Fe/S-Catalyzed Redox Condensation of <i>o</i>-Nitrophenols with Isothiocyanates to 2-Aminobenzoxazoles
作者:Le Anh Nguyen、Supasorn Phaenok、Duc Long Le、Thi Thu Tram Nguyen、Quoc Anh Ngo、Thanh Binh Nguyen
DOI:10.1021/acs.orglett.3c01897
日期:2023.7.14
and related sulfur containing compounds should be treated in a safe way to lower their adverse health and environmental effects, especially in large scale syntheses. As a proof of concept, we report herein an example of in situ recycling of sulfur byproduct to reductant in the synthesis of bioactive 2-aminobenzoxazoles 3. Using an Fe/S catalytic system, this heterocyclic scaffold could be obtained from
作为异氰酸酯化学中经常遇到的副产物,硫化氢和相关的含硫化合物应以安全的方式进行处理,以降低其对健康和环境的不利影响,特别是在大规模合成中。作为概念证明,我们在此报告了在生物活性 2-氨基苯并恶唑3合成中将硫副产物原位回收为还原剂的示例。使用Fe/S催化系统,该杂环支架可以由邻硝基苯酚1与异硫氰酸酯2通过直接氧化还原缩合获得,其中1的硝基被2的硫部分还原。