4-Chloro-2-methylquinolines 1a-d on reaction with p-toluidine afforded 2,4’-dimethyl-4-(N-phenylamino) quinolines 2a-d which on reaction with aliphatic and aromatic carboxylic acids yielded the respective 7-substituted dibenzonaphthyridines 3a-d and 4a- d whereas a heterocyclic acid afforded 5a-c and 6a-c.