“…Compound 4 underwent a Beckmann rearrangement with AlCl 3 with ring enlargement and the formation of the lactam 5. N An attempt at the dehydrogenation of compound 5 by the action of Pd/C led to 2-hydroxy-1-azapyrene (6). The amide 5 was then converted into the thioamide 7; quaternization of the latter followed by reduction of the methylthio derivative gave the amine 8.…”