Al-Hamdany, R., Fataftah, Z., & Abu-Durrah, B. (2010). Synthesis of 3-(Chlorosulfonylaryl) Phthalides and Their Reactions with Amino Pyridines . Asian Journal of Chemistry, 10(4), 928–932. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/23752