Synthesis and behaviour of 4-[4'-chloro-3' -methyl phenyl]-1 [2H]-phthalazinone towards certain electrophiles and nucleophiles

ABSTRACT

The behaviour of 4-[4'-chloro-3'-methyl phenyl]-l[2H]-phthalazinone [I] towards carbon electrophiles, e.g., ethyl bromo acetate, formaldehyde in the presence of piperidine under Mannich reaction conditions, and carbon nucleophiles, e.g., p-tolylmagnisium bromide under Grignard reaction conditions and chlorination by using PC15/POC13, has been investigated. The reaction of the chlorophthalazine derivative [6] with nitrogen nucleophiles mainly piperidine, pyrrolidine, cyclohexylamine, benzylamine and hydrazine hydrate, has been described. The behaviour of hydrazinophthalazine derivative towards carbon electrophile, e.g. aromatic aldehydes, ethyl acetoacetate and acetylacetone also has been discussed