The synthesis of 6,9-difluorobenzo[g]quinoline-5,10-dione. Displacements of the fluorides by diamines which lead to 6,9-bis[(aminoalkyl)amino]benzo[g]quinoline-5,10-diones

The synthesis of 6,9-difluorobenzo[g]quinoline-5,10-dione (3b) is described. Facile ipso substitutions of the fluorides form (3b) by diamines readily yield the corresponding 6,9-bis[(aminoalkyl)amino]- benzo[g]quinoline-5,10-diones (2). The analogue (2d) has been synthesized by side arm modifications of dione (8a)