An Unprecedented Pd-Catalyzed, Water-Promoted Sequential Oxidative Aminocarbonylation−Cyclocarbonylation Process Leading to 2-Oxazolidinones
作者:Bartolo Gabriele、Pierluigi Plastina、Giuseppe Salerno、Raffaella Mancuso、Mirco Costa
DOI:10.1021/ol071332c
日期:2007.8.1
An unprecedented, PdI2-catalyzed, sequential oxidative aminocarbonylation-cyclocarbonylation process, leading to 2-oxazolidinone derivatives 3 in good to excellent yields starting from readily available alpha,alpha-disubstituted 2-ynylamines 1 and secondary amines 2, is reported. In the case of an alpha-monosubstituted substrate, the initially formed 2-oxazolidinone derivative underwent shift of the double bond to give a 3H-oxazol-2-one derivative in excellent isolated yield.
Auto-Tandem Catalysis in Ionic Liquids: Synthesis of 2-Oxazolidinones by Palladium-Catalyzed Oxidative Carbonylation of Propargylic Amines in EmimEtSO4
作者:Raffaella Mancuso、Asif Maner、Ida Ziccarelli、Christian Pomelli、Cinzia Chiappe、Nicola Della Ca’、Lucia Veltri、Bartolo Gabriele
DOI:10.3390/molecules21070897
日期:——
2-oxazolidinone derivatives carried out using an ionic liquid (1-ethyl-3-methylimidazolium ethyl sulfate, EmimEtSO₄) as the solvent is presented. It is based on the sequential concatenation of two catalytic cycles, both catalyzed by the same metal species (auto-tandem catalysis): the first cycle corresponds to the oxidative monoaminocarbonylation of the triple bond of propargylic amines to give the corresponding