Synthesis of 2-Arylbenzothiazoles from Nitrobenzenes, Benzylamines, and Elemental Sulfur via Redox Cyclization
作者:Masahiro Teramoto、Takumi Mizuno、Mitsutaka Imoto、Motonori Takeda、Akihiro Nomoto、Akiya Ogawa
DOI:10.1055/s-0041-1737760
日期:2022.3
synthetic method was developed based on redox cyclization for the synthesis of 2-arylbenzothiazoles in good to excellent yields from readily available nitrobenzenes, benzylamines, and elemental sulfur without the use of transition-metal catalysts. This method is remarkable: nitro group reduction, a benzylamine redox reaction, sulfuration, condensation, and cyclization, all proceed in a single step to
开发了一种基于氧化还原环化的可持续先进合成方法,用于在不使用过渡金属催化剂的情况下从现成的硝基苯、苄胺和元素硫合成 2-芳基苯并噻唑,收率良好。这种方法非常显着:硝基还原、苄胺氧化还原反应、硫化、缩合和环化,都在一个步骤中进行,生成杂环。它也是高度原子经济的,不需要任何外部氧化剂或还原剂。