19992-45-1Relevant articles and documents
Ultra-small cobalt nanoparticles from molecularly-defined Co-salen complexes for catalytic synthesis of amines
Beller, Matthias,Chandrashekhar, Vishwas G.,Gawande, Manoj B.,Jagadeesh, Rajenahally V.,Kalevaru, Narayana V.,Kamer, Paul C. J.,Senthamarai, Thirusangumurugan,Zbo?il, Radek
, p. 2973 - 2981 (2020/03/27)
We report the synthesis of in situ generated cobalt nanoparticles from molecularly defined complexes as efficient and selective catalysts for reductive amination reactions. In the presence of ammonia and hydrogen, cobalt-salen complexes such as cobalt(ii)-N,N′-bis(salicylidene)-1,2-phenylenediamine produce ultra-small (2-4 nm) cobalt-nanoparticles embedded in a carbon-nitrogen framework. The resulting materials constitute stable, reusable and magnetically separable catalysts, which enable the synthesis of linear and branched benzylic, heterocyclic and aliphatic primary amines from carbonyl compounds and ammonia. The isolated nanoparticles also represent excellent catalysts for the synthesis of primary, secondary as well as tertiary amines including biologically relevant N-methyl amines.
Nano-Fe3O4@SiO2-SO3H: A magnetic, reusable solid-acid catalyst for solvent-free reduction of oximes to amines with the NaBH3CN/ZrCl4 system
Sadighnia, Leila,Zeynizadeh, Behzad,Karami, Shiva,Abdollahi, Mohammad
, p. 535 - 542 (2019/01/04)
In this study, the immobilization of sulfonic acid on silica-layered magnetite was carried out by the reaction of ClSO3H with silica-layered magnetite. The prepared magnetic nanoparticles of Fe3O4@SiO2-SO3H were then characterized using scanning electron microscopy, energy dispersive X-ray spectroscopy, X-ray diffraction, Fourier transform infrared spectroscopy, vibrating sample magnetometry, and transmission electron microscopy. The sulfonated nanocomposite exhibited excellent catalytic activity and reusability in the reduction of various aldoximes and ketoximes with NaBH3CN in the presence of ZrCl4. All reactions were carried out under solvent-free conditions (r.t. or 75–80°C) within 3–70 min to afford amines in high to excellent yields.
Polycyclic compound and its pharmaceutical composition and application
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Paragraph 0206; 0207; 0208; 0209, (2018/03/26)
The invention discloses a polycyclic compound and its preparation method, pharmaceutical composition and application. The polycyclic compound (I) and its isomer, prodrug, stable isotope derivative ora pharmaceutically acceptable salt have the structure shown in the description. The polycyclic compound has good IDO1 inhibitory effects and can be used for effectively treating, alleviating and/or preventing various related diseases such as tumors and infectious diseases caused by immunosuppression.
The efficient solvent-free reduction of oximes to amines with NaBH3CN catalyzed by ZrCl4/nano Fe3O4 system
Sadighnia, Leila,Zeynizadeh, Behzad
, p. 873 - 878 (2015/03/18)
Reduction of various aldoximes and ketoximes to the corresponding amines was carried out easily and efficiently with NaBH3CN in the presence of ZrCl4/nano Fe3O4 system. The reactions were carried out under solvent-free conditions at room temperature or 75-80°C to afford amines in high to excellent yields.
A new and convenient method for reduction of oximes to amines with NaBH3CN in the presence of MoCl5/NaHSO4? H2O system
Kouhkan, Mehri,Zeynizadeh, Behzad
experimental part, p. 3323 - 3326 (2012/02/04)
Various aldoximes and ketoximes were efficiently reduced to their corresponding amines with NaBH3CN in the presence of MoCl 5/NaHSO4?H2O system. Reduction reactions were carried out in refluxing EtOH or DMF within 0.3-3.8 h to afford the amines in high to excellent yields.
A rapid and practical protocol for solvent-free reduction of oximes to amines with NaBH4/ZrCl4/Al2O3 system
Zeynizadeh, Behzad,Kouhkan, Mehri
experimental part, p. 3448 - 3452 (2012/02/01)
Solvent-free reduction of various aldoximes and ketoximes to the corresponding amines was performed easily and efficiently with NaBH4 in the presence of ZrCl4 supported on Al2O3. The reactions were carried out rapidly (within 2 min) at room temperature to afford the amines in high to excellent yields.
Microwave-accelerated reductive amination between ketones and ammonium acetate
Dong, Li,Aleem, Saadat,Fink, Cynthia A.
experimental part, p. 5210 - 5212 (2010/11/05)
A new procedure for reductive amination between ketones and ammonium acetate has been developed to access a variety of primary amines. This protocol takes advantage of microwave heating to significantly accelerate the reaction and offers a convenient and effective method to access some interesting amines. This new procedure compares favorably to previously reported approaches in terms of practicality, efficiency, and functional group compatibility.
Polymer bound iminodicarbonate: A new ammonia equivalent for solid-phase synthesis of primary amines
Subramanyam
, p. 6537 - 6540 (2007/10/03)
A polymer bound iminodicarbonate has been designed and its use in solid-phase synthesis of primary amines is reported. (C) Elsevier Science Ltd.
N,N-disubstituted arylcycloalkylamines, the salts thereof, pharmaceutical compositions containing these compounds and the use thereof and processes for preparing them
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, (2008/06/13)
The invention relates to N,N-disubstituted arylcycloalkylamines of general formula STR1 wherein n, m, A, X and R1 to R7 are defined as in claim 1, the isomers, isomer mixtures and salts thereof, which have valuable properties, particularly an inhibitory effect on cholesterol biosynthesis.
A Direct Correlation between Dispersion, Metal Area, and Vapour Phase Hydrogenation of Aniline; a First Report
Vishwanathan, Venkataraman,Narayanan, Sankarasubbier
, p. 78 - 80 (2007/10/02)
Aniline hydrogenation activity is correlated with dispersion, crystallite size, and metal area over Rh/Al2O3 catalyst.
