(1)
REZA KAZEMIZADEH, A.; RAMAZANI AND BIJAN GANJEIE, A. One-Pot Synthesis of Dialkyl 2-[(2,5-Dioxo-1-Pyrrolidinyl)- Oxy]-2-Butenedioates from Acetylenic Esters and N-Hydroxysuccinimide. ajc 2010, 19, 5784-5786.