dimethyl 2,5-bis(bromomethyl)terephthalate 、
bis(5,5'-diethylphosphono)-6,6'-dihydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane 在
potassium carbonate 作用下,
以
乙腈 为溶剂,
以93%的产率得到dimethyl 15,75-bis(diethoxyphosphoryl)-13,13,73,73-tetramethyl-12,13,72,73-tetrahydro-11H-2,6-dioxa-1(6,1),7(1,6)-diindena-4(1,4)-benzenaheptaphane-42,45-dicarboxylate