Application of primary halogenated hydrocarbons for the synthesis of 3-aryl and 3-alkyl indolizines
作者:Yan Liu、Huayou Hu、Junyu Zhou、Wenhui Wang、Youliang He、Chao Wang
DOI:10.1039/c7ob00980a
日期:——
properties that make it suitable for numerous applications in many fields, such as biology, medicine and materials. However, the synthesis of 3-alkyl indolizines from bulky primary halogenated alkanes has not yet been reported. Herein, a transition-metal-free synthetic route to 3-aryl and 3-alkyl indolizines from electron-deficient alkenes, pyridines and primary halogenated hydrocarbons has been reported
吲哚利嗪是一种重要的杂环化合物,具有多种令人感兴趣的特性,使其适用于生物学,医学和材料等许多领域的众多应用。然而,尚未报道由庞大的伯卤代烷烃合成3-烷基吲哚嗪。在此,首次报道了利用串联反应从缺电子的烯烃,吡啶和伯卤代烃生成无过渡金属的3-芳基和3-烷基吲哚并嗪的合成路线。该方法的关键步骤是四氢吲哚嗪中间体与2,2,6,6-四甲基哌啶-N的氧化脱氢芳构化-氧基(TEMPO)作为氧化剂。该协议的优势在于它使用易于获得的低成本起始材料,无过渡金属的条件及其可扩展性。