An efficient synthesis of naphtha[1,2-e]oxazinone and 14-substituted-14H-dibenzo[a,j]xanthene derivatives promoted by zinc oxide nanoparticle under thermal and solvent-free conditions
Keywords: آلدهید; Naphthoxazinone; Xanthene; 2-Naphthol; Aldehyde; Zinc oxide nanoparticles; Heterogeneous catalyst;