Tetrahedron Letters p. 4887 - 4890 (1990)
Update date:2022-08-03
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Kimura
O-Propargyl carbamates 1 undergo an intramolecular nucleophilic addition to acetylenic bond at the nitrogen atom to furnish 4-methylene-2-oxazolidinones 2 in good yields in the presence (Cu+ for R1 = p-toluenesulfonyl, Ag+
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