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.
描述了通过将二氧化碳直接插入容易获得的苯胺和二溴代烷烃中的,具有药学意义的N-芳基-恶唑烷酮的多组分组装方法。添加催化量的有机超碱(如Barton碱)可使该转化在环境CO 2压力和温和温度下以高收率和出色的底物官能团耐受性进行。该报告还为难以捉摸的七元环环状氨基甲酸酯的单操作合成提供了第一个原理证明。