SYNTHESIS, CHARACTERIZATION, AND BIOLOGICAL ACTIVITY OF A NEW CLASS OF DIALKYLPHOSPHORYLHYDRAZONE DERIVATIVES OF ISATIN

Sixteen dialkylphosphorylhydrazones were synthesized by condensation of phosphorylhydrazines with substituted isatins.Products were characterized by FTIR, 1 H-NMR, 13 C-NMR, and 31 P-NMR.Fungicidal activities of these compounds against Rhizoctonia solani and Fusarium oxysporum were also evaluated.Some compounds inhibited the growth of Rhizoctonia solani and Fusarium oxysporum by 43% and 51%, respectively.These compounds exhibited no effects on germination of lettuce seeds (Lactuca sativa L).