General microwave-assisted protocols for the expedient synthesis of quinoxalines and heterocyclic pyrazines
作者:Zhijian Zhao、David D Wisnoski、Scott E Wolkenberg、William H Leister、Yi Wang、Craig W Lindsley
DOI:10.1016/j.tetlet.2004.04.144
日期:2004.6
Functionalized quinoxalines and heterocyclic pyrazines are expediently prepared in excellent yields (69–99%) from common 1,2-diketone intermediates under microwave irradiation. In addition to being general for a variety of aryl/heteroaryl 1,2-diamines and 1,2-diketones, this protocol suppresses the formation of polymeric species, characteristic of traditional thermal conditions.
方便地在微波辐射下,从常见的1,2-二酮中间体以优异的收率(69–99%)制备功能化的喹喔啉和杂环吡嗪。除了可以广泛用于各种芳基/杂芳基1,2-二胺和1,2-二酮外,该方案还可以抑制传统热条件下的聚合物种类的形成。