JIN, TONG-SHOU; ZHAO, RUI-QIAO; LI, TONG-SHUANG. An Efficient and Convenient Procedure for Preparation of 5-Arylidene Barbituric Acid Catalyzed by ZrO2/SO42- Solid Superacid with Grinding. Asian Journal of Chemistry, [S. l.], v. 19, n. 5, p. 3815–3820, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/13284. Acesso em: 26 aug. 2024.