Iron-promoted sulfur sequestration for the substituent-dependent regioselective synthesis of tetrazoles and guanidines
作者:Venkata Bhavanarushi Pendem、Ramana Tamminana、Madhavi Nannapaneni
DOI:10.1080/17415993.2021.1909589
日期:2021.9.3
versatile synthetic methodology for the construction of tetrazoles and guanidines in the presence of an eco-friendly, inexpensive, easily available iron reagent. Aromatic thioureas with electron-donating substituents produced their respective target products in quantitative yield. In contrast, when electron-withdrawing substituted aromatic thioureas were used, the expected products were obtained in reduced
摘要 我们已经建立了一种简便、通用的合成方法,用于在生态友好、廉价、易得的铁试剂存在下构建四唑和胍。具有给电子取代基的芳香族硫脲以定量产率产生了它们各自的目标产物。相比之下,当使用吸电子取代的芳香族硫脲时,所获得的预期产物的产率会降低。然而,在中等温度下以良好的产率获得了所需的产物。此外,机理研究表明,合成路线涉及铁基后续加硫和脱硫反应。