Photooxidation of pyrrole adducts 7− 10 has been investigated in order to establish a general reaction pattern and mechanism for the formation of the resulting oxygenated products. The reactions were performed in several solvents utilizing both type I and type II sensitizers. In most cases, photooxidations gave complex mixture of products. Among these products, 5, 5-or 6, 5-bicyclic lactams (11, 15, and 19), maleimide 12 unsaturated γ- ...
