Synthesis of Tetrasubstituted NH Pyrroles and Polysubstituted Furans via an Addition and Cyclization Strategy
作者:Zheng-Hui Guan、Liang Li、Mi-Na Zhao、Zhi-Hui Ren、Jianli Li
DOI:10.1055/s-0031-1289993
日期:2012.2
enamino esters with nitroolefins provides a straightforward and general method for the synthesis of tetrasubstituted NH pyrroles. This novel method tolerates a wide range of functionality, and allows for rapid elaboration of the nitroolefins into a variety of substituted pyrroles in good yields. Further, an efficient KOAc-promoted addition and cyclization protocol toward substituted furans has been
FeCl 3催化的烯胺酯与硝基烯烃的加成和环化为合成四取代的NH吡咯提供了一种简单直接的通用方法。这种新颖的方法可耐受多种功能,并允许以高收率将硝基烯烃快速精制为各种取代的吡咯。此外,也已经描述了针对取代的呋喃的有效KOAc促进的加成和环化方案。 四取代的NH吡咯-多取代的呋喃-加成-环化