Highly efficient solvent-free synthesis of novel pyranyl pyridine derivatives via β-enaminones using ZnO nanoparticles
作者:Zeba N. Siddiqui、Nayeem Ahmed、Farheen Farooq、Kulsum Khan
DOI:10.1016/j.tetlet.2013.04.072
日期:2013.7
Highly efficient ZnO nanoparticle catalyzed one-pot solvent-freesynthesis of novel pyridine derivatives by three-component reaction of β-enaminones, different active methylene compounds, and ammoniumacetate via Michael addition, cyclodehydration, and elimination sequence is reported. The catalyst was recyclable up to six catalytic cycles without a significant loss in the catalytic activity. This