WU, Liqiang; WANG, Xiao; YANG, Limin; YAN, Fulin. Silica Supported Perchloric acid (HClO4-SiO2) Catalyzed Synthesis of 8,10-Dimethyl- 8,12-dihydro-12-aryl-9H-naphtho- [1’,2’:5,6]pyrano[2,3-d]pyrimidine-9,11(10H)-diones Under Solvent-Free Conditions. Asian Journal of Chemistry, [S. l.], v. 22, n. 8, p. 6178–6184, 2010. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/11798. Acesso em: 23 nov. 2024.