Formation of polycyclic compounds in the photoreactions of 9-(ω-anilinoalkyl)phenanthrenes
Abstract
Photoirradiation of the title compounds, Ar(CH2)nNHPh (Ar = 9-phenanthryl, n= 6–10, and 12), in benzene under anaerobic conditions gave polycyclic compounds with the 2-azabicyclo[3.3.1]nonane skeleton. It is proposed that the photoreaction proceeds by electron transfer via an exciplex to give polycyclic compounds as a result of the addition of the NH group to the phenanthrene ring.