Photochemical ring expansion of diazidonaphthalenes: formation of the first examples of azepinoazepines
Abstract
Photolysis of 1,5-, 1,6-, 1,8-, and 2,7-diazidonaphthalenes (1) results in ring expansion of both benzene rings to give the corresponding novel azepinoazepines (3)via the azidobenzazepines (2).