organocatalyst for the atom‐economic conversion of a plethora of alkyl‐ and aryl‐substituted epoxides and isocyanates into oxazolidinones is described. A mechanism was proposed wherein the nucleophilic ring‐opening operation, and oxo‐ and carbamate‐anions stabilization occur cooperatively towards isocyanate fixation.
one-component organocatalyst for the atom-economic transformation of epoxides to oxazolidinones under microwave irradiation. Integrating a positively charged center into phenols over a modular one-step preparation gives rise to a bifunctional system with improved acidity and activity, competent in rapid assembly of epoxides and isocyanates under microwave irradiation in a short reaction time (20–60 min)
A Multicomponent Approach to Oxazolidinone Synthesis Catalyzed by Rare‐Earth Metal Amides
作者:Meixia Zhou、Xizhou Zheng、Yaorong Wang、Dan Yuan、Yingming Yao
DOI:10.1002/cctc.201900221
日期:2019.12.5
Three‐component reaction of epoxides, amines, and dimethyl carbonate catalyzed by rare‐earth metal amides has been developed to synthesize oxazolidinones. 47 examples of 3,5‐disubstituted oxazolidinones were prepared in 13–97 % yields. This is a simple and most practical method which employs easily available substrates and catalysts, and is applicable to a wide range of aromatic and aliphatic amines
[EN] 3,5-SUBSTITUTED-1,3-OXAZOLIDIN-2-ONE DERIVATIVES<br/>[FR] DÉRIVÉS DE 1,3-OXAZOLIDIN-2-ONE 3,5-SUBSTITUÉE
申请人:MERCK & CO INC
公开号:WO2009094265A1
公开(公告)日:2009-07-30
The present invention is directed to 3,5-disubstituted-l,3-oxazolidin~2-one derivatives which are potentiators of metabotropic glutamate receptors, including the mGluR2 receptor, and which are useful in the treatment or prevention of neurological and psychiatric disorders associated with glutamate dysfunction and diseases in which metabotropic glutamate receptors are involved. The invention is also directed to pharmaceutical compositions comprising these compounds and the use of these compounds and compositions in the prevention or treatment of such diseases in which metabotropic glutamate receptors are involved.
Triethylamine Hydroiodide as a Bifunctional Catalyst for the Solvent-Free Synthesis of 2-Oxazolidinones
作者:Ryuichi Nishiyori、Ken Okuno、Seiji Shirakawa
DOI:10.1002/ejoc.202000771
日期:2020.8.23
An efficient synthesis of 2‐oxazolidinones from epoxides and isocyanates under solvent‐free conditions, featuring the use of triethylamine hydroiodide as a simple and effective bifunctional organocatalyst is developed.