Photocyclization of .OMEGA.-anilinoalkylphthalimides: A photochemical. macrocyclic synthesis.

Abstract

Upon irradiation, a homologous series of N-[ω-(methylanilino) alkyl] phthalimides 5, having a nonconjugated bichromopholic system, undergoes regioselective remote photooyclization to give medium- to large-sized (up to twenty-two-membered) diazacyclols 6.