Selenium-catalyzed intramolecular atom- and redox-economical transformation of<i>o</i>-nitrotoluenes into anthranilic acids
作者:Yiming Li、Yuhong Wang、Tilong Yang、Zhenyang Lin、Xuefeng Jiang
DOI:10.1039/d0gc04407e
日期:——
Anthranilic acids (AAs) are significant basic chemicals used in pharmaceuticals, agrochemicals, dyes, fragrances, etc. Superfluous steps are always involved in obtaining AAs. Herein, we demonstrate a straightforward strategy to transform abundant o-nitrotoluenes into biologically and pharmaceutically significant AAs without any extra reductants, oxidants and protecting groups. Various sensitive groups
邻氨基苯甲酸(AAs)是用于制药,农用化学品,染料,香料等的重要基础化学品。获得AA总是涉及多余的步骤。本文中,我们证明了一种直接的策略即可将丰富的邻硝基甲苯转化为具有生物学和药学意义的AA,而无需任何额外的还原剂,氧化剂和保护基。在该转化中可以容许各种敏感基团,例如卤素,硫化物,醛,吡啶,喹啉等。通过几乎定量的硒回收,可以有效地实现一百克规模的操作。进一步的机理研究和DFT计算揭示了拟议的原子交换过程以及硒物种的关键作用。