Paper Title
Promoting ZNO Nanoparticles For Synthesis Of Chromene Derivatives Using Natural Starting Reagent

Three- component reactions of 1-(6-hydroxy-2-isopropenyl-1-benzofuran-yl)-1-ethanone, aldehydes and malononitrile or ethyl cyanoacetate in the presence of nanoparticles of ZnO as catalyst are explained as effective and green synthetic method for generating 9H- furo[2,3-f]chromenes in good yield. Keywords- Chromene; Petasites hybridus, 1-(6-hydroxy-2-isopropenyl-1-benzofuran-yl)-1-ethanone.