1-甲基吲哚 、
tert-butyl 2-diazo-3,5-dioxo-4,4-dimethylhexanoate 在
dirhodium(II) tetrakis[N-tetrachlorophthaloyl-(S)-tert-leucinate] bis(ethylacetate) 作用下,
以
三氟甲苯 为溶剂,
反应 1.0h,
生成 exo-1-tert-butoxycarbonyl-1,4-epoxy-3,3,4,9-tetramethyl-1,3,4,4a,9,9a-hexahydro-2H-carbazole-2-one 、
exo-1-tert-butoxycarbonyl-1,4-epoxy-3,3,4,9-tetramethyl-1,3,4,4a,9,9a-hexahydro-2H-carbazole-2-one