The formation of medium-sized rings by the intramolecular cyclization of arylnitrenium ions

Abstract The synthesis of an aminodibenzo[ a , c ]octadiene and an aminodibenzo[ a , c ]octatriene, guided by molecular mechanics calculations, was effected by the intramolecular cyclization of the corresponding open chain nitrenium ions. Also reported is the predicted failure to synthesize another aminodibenzo[ a , c ]octadiene using this method.