REZA KAZEMIZADEH, A., & RAMAZANI AND BIJAN GANJEIE, A. (2010). One-Pot Synthesis of Dialkyl 2-[(2,5-Dioxo-1-pyrrolidinyl)- oxy]-2-butenedioates from Acetylenic Esters and n-Hydroxysuccinimide. Asian Journal of Chemistry, 19(7), 5784–5786. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/13204