OICC Press Journal of Nanostructure in Chemistry 2193-8865 4 1 (March 2014) 2014 02 25 Sulfonic acid-functionalized ordered nanoporous Na+-montmorillonite (SANM) as an efficient and recyclable catalyst for the tetrahydropyranylation and detetrahydropyranylation of alcohols and phenols 10.1007/s40097-014-0085-2 EN Farhad Shirini Department of Chemistry, College of Science, The University of Guilan, Rasht, 41335, IR Masoumeh Abedini Department of Chemistry, College of Science, The University of Guilan, Rasht, 41335, IR Ahmad Nasiri Abkenar Department of Chemistry, School of Sciences, Payame Noor University (PNU), Tehran, 19395-3697, IR Bita Baghernejad Department of Chemistry, School of Sciences, Payame Noor University (PNU), Tehran, 19395-3697, IR Journal Article 2014 02 25 Abstract Sulfonic acid-functionalized ordered nanoporous Na + -montmorillonite, as a newly reported solid acid nanocatalyst, was efficiently used for the tetrahydropyranylation and detetrahydropyranylation of alcohols and phenols. All reactions were performed at room temperature in high to excellent yields. Ease of preparation and handling of the catalyst, heterogeneous reaction conditions, easy work-up of the products, high reaction rates and reusability of the catalyst are the main advantages of this method.