,4′-Dimethyldiphenyl, the publication is Molecular Catalysis (2021), 111573, database is CAplus.

A Cobalt-NHC (N-Heterocyclic carbene) complex is anchored on magnetic chitosan nanoparticles and is assayed its catalytic activity for the reactions of substituted phenylboronic acid 4-RC₆H₄B(OH)₂ (R = Me, OMe, C(O)CH₃) and also phenlacetylene R¹C₆H₄CCH (R¹ = 2-Me, 3-Me, 4-Me, 4-OMe) with derivatives of aryl chlorides R²Cl (R² = 3-methylphenyl, 4-nitrophenyl, pyridin-4-yl, pyridin-2-yl, etc.) were prepared These reactions are of great importance since they are employed for the synthesis of unsym. diarylethynes RCCC₆H₄4-R¹ and biphenyls R²C₆H₄4-R, which belong to a prime class of building blocks. The synthesized nanocatalyst was found to be highly efficient in Suzuki and Sonogashira coupling in terms of their activity and recyclability in polyethylene glycol (PEG) as a green reaction media under conditions of temperatures (70 and 100¡ãC) and Co loading (3 and 6 mol%). To the best of knowledge, this is the first attempt of using cobalt-NHC complex for catalyzing the abovementioned reactions. Moreover, replacing the earth-abundant Cobalt-based catalyst as an alternative to high cost palladium make this approach promising from sustainable chem. view.

Molecular 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 C14H14, Recommanded Product: 4,4′-Dimethyldiphenyl.

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

Wang, Lihong published the artcileNHC and visible light-mediated photoredox co-catalyzed 1,4-sulfonylacylation of 1,3-enynes for tetrasubstituted allenyl ketones, Recommanded Product: 4,4′-Dimethyldiphenyl, the publication is Chemical Science (2022), 13(11), 3169-3175, database is CAplus and MEDLINE.

Described NHC and visible light-mediated photoredox co-catalyzed radical 1,4-sulfonylacylation of 1,3-enynes, providing structurally diversified valuable tetrasubstituted allenyl ketones. Mechanistic studies indicated that ketyl radicals were formed from aroyl fluorides via the oxidative quenching of the photocatalyst excited state, allenyl radicals were generated from chemo-specific sulfonyl radical addition to the 1,3-enynes and finally, the key allenyl and ketyl radical cross-coupling provided tetrasubstituted allenyl ketones.

Chemical Science 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 0, Recommanded Product: 4,4′-Dimethyldiphenyl.

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

Tong, Xue published the artcileNickel-catalyzed defluorinative alkylation of C(sp²)-F bonds, Safety of 4,4′-Dimethyldiphenyl, the publication is Organic Chemistry Frontiers (2021), 8(16), 4533-4542, database is CAplus.

The direct conversion of a C(sp²)-F bond into the corresponding C(sp²)-C(sp³) bond using Al(alkyl)₃ as the coupling partner under nickel catalysis to gave compounds ArR [Ar = 4-MeOC₆H₄, 4-PhC₆H₄, 2-naphthyl, etc.; R = Me, Et] and R¹HC=CR²R³ [R¹ = 4-MeOC₆H₄, 4-PhC₆H₄, phenethyl, etc.; R² = Me, Et; R³ = H, Me, Et] was reported. Intriguingly, aryl fluorides, alkenyl monofluorides and alkenyl gem-difluorides were viable electrophiles in this transformation, constituting the notable feature of this protocol. The success of this chemoselective method relied on the fluorophilicity of the employed aluminum reagent that functions as both the Lewis acid for the activation of the challenging C-F bond and the corresponding alkylating partner. Successful application of this strategy to the late-stage C-F alkylation of fluorinated drug analog was also demonstrated. This method represented another important example of using challenging C-F bonds as alternative electrophiles.

Organic Chemistry Frontiers 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 C6H13NO2, Safety of 4,4′-Dimethyldiphenyl.

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

Cai, Mingzhong published the artcileRecyclable Pd₂dba₃/XPhos/PEG-2000 System for Efficient Borylation of Aryl Chlorides: Practical Access to Aryl Boronates, Recommanded Product: 4,4′-Dimethyldiphenyl, the publication is Synthesis (2022), 54(5), 1339-1346, database is CAplus.

Pd₂dba₃/XPhos in poly(ethylene glycol) (PEG-2000) is shown to be a highly stable and efficient catalyst for the borylation of aryl chlorides with bis(pinacolato)diboron. The borylation reaction proceeds smoothly at 110¡ã, delivering a wide variety of aryl boronates in good to excellent yields with high functional group tolerance. The crude products were easily isolated via simple extraction of the reaction mixture with cyclohexane. Moreover, both expensive Pd₂dba₃ and XPhos in PEG-2000 system could be readily recycled and reused more than six times without loss of catalytic efficiency.

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, Recommanded Product: 4,4′-Dimethyldiphenyl.

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

Wang, Chao-Nan published the artcileElectrochemical coupling halobenzene into biphenyl on a reusable Pd nanoparticle-coated carbon-paper electrode at ambient conditions, Quality Control of 613-33-2, the publication is New Journal of Chemistry (2021), 45(8), 3997-4003, database is CAplus.

Electrochem. organic synthesis (EOS) employing electrons to directly activate the reactants can readily complete the chem. conversion under mild conditions. Here, it presented an efficient electrochem. coupling halobenzene into biphenyl on a Pd nanoparticle-coated cathode. The biphenyl product can be obtained with a yield up to 77% at 35 mA, 6 h (3.9 F mol^-1). In addition, after consecutive fifth run of the coupling reaction, the yield still remained at ca. 40%, suggesting its considerable recyclable capacity. In addition, the preliminary kinetics study via the off-line gas chromatog. anal. of the reaction mixture shows a two-section reaction process, including the introduction process (IP) and fast conversion process (FCP). Further, the estimated reaction kinetics constant value of 0.196 min^-1 for FCP suggests a more effective conversion than that obtained by the previous study. This study adopts a simple way to fabricate a low-cost and reusable Pd electrode, achieving a high-efficiency electrochem. strategy for the Ullmann-type coupling reaction at mild conditions, and holds a great promise to extend this synthesis route to other important organic synthesis.

New Journal of 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 C48H47FeP, Quality Control of 613-33-2.

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

Yang, Chung-Hao published the artcilePhotoaccelerated Suzuki-Miyaura and Sonogashira coupling reactions catalyzed by an Ir-Pd binuclear complex, HPLC of Formula: 613-33-2, the publication is Molecular Catalysis (2022), 112232, database is CAplus.

Reaction of iridium complex [Ir(N,C-dFppy)₂(L)Cl] [L = 5-phenyl-2,8-di-2-pyridinyl-anthyridine] with (CH₃CN)PdCl₂ to yield a hetero-binuclear complex Ir-Pd via ortho-metalation. Complexes were characterized by spectroscopic and crystallog. methods. Complex Ir-Pd showed an excellent catalytic activity for both Suzuki-Miyaura and Sonogashira cross coupling reactions under blue LED irradiation at ambient temperature This catalytic system was operated via light energy harvested by the Ir center, which was able to cooperate with Pd center for the coupling reactions to take place. Effects on these coupling reactions catalyzed by Ir-Pd under photochem. conditions were studied.

Molecular 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, HPLC of Formula: 613-33-2.

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