4316-51-2Relevant academic research and scientific papers
TRIARYL PHOSPHINE LIGANDS, PREPARATION METHOD THEREFOR, AND USE IN CATALYSING COUPLING REACTIONS
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Paragraph 0262-263, (2021/05/21)
Provided are triaryl phosphine ligands, as shown in general formulae Ia and Ib, or a mixture thereof, and a preparation method therefor. The invention addresses the deficiencies of biaryl phosphine ligands invented by Buchwald et al. Also provided are a triaryl phosphine coordinated palladium complex, a system composed of triaryl phosphine ligand and a palladium salt or complex, and a use of the triaryl phosphine coordinated palladium complex in catalysing organic reactions, in particular a use in catalysis of coupling reactions involving (pseudo)halogenated aromatic hydrocarbon as substrate.
A Pd/Cu-Free magnetic cobalt catalyst for C-N cross coupling reactions: synthesis of abemaciclib and fedratinib
Hajipour, Abdol R.,Khorsandi, Zahra,Sarfjoo, Mohamad Reza,Varma, Rajender S.
supporting information, p. 5222 - 5229 (2021/07/29)
Herein, the synthesis of a nano-catalytic system comprising magnetic nanoparticles as the core and edible natural ligands bearing functional groups as supports for cobalt species is described. Subsequent to its characterization, the efficiency of the catalyst was investigated for C-N cross-coupling reactions using assorted derivatives of amines and aryl halides. This novel and easily accessible Pd- and Cu-free catalyst exhibited good catalytic activity in these reactions using γ-valerolactone (GVL) at room temperature; good recyclability bodes well for the future application of this strategy. The introduced catalytic system is attractive in view of the excellent efficiency in an array of coupling reactions and its versatility is illustrated in the synthesis of abemaciclib and fedratinib, which are FDA-approved new and significant anti-cancer medicinal compounds that are prepared under green reaction conditions.
Metal-organic frameworks derived CuONPs@C nanocatalysts for synthesizing optoelectronic triarylamine molecules
Kundu, Anu,Kumar, Vadivel Vinod,Anthony, Savarimuthu Philip
, (2020/11/05)
Carbon encapsulated copper oxide nanoparticles (CuONPs@C) fabricated using copper metal organic frameworks (Cu-MOFs) used as reusable nanocatalysts in Ullmann C[sbnd]N coupling reactions for synthesizing optoelectronic triphenylamine (TPA) and carbazole (CBZ) derivatives. The formation of CuONPs in carbon matrix was confirmed by powder X-ray diffraction (PXRD), X-ray photoelectron spectroscopy (XPS) and high-resolution transmission electron microscopy (HR-TEM). The catalytic activity of CuONPs@C was performed with diphenylamine/carbazole with substituted aryl halides in presence of mild K2CO3 base that produced triarylamines with 63–83% yields. Carbazole triarylamines exhibited strong solid state fluorescence (Φf = 14.54–36.32%) with λmax between 370 and 420 nm.
Triptycene carbene palladium compound and application thereof
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Paragraph 0083-0090, (2021/05/08)
The invention discloses a triptycene carbene palladium compound and an application thereof, the structural formula of the triptycene carbene palladium compound is represented by a formula I or a formula II; compared with a conventional metal palladium catalyst, the triptycene carbene palladium compound is simple and convenient to prepare, high in yield and suitable for various substrates, the usage amount of the catalyst can be reduced to one ten thousandth, and the triptycene carbene palladium compound has a good catalytic effect on various metal palladium catalytic reactions; and the triptycene carbene palladium compound has important application value for researching the progress and application of catalytic reaction.
Triptycene carbene allyl palladium compound and application thereof
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Paragraph 0046-0053, (2021/06/02)
The invention relates to a triptycene carbene allyl palladium compound and application thereof. The structural formula of the triptycene carbene allyl palladium compound is a formula I or a fotmula II. Compared with a conventional metal palladium catalyst, the triptycene carbene allyl palladium compound is easy and convenient to prepare, high in yield and suitable for various substrates, the use amount of a catalyst can be reduced to one ten thousandth, and the compound has a good catalytic effect on various metal palladium catalytic reactions. The compound has important application value for researching the progress and application of catalytic reaction.
Triptycene carbene palladium pyridine complex and application thereof
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Paragraph 0044-0050, (2021/06/12)
The invention relates to a triptycene carbene palladium pyridine complex and application thereof. The structural formula of the triptycene carbene palladium pyridine complex is shown as a formula I. The complex provided by the invention is correct in detection. Based on the defects that a metal catalyst used for organic reaction at the present stage cannot be suitable for various substrates, the catalyst in use amount and cost and is difficult to preserve for a long time, the invention provides the triptycene carbene palladium pyridine complex used as a catalyst, wherein the preparation is simple and convenient, the yield is high, the triptycene carbene palladium pyridine complex is suitable for various substrates, the usage amount of the catalyst can be reduced to one ten thousandth, and the triptycene carbene palladium pyridine complex has a better catalytic effect on various metal palladium catalytic reactions. The triptycene carbene palladium pyridine complex has important application value for researching the progress and application of catalytic reaction.
Triptycene carbene tridentate metal coordination compound and application thereof
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Paragraph 0051-0058, (2021/06/22)
The invention relates to a triptycene carbene tridentate metal coordination compound, wherein the structural formula of the triptycene carbene tridentate metal coordination compound is shown in the specification. According to the invention, the compound is correct in detection; based on the problems that a metal catalyst used in an organic reaction at the present stage cannot be suitable for various substrates, the catalyst content is high, the cost is high, long-time storage is difficult, and the like, the triptycene carbene tridentate metal coordination compound provided by the invention is used as a catalyst, the preparation is simple and convenient, the yield is high, the triptycene carbene tridentate metal coordination compound is suitable for various substrates, the usage amount of the catalyst can be reduced to one ten thousandth, and the triptycene carbene tridentate metal coordination compound has a better catalytic effect on various metal catalytic reactions, and has important application value for researching the progress and application of catalytic reaction.
DIARYL AMINE COMPOUND AND METHOD FOR PRODUCING THE SAME
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Paragraph 0218; 0227-0229, (2021/03/16)
The present invention relates to a process for the preparation of diaryl amine compounds. A compound represented by chemical formula 1, a compound represented by chemical formula 2, and a synthetic reagent in a solvent, the synthetic reagent being CsF, KF, 18 - crown -6, K. 2 CO3, [TBAT] The present invention relates to a process for the preparation of diaryl amine compounds comprising a material selected from the group consisting of a (tetrabutylammonium difluorotriphenylsilicate), TBAF (tetrabutylammonium fluoride) and combinations thereof. Chemical Formula 1. Chemical Formula 2. The diaryl amine compound can be synthesized under the absence of a transition metal to be used to synthesize diaryl amine compounds having various substituents.
A Polystyrene-Cross-Linking Tricyclohexylphosphine: Synthesis, Characterization and Applications to Pd-Catalyzed Cross-Coupling Reactions of Aryl Chlorides
Arashima, Junya,Iwai, Tomohiro,Sawamura, Masaya
supporting information, p. 411 - 415 (2019/02/03)
A polystyrene-cross-linking tricyclohexylphosphine (PS-TCP) was synthesized through radical emulsion polymerization of 4-tert-butylstyrene as a monomer and tris(trans-4-styrylcyclohexyl)phosphine as a threefold cross-linker. The PS-TCP showed enhanced ligand performance compared to the corresponding polystyrene-triphenylphosphine hybrid PS-TPP and tricyclohexylphosphine in Pd-catalyzed Suzuki–Miyaura and Buchwald–Hartwig reactions of aryl chlorides.
Systematic Control of the Overlapping Energy Region for an Efficient Intramolecular Energy Transfer: Functionalized Salen-Al/Triphenylamine Guest-Host Assemblies
Kwak, Sang Woo,Jin, Hyomin,Lee, Ji Hye,Hwang, Hyonseok,Kim, Min,Kim, Youngjo,Chung, Yongseog,Lee, Kang Mun,Park, Myung Hwan
, p. 2454 - 2462 (2019/02/28)
A series of triphenylamine (TPA)-containing salen-Al assembly dyads, [salen(3-tBu-5-R)2Al(OC6H4-p-N(C6H5)2)] [salen = N,N′-bis(salicylidene)ethylenediamine; R = H (D1), tBu (D2), Ph (D3), OMe (D4), and NMe2 (D5)], were prepared in good yield (50-80%) and fully characterized by NMR spectroscopy and elemental analysis. Both the UV/vis absorption and photoluminescence (PL) spectra of D1-D4, except for D5, in a tetrahydrofuran solution exhibited dual patterns, which are assignable to the salen-Al-centered α-α? transition (low-energy region) and the TPA-centered α-α? transition (high-energy region). In particular, the emission spectra of the dyads displayed interesting dual-emissive patterns via a significant intramolecular energy transfer (IET) process between the salen-Al moiety and TPA group. Notably, this IET process was systematically tuned by varying the substituents and dominantly observed in the rigid state. More interestingly, compared to the salen-Al complexes (A1-A4) without the TPA group, D1-D4 exhibited enhanced quantum efficiencies. Time-dependent density functional theory calculations on the S1-optimized structures of D1-D5 further supported these experimental results by indicating the existence of independent transition states between the salen-Al moiety and TPA group in the assembly dyads. The present study reports the first example of salen-Al complexes bearing electron-rich TPA moieties.

