LI, Weilin; WU, Liqiang; YAN, Fulin. 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. Asian Journal of Chemistry, [S. l.], v. 24, n. 2, p. 725–728, 2011. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/8603. Acesso em: 23 jul. 2024.