184017-91-2Relevant academic research and scientific papers
Cyclobutadiene Arene Complexes of Rhodium and Iridium
Shvydkiy, Nikita V.,Trifonova, Evgeniya A.,Shved, Andrei M.,Nelyubina, Yulia V.,Chusov, Denis,Perekalin, Dmitry S.,Kudinov, Alexander R.
, p. 3025 - 3031 (2016)
Reactions of [(C2H4)2RhCl]2 or [(coe)2RhCl]2 (coe = cyclooctene) with AgPF6 and arenes, followed by addition of 3-hexyne, give the cyclobutadiene complexes [(C4Et
Reductive amination catalyzed by iridium complexes using carbon monoxide as a reducing agent
Moskovets, Alexey P.,Usanov, Dmitry L.,Afanasyev, Oleg I.,Fastovskiy, Vasilii A.,Molotkov, Alexander P.,Muratov, Karim M.,Denisov, Gleb L.,Zlotskii, Semen S.,Smol'Yakov, Alexander F.,Loginov, Dmitry A.,Chusov, Denis
, p. 6384 - 6387 (2017)
Development of novel, sustainable catalytic methodologies to provide access to amines represents a goal of fundamental importance. Herein we describe a systematic study for the construction of a variety of amines catalyzed by a well-defined homogeneous ir
Reusable Co-nanoparticles for general and selectiveN-alkylation of amines and ammonia with alcohols
Beller, Matthias,Gawande, Manoj B.,Jagadeesh, Rajenahally V.,Kadam, Ravishankar G.,Li, Xinmin,Ma, Zhuang,Petr, Martin,Zbo?il, Radek,Zhou, Bei
, p. 111 - 117 (2022/01/06)
A general cobalt-catalyzedN-alkylation of amines with alcohols by borrowing hydrogen methodology to prepare different kinds of amines is reported. The optimal catalyst for this transformation is prepared by pyrolysis of a specific templated material, which is generatedin situby mixing cobalt salts, nitrogen ligands and colloidal silica, and subsequent removal of silica. Applying this novel Co-nanoparticle-based material, >100 primary, secondary, and tertiary amines includingN-methylamines and selected drug molecules were conveniently prepared starting from inexpensive and easily accessible alcohols and amines or ammonia.
Enhanced Hydride Donation Achieved Molybdenum Catalyzed Direct N-Alkylation of Anilines or Nitroarenes with Alcohols: From Computational Design to Experiment
Huang, Ming,Huang, Yong-Liang,Ke, Zhuofeng,Lan, Xiao-Bing,Li, Weikang,Liu, Jiahao,Liu, Yan,Ye, Zongren,Zhao, Cunyuan
, p. 10377 - 10382 (2021/08/31)
An example of homogeneous Mo-catalyzed direct N-alkylation of anilines or nitroarenes with alcohols is presented. The DFT aimed design suggested the easily accessible bis-NHC-Mo(0) complex features a strong hydride-donating ability, achieving effective N-alkylation of anilines or challenging nitroarenes with alcohols. The enhanced hydride-donating strategy should be useful in designing highly active systems for borrowing hydrogen transformations.
Easy Access to Versatile Catalytic Systems for C?H Activation and Reductive Amination Based on Tetrahydrofluorenyl Rhodium(III) Complexes
Kharitonov, Vladimir B.,Runikhina, Sofiya A.,Nelyubina, Yulia V.,Muratov, Dmitry V.,Chusov, Denis,Loginov, Dmitry A.
supporting information, p. 10903 - 10912 (2021/06/28)
On the basis of the 1,2,3,4-tetrahydrofluorenyl ligand, a simple approach was developed to new effective rhodium catalysts for the construction of C?C and C?N bonds. The halide compounds [(η5-tetrahydrofluorenyl)RhX2]2 (2
Diethylsilane as a Powerful Reagent in Au Nanoparticle-Catalyzed Reductive Transformations
Louka, Anastasia,Kidonakis, Marios,Saridakis, Iakovos,Zantioti-Chatzouda, Elisavet-Maria,Stratakis, Manolis
, p. 3508 - 3514 (2020/06/02)
Diethylsilane (Et2SiH2), a simple and readily available dihydrosilane, that exhibits superior reactivity, as compared to monohydrosilanes, in a series of reductive transformations catalyzed by recyclable and reusable Au nanoparticles (1 mol-%) supported on TiO2. It reduces aldehydes or ketones almost instantaneously at ambient conditions. It can be used in a one pot rapid reductive amination procedure, in which premixing of aldehyde and amine is required prior to the addition of the reducing agent and the catalyst, even in a protic solvent. An unprecedented method for the synthesis of N-arylisoindolines is also shown in the reductive amination between o-phthalaldehyde and anilines. In this transformation, it is proposed that the intermediate N,2-diphenylisoindolin-1-imines are reduced stepwise to the isoindolines. Finally, Et2SiH2 readily reduces amides into amines in excellent yields and shorter reaction times relative to previously known analogous nano Au(0)-catalyzed protocols.
First used of Alkylbenzimidazole-Cobalt(II) complexes as a catalyst for the N-Alkylation of amines with alcohols under solvent-free medium
?zdemir, ?smail,?zdemir, Nam?k,?ahin, Neslihan,Gürbüz, Nevin,Y?ld?r?m, ?lkay
, (2020/04/28)
In this study, alkylbenzimidazole-cobalt(II)-catalyzed direct N-alkylation reactions of amines with alcohols derivatives have been investigated under solvent-free medium. For this purpose, a series of cobalt(II) complexes bearing N-alkylbenzimidazole complexes have been synthesized and novel complexes fully characterized by elemental analysis, FT-IR, 1H NMR and, 13C{1H} NMR spectroscopies. Also, the structure of the complex 2a has been confirmed by X-ray crystallography. Generally, the N-alkylating reaction is usually performed in toluene with various metal complexes including cobalt. In this catalytic study of complexes, 2a-c has carried out in without solvent and alcohol acted both as solvent and reactant. Conversion and selectivity of amine products according to imine products for alkylation reactions have been seen high yield in medium solvent-free relative to in toluene.
Half-Sandwich Ru(II) Complexes with N,O-Chelate Ligands: Diverse Catalytic Activity for Amine Synthesis in Water
Yun, Xue-Jing,Ling, Chun,Deng, Wei,Liu, Zhen-Jiang,Yao, Zi-Jian
, p. 3830 - 3838 (2020/11/13)
Several types of β-ketoamino based N,O-coordinate half-sandwich ruthenium complexes have been synthesized in moderate to good yields. The stable ruthenium complexes displayed good and diverse catalytic efficiency in reductive amination between aldehydes and amines in aqueous solution. The method gave a facile route for one-pot synthesis of diverse complicated amines with a low catalyst loading by using cheap and less-toxic HCOOH or clean H2 as hydrogen source. Catalyst Ru1 showed the highest catalytic activity of 190 h-1 TOF value in the reductive amination reaction of benzaldehyde with aniline. The corresponding amine products were furnished in excellent yields under the standard catalysis system. The efficient and diverse catalytic activity, broad substance scope, mild conditions, and environmentally benign solvent made this system potentially applicable in industrial production. Ruthenium complexes were characterized using NMR, elemental analysis, and IR techniques to confirm their structure.
Alkyl formates as reagents for reductive amination of carbonyl compounds
Afanasyev, Oleg I.,Cherkashchenko, Ilia,Kuznetsov, Anton,Kliuev, Fedor,Semenov, Sergey,Chusova, Olga,Denisov, Gleb,Chusov, Denis
, p. 112 - 113 (2020/03/03)
Alkyl formates in the presence of basic additives can serve as a reagent in the direct reductive amination of carbonyl compounds. The developed procedure can be applied to various aldehydes and ketones with electron donating and electron withdrawing groups.
Tris(pyrazolyl)borate rhodium complexes. Application for reductive amination and esterification of aldehydes in the presence of carbon monoxide
Kharitonov, Vladimir B.,Ostrovskii, Vladimir S.,Nelyubina, Yulia V.,Muratov, Dmitry V.,Chusov, Denis,Loginov, Dmitry A.
, (2020/09/09)
The halide complexes TpRhCl2(MeOH) and TpMe2RhI2(CO) (Tp = hydrotris-(pyrazolyl)borate; TpMe2 = hydrotris-(3,5-dimethylpyrazolyl)borate) were synthesized by reactions of RhCl3 with K[Tp] in methanol and TpMe2Rh(CO)2 with iodine, respectively. Reactions of TpMe2RhCl2(MeOH) and TpMe2RhI2(CO) with 1,10-phenanthroline afford the phenanthroline derivatives [TpMe2Rh(phen)X]+ (X = Cl, I). The structures of TpRhCl2(MeOH) and TpRhI2(CO) were determined by X-ray diffraction. Tris(pyrazolyl)borate rhodium complexes effectively catalyze the reductive amination and the reductive esterification of aldehydes in the presence of carbon monoxide.
