邻四氯苯醌 、
4-(Dimethylphosphino)-1,3,5,7-tetramethyl-1,3,5,7-tetraaza-4λ5-phosphaspiro<3.3>heptan-2,6-dion 以
Petroleum ether 为溶剂,
以35%的产率得到2,2-Dimethyl-2-<1-(2,6-dioxo-1,3,5,7-tetramethyl-1,3,5,7,4λ
5-tetraazaphosphaspiro<3.3>heptanyl)-tetrachlorphenylen-1,2-dioxy>-4,5-(tetrachlorbenzo)-1,3,2λ
5-dioxaphospholen