Regioselective synthesis of two types of highly substituted 2-pyridones through similar multicomponent reactions
作者:Sudipta Pathak、Ashis Kundu、Animesh Pramanik
DOI:10.1016/j.tetlet.2012.04.010
日期:2012.6
monoamines in ethanol produces highlysubstituted 2-amino-6-pyridones such as 2-amino-1-(alkyl)-5-cyano-6-oxo-4-(aryl)-1,6-dihydropyridine-3-ethylcarboxylates in one-pot. On the other hand the refluxing of a mixture of ethylcyanoacetate, aromatic aldehydes, and primary diamines (1,2-ethylenediamine/1,3-propylenediamine) in ethanol furnishes symmetrical zwitterionic 2-pyridones such as 1-(2-amino-ethyl/