16495-67-3Relevant articles and documents
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)
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.
Indenyl rhodium complexes. Synthesis and catalytic activity in reductive amination using carbon monoxide as a reducing agent
Runikhina, Sofiya A.,Arsenov, Mikhail A.,Kharitonov, Vladimir B.,Sovdagarova, Elizaveta R.,Chusova, Olga,Nelyubina, Yulia V.,Denisov, Gleb L.,Usanov, Dmitry L.,Chusov, Denis,Loginov, Dmitry A.
, p. 106 - 112 (2018)
Indenyl-ligated rhodium(III) catalyst [(η5-indenyl)RhX2]n (1) is reported for the synthesis of alkylated amines via catalytic reductive amination using carbon monoxide as a reducing agent. Water as a solvent was found to b
Enhancing the efficiency of the ruthenium catalysts in the reductive amination without an external hydrogen source
Afanasyev, Oleg I.,Chusov, Denis,Fatkulin, Artemy R.,Tsygankov, Alexey A.
, p. 404 - 409 (2022/01/13)
Catalytic reductive reactions are essential for laboratory and industrial-scale organic synthesis. However, the nowadays trend is the development of new, progressively more complicated reducing systems, which hinders the application of such highly efficie
Phosphine ligands in the ruthenium-catalyzed reductive amination without an external hydrogen source
Makarova, Maria,Afanasyev, Oleg I.,Kliuev, Fedor,Nelyubina, Yulia V.,Godovikova, Maria,Chusov, Denis
, (2021/04/15)
A systematic study of the phosphine additives influence on the activity of a ruthenium catalyst in reductive amination without an external hydrogen source was carried out. [CymeneRuCl2]2 was used as a reference catalyst, and a broad set of phosphines including Alk3P, Alk2ArP, Ar3P and X3P was screened. Three complexes of general formula (Cymene)RuCl2PR3 were isolated in a pure form, and their catalytic activity was compared with the in situ generated complexes. Nonhindered triarylphosphines with electron acceptor groups were found to be the most perspective activating agents, increasing the activity of the catalyst approx. six times, Alk2ArP ligands have less noticeable influence, while trialkylphosphines strongly deactivate the ruthenium catalyst.
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
Carbon monoxide-driven osmium catalyzed reductive amination harvesting WGSR power
Afanasyev, Oleg I.,Biriukov, Klim O.,Chusov, Denis,Godovikova, Maria,Loginov, Dmitry A.,Nelyubina, Yulia V.,Tsygankov, Alexey A.,Vasilyev, Dmitry V.,Vinogradov, Mikhail M.
, p. 4922 - 4930 (2021/07/26)
Herein, we present the first example of Os-catalyzed efficient reductive amination under water-gas shift reaction conditions. The developed catalytic systems are formedin situin aqueous solutions, employ as small as 0.0625 mol% osmium and are capable of delivering reductive amination products for a broad range of aliphatic and aromatic carbonyl compounds and amines. The scope of the reaction, active catalytic systems, possible limitations of the method and DFT-supported mechanistic considerations are discussed in detail in the manuscript.
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.
Hydrogen-Borrowing Amination of Secondary Alcohols Promoted by a (Cyclopentadienone)iron Complex
Aiolfi, Francesco,Bai, Xishan,Cettolin, Mattia,Dal Corso, Alberto,Gennari, Cesare,Piarulli, Umberto,Pignataro, Luca
, p. 3545 - 3555 (2019/09/09)
Thanks to a highly active catalyst, the scope of the (cyclopentadienone)iron complex-promoted 'hydrogen-borrowing' (HB) amination has been expanded to secondary alcohols, which had previously been reported to react only in the presence of large amounts of co-catalysts. A range of cyclic and acyclic secondary alcohols were reacted with aromatic and aliphatic amines giving fair to excellent yields of the substitution products. The catalyst was also able to promote the cyclization of diols bearing a secondary alcohol group with primary amines to generate saturated N-heterocycles.
Fluorene Complexes of Group 9 Metals: Fluorene Effect and Application for Reductive Amination
Kharitonov, Vladimir B.,Podyacheva, Evgeniya,Nelyubina, Yulia V.,Muratov, Dmitry V.,Peregudov, Alexander S.,Denisov, Gleb,Chusov, Denis,Loginov, Dmitry A.
supporting information, p. 3151 - 3158 (2019/08/26)
The η6-fluorene cyclopentadienyl complexes [(η5-C5R5)M(η6-fluorene)](SbF6)2 (1: M = Co, R = Me; 2a: M = Rh, R = H; 2b: M = Ir, R = H) were synthesized by the iodide abstraction f
Synthesis of the cyclopentadienone rhodium complexes and investigation of their catalytic activity in the reductive amination of aldehydes in the presence of carbon monoxide
Pototskiy, Roman A.,Afanasyev, Oleg I.,Nelyubina, Yulia V.,Chusov, Denis,Kudinov, Alexander R.,Perekalin, Dmitry S.
supporting information, p. 6 - 11 (2017/03/02)
Reaction of bis(p-tolyl-propargyl)-tosylamide with [(cod)RhCl]2in the presence of CO gives the cyclopentadienone complex [(Cpd’)Rh(CO)Cl]n(Cpd’ = TsN(CH2)2C4(Tol)2CO). Its dissolution in DM