1821-36-9Relevant articles and documents
Synthesis and characterization of bidentate NHC-Pd complexes and their role in amination reactions
Demir, Serpil,?zdemir, Ismail,?etinkaya, Bekir,Arslan, Hakan,VanDerveer, Don
, p. 195 - 200 (2011)
The new well-defined and air-stable ortho-xylyl-linked N-heterocyclic carbene (NHC) Pd complexes (2a-d) have been synthesized and characterized by elemental analysis, 1H NMR, 13C NMR, IR spectroscopy, and single crystal X-ray diffraction studies. The palladium atom in the complex 2a lies on a crystallographic mirror plane and can be described as having a square-planar coordination environment with the carbene atoms of the benzimidazole rings of the ligand occupying two coordination sites in cis positions. Two further coordination sites are occupied by chloride ligands. The benzimidazole rings are connected to each other by an ortho-xylyl bridge. The catalytic activity of these palladium complexes has been tested in the coupling reactions of various N-containing substrates with bromobenzene. A preliminary catalytic study shows that the bis(NHC)-Pd complexes are highly active in the Buchwald-Hartwig amination reaction.
THE ACTUAL MERCURATING SPECIES IN THE MERCURATION OF AROMATIC AMINES AND THE AMINOMERCURATION OF OLEFINS
Barluenga, Jose,Bayon, Ana M.,Perez-Prieto, Julia,Asensio, Gregorio
, p. 5053 - 5062 (1984)
The reactivity of ?- and ?- N-mercurated and C-mercurated amines as electrophiles towards olefins and aromatic amines is studied under different reaction conditions.Depending on the ionic or covalent character of the starting mercury(II) salt, dissociated
ELECTROLYTIC BEHAVIOR OF TETRASUBSTITUTED IMINIUM SALT IN ACETONITRILE.
Kunai,Harada,Nishihara,Yanagi,Sasaki
, p. 2442 - 2446 (1983)
Cathodic behavior of N-cyclohexylidenepyrrolidinium salt (1) and N-cyclohexylideneaniline (2) in acetonitrile has been studied by means of dc polarography, cyclic voltammetry and preparative electrolysis under controlled potential conditions. Compound 1 e
Oxidative three-component carboamination of vinylarenes with alkylboronic acids
Gockel, Samuel N.,Lee, SangHyun,Gay, Brittany L.,Hull, Kami L.
, p. 5166 - 5171 (2021)
The three-component carboamination of alkenes is of significant interest due to the ease by which functionalized amines can be produced from readily available chemical building blocks. Previously, a variety of carbon-centered radical precursors have been
Visible-light-mediated tungsten-catalyzed C-H amination of unactivated alkanes with nitroarenes
Wang, Qing,Ni, Shengyang,Wang, Xiaochen,Wang, Yi,Pan, Yi
, p. 678 - 685 (2022/02/14)
Alkylamines are important motifs in pharmaceutical and material sciences. The existing reports of C-H amination are limited to ammonia, diazo and azide nitrogen sources. This work describes a rapid construction of C-N bonds from accessible nitroarene and alkane feedstock under decatungstate catalysis. A variety of C-H precursors including gaseous, linear, cyclic and benzylic hydrocarbons could adopt this protocol to afford the corresponding alkylamines in high efficiency. [Figure not available: see fulltext.]
Reductive amination of ketones/aldehydes with amines using BH3N(C2H5)3as a reductant
Zou, Qizhuang,Liu, Fei,Zhao, Tianxiang,Hu, Xingbang
supporting information, p. 8588 - 8591 (2021/09/04)
Herein, we report the first example of efficient reductive amination of ketones/aldehydes with amines using BH3N(C2H5)3 as a catalyst and a reductant under mild conditions, affording various tertiary and secondary amines in excellent yields. A mechanistic study indicates that BH3N(C2H5)3 plays a dual function role of promoting imine and iminium formation and serving as a reductant in reductive amination. This journal is
Palladium supported on magnesium hydroxyl fluoride: An effective acid catalyst for the hydrogenation of imines and N-heterocycles
Agbossou-Niedercorn, Francine,Corre, Yann,Dongare, Mohan K.,Kemnitz, Erhard,Kokane, Reshma,Michon, Christophe,Umbarkar, Shubhangi B.
supporting information, p. 19572 - 19583 (2021/11/04)
Palladium catalysts supported on acidic fluorinated magnesium hydroxide Pd/MgF2-x(OH)x were prepared through precipitation or impregnation methods. Applications to the hydrogenation of various aldimines and ketimines resulted in good catalytic activities at mild temperatures using one atmosphere of hydrogen. Quinolines, pyridines and other N-heterocycles were successfully hydrogenated at higher temperature and hydrogen pressure using low palladium loadings and without the use of any acid additive. Such reactivity trend confirmed the positive effect of the Br?nsted and Lewis acid sites from the fluorinated magnesium hydroxide support resulting in the effective pre-activation of N-heterocycle substrates and therefore in the good catalytic activity of the palladium nanoparticles during the hydrogenations. As demonstrated in the hydrogenation of imines, the catalyst was recycled up to 10 times without either loss of activity or palladium leaching. This journal is
