A synthesis of novel 4-substituted-3-cyano-2-aminopyridines using enaminonitriles and various primary amines was established under microwave irradiation and solvent-free conditions. Structures of the new compounds were characterized by IR, MS, 1H and 13C NMR data and the structure of 2-aminopyridine of the products was confirmed by X-ray analysis.
在微波辐射和无溶剂条件下,使用烯胺腈和各种伯胺合成了新型的4-取代的-3-氰基-2-氨基吡啶。通过IR,MS,1 H和13 C NMR数据表征了新化合物的结构,并且通过X射线分析证实了产物的2-氨基吡啶的结构。
Synthesis of multi-substituted pyridines from ylidenemalononitriles and their emission properties
作者:Juliana M. de Souza、Irini Abdiaj、Jiaqi Chen、Kenneth Hanson、Kleber T. de Oliveira、D. Tyler McQuade
DOI:10.1039/d0ob02591g
日期:——
Numerous methodologies to obtain pyridines from ylidenemalononitriles are described in the literature. Nevertheless, they are limited to the use of microwave or conventional heat and few lead to 2,3,4 or 2,3,4,5-substituted pyridines as multi-proposal molecular scaffolds or even universal pyridines. Herein, we present a mild and facile solvent-free methodology to obtain a scope of multi-substituted