LEE, E.J.; LEE, Y.G.; JUNG, D.I.; HAHN, J.T. Synthesis of Pyrrole by 1,5,3,7-Diazadiphosphocine-1,5-Dicarboxylic Acid as Acid Catalyst. Asian Journal of Chemistry, [S. l.], v. 27, n. 6, p. 2257–2259, 2015. DOI: 10.14233/ajchem.2015.18714. Disponível em: https://asianpubs.org/index.php/ajchem/article/view/27_6_70. Acesso em: 23 jul. 2024.