Li W, Wu L, Yan F. Sulfonic-Acid-Functionalized Silica: An Efficient, Heterogeneous and Reusable Catalyst for the Synthesis of 8-Aryl-7,8-dihydro-[1,3]dioxolo [4,5-g]chromen-6-ones. ajc [Internet]. 2011 Nov. 4 [cited 2024 Jul. 23];24(2):725-8. Available from: https://asianpubs.org/index.php/ajchem/article/view/8603