1-PHENYLNAPHTHALENES .7. REACTION OF HYDRAZINE HYDRATE WITH SUBSTITUTED 1-PHENYLNAPHTHALENE-2,3-DICARBOXYLIC ANHYDRIDE

1-Phenylnaphthalene-2,3-dicarboxylic anhydride reacts with hydrazine in n-butanol to give a mixture of N-amino-1-phenylnaphthalene-2,3-dicarboximide and 5-phenyl-1,2,3,4-tetrahydrobenzo[g]phthalazine-1,4-dione. The substituted anhydrides give either the corresponding N-amino-imide or the phthalazine-1,4-dione. The reaction of these anhydrides with hydrazine in glacial acetic acid gives the corresponding N-acetamido-imides. Structural determination is based mainly upon spectroscopic evidence.