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.
3-PYRIMIDIN-4-YL-OXAZOLIDIN-2-ONES AS INHIBITORS OF MUTANT IDH
申请人:VESTAS WIND SYSTEMS A/S
公开号:US20140235620A1
公开(公告)日:2014-08-21
The invention is directed to a compound of formula (I) or a pharmaceutically acceptable salt thereof, wherein R
1
-R
6
are defined herein. The invention is also directed to compositions containing a compound of formula (I) and to the use of such compounds in the inhibition of mutant IDH proteins having a neomorphic activity. The invention is further directed to the use of a compound of formula (I) in the treatment of diseases or disorders associated with such mutant IDH proteins including, but not limited to, cell-proliferation disorders, such as cancer.
Influence of the catalyst structure in the cycloaddition of isocyanates to oxiranes promoted by tetraarylstibonium cations
作者:Mengxi Yang、Nilanjana Pati、Guillaume Bélanger-Chabot、Masato Hirai、François P. Gabbaï
DOI:10.1039/c8dt00702k
日期:——
been evaluated as catalysts for the cycloaddition of oxiranes and isocyanates under mild conditions. While all stibonium cations favor the 3,4-oxazolidinone products, the reactivities of 5+ and 6+ are hindered by the ancillary amino donor which quenches the Lewis acidity of the antimony center. A comparison of the other stibonium cations shows that 4+ is the most selective catalyst.
Potassium phosphate-catalyzed one-pot synthesis of 3-aryl-2-oxazolidinones from epoxides, amines, and atmospheric carbon dioxide
作者:Ue Ryung Seo、Young Keun Chung
DOI:10.1039/c6gc02934e
日期:——
Potassium phosphate was found to be a highly active catalyst in the three-component cycloaddition of amine, epoxide, and carbondioxide in DMF at ambient temperature to form 3-aryl-2-oxazolidinones. Atmospheric CO2...
Mechanistic Investigation of the Reaction of Epoxides with Heterocumulenes Catalysed by a Bimetallic Aluminium Salen Complex
作者:Christopher Beattie、Michael North
DOI:10.1002/chem.201400007
日期:2014.6.23
The bimetallic aluminium(salen) complex [(Al(salen))2O] is known to catalyse the reaction between epoxides and heterocumulenes (carbondioxide, carbon disulfide and isocyanates) leading to five‐membered ring heterocycles. Despite their apparent similarities, these three reactions have very different mechanistic features, and a kinetic study of oxazolidinone synthesis combined with previous kinetic