67665-46-7
2,2'-dinitro-9,9'-spirobi[fluorene]
→
~73%
67665-45-6
9,9’-螺二[9H-芴]-2,2’-二胺
67665-47-8
2,2'-二溴-9,9'-螺二芴
~45%
790674-48-5
2,2’-二碘-9,9’-螺二芴