A Base-Promoted Tandem Cycloaddition/Air Oxidation Reaction of Electron-Deficient Conjugated Enynes and Hydrazines: Synthesis of Highly Substituted Pyrazoles
作者:Xiuzhao Yu、Junliang Zhang
DOI:10.1002/chem.201202583
日期:2012.10.8
Rapid access: A base‐mediated cycloaddition/oxidation reaction of hydrazines and electron‐deficient 1,3‐conjugated enynes gives pyrazole derivatives, some of which are not easily accessible by other methods (see scheme). The reaction conditions are mild, thus enabling a variety of functional groups to be tolerated.
快速获得:肼与缺电子的1,3共轭烯炔的碱介导的环加成/氧化反应可生成吡唑衍生物,其中某些不易通过其他方法获得(参见方案)。反应条件温和,因此能够容许各种官能团。