Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... An efficient cationic cyclization reaction has been developed to prepare substituted naphthalenes. The method has been used to prepare a phenanthrene and will be useful for the synthesis of polynuclear aromatic hydrocarbons and C-glycosyl anthraquinones.