Base-Promoted One-Pot Synthesis of Pyridine Derivatives via Aromatic Alkyne Annulation Using Benzamides as Nitrogen Source
作者:Hina Mehmood、Muhammad Asif Iqbal、Muhammad Naeem Ashiq、Ruimao Hua
DOI:10.3390/molecules26216599
日期:——
of Cs2CO3, the first simple, efficient, and one-pot procedure for the synthesis of 3,5-diaryl pyridines via a variety of aromatic terminal alkynes with benzamides as the nitrogen source in sulfolane is described. The formation of pyridine derivatives accompanies the outcome of 1,3-diaryl propenes, which are also useful intermediates in organic synthesis. Thus, pyridine ring results from a formal [2+2+1+1]
在 Cs 2 CO 3的存在下,描述了第一个简单、有效和一锅法合成 3,5-二芳基吡啶的方法,该方法通过各种芳族末端炔烃以苯甲酰胺作为环丁砜中的氮源。吡啶衍生物的形成伴随着 1,3-二芳基丙烯的生成,这也是有机合成中有用的中间体。因此,吡啶环源自三个炔烃与苯甲酰胺的正式 [2+2+1+1] 环缩合反应,其中一个炔烃提供一个碳,而苯甲酰胺仅提供氮源。在这项工作中发现了炔烃的新转化以及苯甲酰胺的新用途。