Nitrene. Part VI. Reaction of 6′-nitropapaverine and its analogue with triethyl phosphite
Abstract
The reaction of 6′-nitropapaverine (IX) and its analogue (X) with triethyl phosphite afforded two unexpected pairs of indolo[2,3-a][3]benzazepine derivatives, (XI) and (XIII), and (XII) and (XIV), respectively, the structures of which were assigned on the basis of spectroscopic evidence.