I<sub>2</sub>-Mediated transition-metal-free aromatic C–H amination for the synthesis of benzimidazol-2-ones and related heterocycles
作者:Yinggao Meng、Bingnan Wang、Linning Ren、Qiongli Zhao、Wenquan Yu、Junbiao Chang
DOI:10.1039/c8nj03166e
日期:——
benzimidazol-2-one synthesis under transition-metal-free conditions. The required 1,3-diarylurea substrates are readily accessible by the addition of N-substituted arylamines to the corresponding isocyanates. This versatile and operationally simple synthetic process is broadly applicable to a wide range of 1,3-diarylureas and provides facile access to benzimidazol-2-ones and related heterocycles. Moreover,
在无过渡金属的条件下,已建立了一种实用的碘介导的直接芳族CH氨化反应,用于苯并咪唑-2-酮的合成。通过将N-取代的芳基胺添加到相应的异氰酸酯中,可以容易地获得所需的1,3-二芳基脲底物。这种通用且操作简单的合成方法广泛适用于各种1,3-二芳基脲,可轻松获得苯并咪唑-2-酮和相关杂环。而且,当前的CH氨基化反应也可以直接由二取代的胺和异氰酸酯进行,而无需以可扩展的方式纯化尿素中间体。