undecacyclo<9.9.0.01,5.02,12.02,18.03,7.06,10.08,12.011,15.013,17.016.20>icosane-syn-4,syn-9-diol 在
2,2,2-trichlorobenzo-1,2,3-dioxaphospholine 作用下,
反应 0.5h,
以92%的产率得到anti-4,anti-9-dichloroundecacyclo<9.9.0.0
1,5.0
2,12.0
2,18.0
3,7.0
6,10.0
8,12.0
11,15.0
13,17.0
16.20>icosane