异硫代氰基4-硝基苯酯 、
o-methoxycarbonyl-α-diazoacetophenone 在
copper acetylacetonate 作用下,
以
苯 为溶剂,
以5.6%的产率得到1,1'-Dimethoxy-11-(4-nitrophenyl)spiro[12-oxa-11-azatricyclo[7.2.1.02,7]dodeca-2,4,6-triene-10,10'-12-oxa-11-thiatricyclo[7.2.1.02,7]dodeca-2,4,6-triene]-8,8'-dione