Abstract 2-Naphthoxyacetic acid hydrazide (1) was condensed with indole-2, 3-dione in ethanol to yield 3-(2'-naphthoxyacetylhydrazono) indolin-2-one (2) which on aminomethylation with formaldehyde and different amines furnished 1-(substituted aminomethyl)-3-(2'-naphthoxyacetyl hydrazono) indolin-2-ones. The structures of the newly synthesized compounds have been established by analytical and spectral methods. ...