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13744-88-2

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13744-88-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13744-88-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,7,4 and 4 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 13744-88:
(7*1)+(6*3)+(5*7)+(4*4)+(3*4)+(2*8)+(1*8)=112
112 % 10 = 2
So 13744-88-2 is a valid CAS Registry Number.

13744-88-2Relevant academic research and scientific papers

Aqueous hydroxide as a base for palladium-catalyzed amination of aryl chlorides and bromides

Kuwano, Ryoichi,Utsunomiya, Masaru,Hartwig, John F.

, p. 6479 - 6486 (2002)

The amination of aryl halides in the presence of inexpensive and air-stable alkali metal hydroxide bases and Pd[P(t-Bu)3]2 as catalyst gave arylamines in high yields. The reactions were conducted with a catalytic amount of cetyltrimethylammonium bromide as phase-transfer agent and either aqueous hydroxide or solid hydroxide in the presence of water. This combination of alkali metal hydroxide base, H2O, and the ammonium salt performed as well as NaO-t-Bu in the amination of p-chlorotoluene with dibutylamine. Hydroxide base was suitable for reactions of a wide range of aryl chlorides and bromides with aliphatic and aromatic amines. Some functional groups that were intolerant of tert-butoxide base, such as esters, enolizable ketones, nitriles, and nitro groups, were tolerated by the combination of hydroxide base, H2O, and cetyltrimethylammonium bromide in toluene solvent.

A copper-based metal-organic framework as an efficient and reusable heterogeneous catalyst for ullmann and goldberg type C-N coupling reactions

Long, Wei,Qiu, Wenge,Guo, Chongwei,Li, Chuanqiang,Song, Liyun,Bai, Guangmei,Zhang, Guizhen,He, Hong,Kuznetsov, Maxim L.

, p. 21178 - 21192 (2015)

A highly porous metal-organic framework (Cu-TDPAT), constructed from a paddle-wheel type dinuclear copper cluster and 2,4,6-tris(3,5-dicarboxylphenylamino)-1,3,5-triazine (H6TDPAT), has been tested in Ullmann and Goldberg type C-N coupling reactions of a wide range of primary and secondary amines with halobenzenes, affording the corresponding N-arylation compounds in moderate to excellent yields. The Cu-TDPAT catalyst could be easily separated from the reaction mixtures by simple filtration, and could be reused at least five times without any significant degradation in catalytic activity.

Design of Benzimidazolyl Phosphines Bearing AlterableP,OorP,N-Coordination: Synthesis, Characterization, and Insights into Their Reactivity

Wong, Shun Man,Choy, Pui Ying,Zhao, Qingyang,Yuen, On Ying,Yeung, Chung Chiu,So, Chau Ming,Kwong, Fuk Yee

supporting information, p. 2265 - 2271 (2021/05/05)

A new series of hemilabile benzimidazolyl phosphines is reported. Entities in this ligand family can be easily assembled and prepared on a large scale via a simple one-pot procedure. X-ray crystallographic analyses show that the Pd metal center can coordinate in different fashions, where it relies on the size of the ?PR2group. With the same ligand scaffold, the ligand having a ?PCy2moiety displays better efficiency in expediting aromatic C-C bond-coupling reactions, while the ligand associated with a ?P-t-Bu2group, in contrast, promotes C-N bond-forming reactions.

One-way valveN-Preparation method of aryl substituted heterocyclic compound (by machine translation)

-

Paragraph 0014-0016; 0023-0024, (2020/11/01)

The invention relates to the technical field of organic chemical synthesis, in particular to an organic chemical synthesis technology. NThe preparation method comprises ?timetime?: 3 molar ratio, reaction 30 - 60 minutes at normal temperature and normal pressure, water adding quenching after reaction, organic solvent extraction 1:1-1 and column chromatography separation (V). Petroleum ether : VEthyl acetate =40:1 - 20:1). NAryl substituted heterocyclic derivatives. Nitrobenzene is used as Ar-H source. N-methylaniline. N-ethylaniline. N-methyl-heterocycles, tetrahydroquinoline, and the like can be used as the amine source. t- BuBuBuBuBuBuBuONa/DMSO/O2 In the system, a direct arylamine reaction of the aromatic ring is achieved. This process has the advantage that the process is simple and high in atomic economy, avoiding the use of expensive transition metals, mild reaction conditions, and environmental-friendly by-products. (by machine translation)

Aryl-Diadamantyl Phosphine Ligands in Palladium-Catalyzed Cross-Coupling Reactions: Synthesis, Structural Analysis, and Application

Sinai, ádám,Simkó, Dániel Cs.,Szabó, Fruzsina,Paczal, Attila,Gáti, Tamás,Bényei, Attila,Novák, Zoltán,Kotschy, András

supporting information, p. 1122 - 1128 (2020/03/03)

Synthesis, temperature-dependent NMR structure investigation and utilization of a new, stable and easily accessible aryl-diadamantylphosphine ligand family is reported. The bulky and electron-rich phosphorus center of the ligand enhances the catalytic activity of palladium in cross-coupling reactions of sterically demanding ortho-substituted aryl halides. In our study, we demonstrated the synthetic applicability of the new phosphine ligands in Buchwald-Hartwig and tosyl hydrazone coupling reactions.

Organic Superbase t-Bu-P4 Catalyzes Amination of Methoxy(hetero)arenes

Shigeno, Masanori,Hayashi, Kazutoshi,Nozawa-Kumada, Kanako,Kondo, Yoshinori

supporting information, p. 5505 - 5508 (2019/08/01)

We report that the organic superbase t-Bu-P4 efficiently catalyzes the amination of methoxy(hetero)arenes with amine nucleophiles such as aniline, indoline, and aminopyridine derivatives. This catalytic reaction is effective for the transformation of elec

Amination of Aromatic Halides and Exploration of the Reactivity Sequence of Aromatic Halides

Yang, Chu,Zhang, Feng,Deng, Guo-Jun,Gong, Hang

, p. 181 - 190 (2019/01/10)

A base-promoted amination of aromatic halides has been developed using a limited amount of dimethylformamide (DMF) or amine as an amino source. Various aryl halides, including F, Cl, Br, and I, have been successfully aminated in good to excellent yields. Although the amination of aromatic halides with amines or DMF is usually considered as an aromatic nucleophilic substitution (SNAr) process, and the reactivity of an aromatic halide is F > Cl > Br > I, the reactivity of aromatic halides in this system was found to be I > Br a‰ F > Cl. This protocol also showed a good regioselectivity for multihalogenated aromatics. This protocol is valuable for industrial application due to the simplicity of operation, the unrestricted availability of amino sources and aromatic halides, transition metal-free conditions, no requirement for solvent, and scalability.

Palladium nanoparticles supported on cysteine-functionalized MNPs as robust recyclable catalysts for fast O- and N-arylation reactions in green media

Hajipour, Abdol R.,Khorsandi, Zahra,Fatemeh Mohammadi Metkazini

, (2019/08/12)

A magnetically robust recyclable nanocatalyst was fabricated by immobilizing of Pd onto the surface of cysteine-functionalized magnetic nanoparticles (MNPs?Cys-Pd). This nanocatalyst was characterized using various techniques such as FT-IR, XRD, TEM, SEM, EDX, VSM, and ICP. The application of catalyst (MNPs?Cys-Pd) was investigated for O-arylation and N-arylation reactions. This phosphine-free complex was found as highly efficient heterogeneous catalyst in green media and mild reaction conditions. In addition, it gave excellent recyclability without significant deactivation after ten cycles.

Solvent-free mechanochemical Buchwald-Hartwig amination of aryl chlorides without inert gas protection

Shao, Qiao-Ling,Jiang, Zhi-Jiang,Su, Wei-Ke

supporting information, p. 2277 - 2280 (2018/05/16)

A solvent-free Buchwald-Hartwig amination had been developed under high-speed ball-milling conditions, which afforded the desired products with moderate to high yields. The addition of sodium sulfate was found to be crucial for improving both the performance and the reproducibility. Comparative solvent-free stirring experiments implicated the importance of mechanical interaction for the transformation, and the inert gas was proved to be unnecessary for this amination.

Chitosan-Supported Ni particles: An Efficient Nanocatalyst for Direct Amination of Phenols

Hajipour, Abdol R.,Abolfathi, Parisa

, (2018/02/21)

A practical method for the direct amination of phenols using 2,4,6-trichloro-1,3,5-triazine (TCT) as an efficient promotor for the activation of phenols in the presence of an efficient and recyclable heterogeneous catalyst prepared by immobilization of nickel particles on triazole modified chitosan is described. This heterogeneous catalyst has demonstrated a promising activity for the conversion of phenolic compounds to their corresponding amine under mild conditions. Moreover, the obtained catalyst can be reused in five consecutive runs with consistent catalytic activity.

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