methyl 4-[(1S,2S)-2-[tert-butyl(dimethyl)silyl]oxy-5-methylidenecyclopentyl]-2-diazo-3-oxobutanoate 在
dirhodium tetraacetate 作用下,
以
苯 为溶剂,
反应 1.17h,
以70%的产率得到methyl (1R,3S,6S,7S)-7-[tert-butyl(dimethyl)silyl]oxy-4-oxotricyclo[4.3.0.01,3]nonane-3-carboxylate