The unprecedented annulation/hydroxyfluorination of propargylic carbamates to give 4-fluoromethyl-4-hydroxy-oxazolidinones was investigated. The reaction was effectively promoted by NaHCO₃ and/or silver catalysis. The peculiar behavior of propargylic carbamates bearing a chiral steroidal moiety is described. Extensions and limitations of the procedure with respect to urea derivatives, homopropargyl compounds, internal alkynes and one-pot transformations of propargylic alcohols with isocyanates are reported.

中文翻译：

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5-丙炔基氨基甲酸酯的Exo-dig氨化/羟基氟化

研究了炔丙基氨基甲酸酯的空前的环化/羟基氟化，得到4-氟甲基-4-羟基-恶唑烷酮。NaHCO ₃和/或银催化有效地促进了反应。描述了带有手性甾体部分的炔丙基氨基甲酸酯的特殊行为。据报道该方法在脲衍生物，高炔丙基化合物，内部炔烃和炔丙醇与异氰酸酯的一锅法转化方面的扩展和局限性。