Iminyls. Part 2. Intramolecular aromatic substitution by iminyls. A new route to phenanthridines and quinolines
Abstract
Biphenyl-2-yl- and triarylvinyl-iminyls, generated by oxidation of the corresponding imino-oxyacetic acids with persulphate and by thermolysis of the t-butyl peresters of these acids, readily cyclise in high yield to phenanthridines and quinolines, respectively.