Hydrated ferric sulfate catalyzed synthesis of 5,6-unsubstituted 1,4-dihydropyridines using three-component reaction
作者:Kobirul Islam、Deb K. Das、Abu T. Khan
DOI:10.1016/j.tetlet.2014.08.067
日期:2014.10
A wide variety of 5,6-unsubstituted 1,4-dihydropyridines derivatives (4a-q) were synthesized through a one-pot three-component reaction from alpha,beta-unsaturated aldehydes, amines, and 1,3-diketones at room temperature using hydrated ferric sulfate as a Lewis acid catalyst. The key features of the present protocol are mild and simple reaction procedure, good to excellent yields, and use of inexpensive, recyclable, and environmentally benign catalyst. (C) 2014 Elsevier Ltd. All rights reserved.