Synthesis of Pyrroles from β-Enamines and Nitroolefins Catalyzed by I<sub>2</sub> under High-speed Vibration Milling (HSVM)
作者:Hui Xu、Yujin Li、Mengming Xing、Jianhong Jia、Liang Han、Qing Ye、Jianrong Gao
DOI:10.1246/cl.141102
日期:2015.4.5
A solvent-free reaction, using a high-speed vibration milling (HSVM) technique, has been developed for the synthesis of polysubstituted pyrroles from β-enamines and nitroolefins as the raw materials, by using iodine as the catalyst. The influences of the vibration frequency and the reaction time were investigated and a series of 2,3,4-polysubstituted pyrroles were obtained in good yields at short reaction times (20 min) under the HSVM condition. It is an efficient, simple, and moderate approach for synthesizing polysubstituted pyrroles under the HSVM conditions.
一种无溶剂反应,采用高速振动研磨(HSVM)技术,已经被开发用于从β-烯胺和硝基烯烃合成多取代吡啶,使用碘作为催化剂。研究了振动频率和反应时间的影响,在HSVM条件下,在短时间(20分钟)内获得了一系列产率良好的2,3,4-多取代吡啶。这是一种高效、简单且温和的方法,用于在HSVM条件下合成多取代吡啶。