MnO2 mediated sequential oxidation/olefination of alkyl-substituted heteroarenes with alcohols
作者:Chunyan Zhang、Zehua Li、Yanchen Fang、Shaohua Jiang、Maorong Wang、Guoying Zhang
DOI:10.1016/j.tet.2020.130968
日期:2020.3
ligand-free MnO2 mediated sequential oxidation and olefination has been developed for the facile synthesis of a broad range of unsaturated N-heteroazaarenes from simple alkyl-substituted heteroarenes and alcohols. The procedure tolerates a series of functional groups, such as methoxyl, chloro, bromo, iodo, vinyl, phenolic and hetero groups, providing the olefination products in moderate to good yields
已经开发了一种实用且有效的无配体的MnO 2介导的顺序氧化和烯烃化反应,用于从简单的烷基取代的杂芳烃和醇类轻松合成各种不饱和N-杂氮杂芳烃。该方法可耐受一系列官能团,例如甲氧基,氯,溴,碘,乙烯基,酚基和杂基,可提供中等至良好收率的烯化产物。该方案可在温和条件下进行,并使用环境友好的空气作为溶剂。清澈的氧化剂。