Abstract
The KSCN-catalyzed reaction of dialkyl acetylenedicarboxylates with pentane-2,4-dione in acetone, led to dialkyl 2-(1-acetyl-2-oxopropyl)-2-butenedioates in excellent yields. When these reactions were carried out in MEK (butane-2-one), dialkyl 4-oxo-2,3-dihydro-2,3-furandicarboxylates were obtained exclusively. This difference in reactivity is discussed in terms of the possibility of cationic exchange in butane-2-one.
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Yavari, I., Sirouspour, M. & Souri, S. Domino Michael–O-alkylation: one-pot synthesis of dialkyl 4-oxo-2,3-dihydro-2,3-furandicarboxylates. Mol Divers 15, 451–456 (2011). https://doi.org/10.1007/s11030-010-9265-2
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DOI: https://doi.org/10.1007/s11030-010-9265-2