The direct reductive N-benzylation of imines by reaction with benzyl bromide derivatives, in the presence of [RuCl2(p-cymene)]2catalyst and PhSiH3, is performed under mild conditions without additional base. This reaction proceeds by a tandem iminehydrosilylation/nucleophilic substitution with benzyl bromide derivatives to result the tertiary amines.
Ruthenium nanoparticle catalyzed selective reductive amination of imine with aldehyde to access tertiary amines
作者:Bin Li、Shun Liu、Qiao Lin、Yan Shao、Shiyong Peng、Yibiao Li
DOI:10.1039/c8cc05437a
日期:——
of the most frequently used transformations in organic synthesis. Herein, we developed a novel ruthenium nanoparticle embedded ordered mesoporous carbon catalyst (Ru–OMC) and a new hydrosilylation process for the synthesis of tertiary amines. We present a direct reductive amination of imines (CN bond) with aldehydes (CO bond) using hydrosilane as the reducing reagent under mild conditions. Moreover,
Cyclopentadienyl N-heterocyclic carbene–nickel complexes as efficient pre-catalysts for the hydrosilylation of imines
作者:Linus P. Bheeter、Mickaël Henrion、Michael J. Chetcuti、Christophe Darcel、Vincent Ritleng、Jean-Baptiste Sortais
DOI:10.1039/c3cy00514c
日期:——
The in situ generated nickel hydride complex, [Ni(Mes2NHC)HCp], and its cationic analogue, [Ni(Mes2NHC)(NCMe)Cp](PF6), are efficient and chemoselective pre-catalysts for the hydrosilylation of both aldimines and ketimines under mild conditions.
Amine Synthesis through Mild Catalytic Hydrosilylation of Imines using Polymethylhydroxysiloxane and [RuCl2(arene)]2 Catalysts
作者:Bin Li、Jean-Baptiste Sortais、Christophe Darcel、Pierre H. Dixneuf
DOI:10.1002/cssc.201100585
日期:2012.2.13
Tolerate silicone! The stable [RuCl2(p‐cymene]2 complex is an efficient catalyst for the direct chemoselective hydrosilylation of functionalized aldimines and ketimines into amines, usingpolymethylhydroxysiloxane as an inexpensive, stable, and safe hydrosilane source. The catalysis operates in ethanol, under air at room temperature, and tolerates the ketone ester and alkene functionality.