List of Articles Solvent-free Open Access Article Abstract Page Full-Text 1 - Al2 (SO4)3.18H2O as an Efficient and Environmentally Benign Natural Catalyst for Facile and Solvent-free Synthesis of Xanthene Derivatives Farzaneh Mohamadpour Open Access Article Abstract Page Full-Text 2 - SYNTHESIS OF 1,8-DIOXO-OCTAHYDROXANTHENES WITH THIAMINE CHLORIDE IN ECO-FRINDLY AND SOLVENT FREE CONDITION Bahram Pourhasan Mohammad Mahmudi Hashemi Ali Ezabadi Open Access Article Abstract Page Full-Text 3 - TiO2/nanoclinoptilolite, a recyclable and high efficient heterogeneous nanocatalyst, for the synthesis of 2-amino-4H-chromene derivatives Farzad Javadi Reza Tayebee Open Access Article Abstract Page Full-Text 4 - A novel silicotungstic acid-containing ionic liquid immobilized on graphene oxide nanosheets: Preparation, characterization, and first catalytic application in the synthesis of 1,8‐dioxo‐octahydroxanthenes Simin Bozorgnia Abolghasem Davoodnia Mehdi Pordel S. Ali Beyramabadi Open Access Article Abstract Page Full-Text 5 - Dihydropyrimidinonoes Synthesis via One Pot Solvent-free Cu catalyzed Reaction mohammad kazem mohammadi