2-diazo-3-(2,2-dimethyl-4-phenyl-oxazolidin-3-yl)-3-oxo-propionic acid methyl ester 在
dirhodium(II) tetrakis(perfluorobutyrate) 作用下,
以
苯 为溶剂,
反应 5.0h,
以66%的产率得到Methyl 5,5-dimethyl-7-oxo-4-oxa-6-azatricyclo[6.5.0.02,6]trideca-1(13),9,11-triene-8-carboxylate