Heterogeneous Catalysis in Carbonyl Regeneration from 1,3-Dithiolanes and 1,3-Dithianes by Zirconium Sulfophenyl Phosphonate - Curini, Massimo; Marcotullio, Maria Carla; Pisani, Emanuela; Rosati, Ornelio; Constantino, Umberto (Synlett, 1997)