ethyl 2-diazo-3-hydroxy-3-(2-naphthyl)propanoate 在
dirhodium tetraacetate 、 zinc trifluoromethanesulfonate 作用下,
以
二氯甲烷 为溶剂,
生成 1-ethyl 3-methyl (rel-1S,4R,5S,6S)-5-methyl-6-(naphthalen-2-yl)-4-phenyl-7-oxa-2-azabicyclo[2.2.1]hept-2-ene-1,3-dicarboxylate