We have further extended the scope of our procedure to synthesize different higher analogues of phenanthridines. With the aforesaid optimal set of reaction conditions we have synthesized benzo[k]phenanthridines 3.41a-c and benzo[i]phenanthridine 3.42 from the corresponding bromonaphthaldehyde in good yields (Table .3). Here also different functionalities have been well tolerated. A mixture of 1 mmol of ortho-bromovinylaldehyde and 3 mmol of DDQ were taken in dry benzene in a 25 mL two necked round bottomed flask and refluxed for overnight. Completion of the reaction was confirmed TCL. After completion of the reaction the mixture was cool to room temperature and benzene was evaporated under reduced pressure. The crude product was purified the usual column chromatography using silica gel and mixture of petroleum ether and ethyl acetate as eluents.