N-Alkylprop-2-ynylamines readily react with carbon dioxide in the presence of catalytic amounts of strong organic bases and undergo intramolecular cyclization to 5-methylene-1.3-oxazolidin-2-ones in good yields.
M. Costa, G. P. Chiusoli and M. Rizzardi, Chem. Commun., 1996, 1699 DOI: 10.1039/CC9960001699
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