A series of 4-aryl-3,4-dihydronaphtho-[2,1-e]oxazin-2-ones and another series of 1-aryl-2,3-dihydronaphtho[1,2- e][1,3]oxazin-3-ones have been synthesised using the one pot three component coupling of α-naphthol/β-naphthol, urea and variedly substituted aldehydes and potash alum under solvent free conditions. These naphthoxazinone derivatives were further reacted with various aliphatic and aromatic amines to yield the varied condensed heterocyclic systems.