Synthesis and reactions of some 6-(2-hydroxy-1-naphthyl)-1,2,4-triazines

4,5-Benzocoumaran-2,3-dione condenses with semicarbazide and thiosemicarbazide at the 3-position and the products obtained were converted to the corresponding 6-(2-hydroxy-1-naphthyl)-1,2,4-triazines. Reactions of these triazines with some reagents are described.