SEARCH Articles Figures Tables Benzo pyrylium salts syntheses, reactions Benzo pyrylium salts: syntheses Pyrylium Pyrylium perchlorate, ring synthesis Pyrylium perchlorate, synthesis from Pyrylium salts syntheses Pyrylium salts syntheses, reactions, and physical Pyrylium salts syntheses, reactions, and physical properties Pyryliums ring synthesis Synthesis of Pyryliums