| abstract |
A process for the preparation of the title compounds comprises reacting N-hydroxy-1,8-naphthalimide with an esterifying agent of the formula: X-Y-R (I> wherein: X is halogen, and either Y is =CO and R is halogen or lower alkoxy, or Y is =SO2 and R is lower alkyl, in an aqueous medium at a pH from 7 to 9. Products of this reaction: <IMAGE> wherein: R<1> lower alkoxy, halogen or N-oxy- 1,8-naphthalimide are claimed per se. |