PUTHUKKUDY, G.; NAGARAJAN, S.; KANDASAMY, E. Brønsted Acidic 1-Ethyl-1,2,4-Trizolium Phenylsulfonate as Catalyst for Biginelli Reaction. Asian Journal of Chemistry, [S. l.], v. 30, n. 9, p. 1999–2002, 2018. DOI: 10.14233/ajchem.2018.21373. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/30_9_13. Acesso em: 7 jul. 2024.