3-Aryl-2-oxazolidinones through the Palladium-Catalyzed N-Arylation of 2-Oxazolidinones
摘要:
[GRAPHICS]3-Aryl-2-oxazolidinones are obtained in good yields through the palladium-catalyzed N-arylation of 2-oxazolidinones with aryl bromides. The nature of aryl bromides, phosphine ligands, bases, and solvents strongly affects the reaction outcome.
A One-Pot Synthesis of <i>N</i>
-Aryl-2-Oxazolidinones and Cyclic Urethanes by the Lewis Base Catalyzed Fixation of Carbon Dioxide into Anilines and Bromoalkanes
作者:Teemu Niemi、Jesus E. Perea-Buceta、Israel Fernández、Otto-Matti Hiltunen、Vili Salo、Sari Rautiainen、Minna T. Räisänen、Timo Repo
DOI:10.1002/chem.201602338
日期:2016.7.18
catalytic amounts of an organosuperbase such as Barton's base enables this transformation to proceed with high yields and exquisite substrate functional‐group tolerance under ambient CO2 pressure and mild temperature. This report also provides the first proof‐of‐principle for the single‐operation synthesis of elusive seven‐membered ring cyclic urethanes.
COMPOUNDS AND COMPOSITIONS AS INHIBITORS OF CANNABINOID RECEPTOR 1 ACTIVITY
申请人:Liu Hong
公开号:US20100234365A1
公开(公告)日:2010-09-16
The invention provides compounds, pharmaceutical compositions comprising such compounds and methods of using such compounds to treat or prevent diseases or disorders associated with the activity of Cannabinoid Receptor 1 (CB1).
3-Aryl-2-oxazolidinones are obtained in excellent yields through the copper-catalyzed N-arylation of 2-oxazolidinones with a variety of aryl iodides. With aryl halides containing both iodo and bromo substituents, a high C-I/C-Br selectivity can be achieved. The procedure has been successfully applied to the preparation of a key intermediate in the synthesis of linezolid and to develop an expeditious route to toloxatone.
ALIMOV, EH.;ISKANDAROV, S. I., DOKL. AN UZSSR,(1990) N0, S. 42-45