Abstract A series of aryl sulfonic acids were tested as catalysts for acid hydrolysis occurring at the surface poly(ethylene) terephthalate (PET) particles. Specifically, p‐toluenesulfonic monohydrate (PTSA), 2‐naphthalenesulfonic (2‐NSA), and 1,5‐naphthalenedisulfonic tetrahydrate (1,5‐NDSA) chosen to provide active groups varying hydrophobic functionality. The effect catalyst concentration re...

New Dicoumarols 2a-g efficiently synthesized employing p-TSA as a catalyst from the reaction of 4-hydroxycoumarin with aryl aldehydes in water. This method offers direct access to structurally diverse derivatives good yields (65-94%). Upon heating 3,3' -arylidenebis-4-hydroxycoumarins derivative acetic anhydride, epoxydicoumarins were formed. 1H, 13C{1H}-NMR, elemental analysis, and infrared sp...

An anthracene-based tripodal ligand was synthesized from the condensation of tren with 9-anthraldehyde, and the subsequent reduction with sodium borohydride. The neutral ligand was protonated from the reaction with p-toluenesulfonic acid to give a triply charged chemosensor that was examined for its anion binding ability toward fluoride, chloride, bromide, sulfate and nitrate by the fluorescenc...