2,2,7,7,16,16,21,21-octamethyl-31,34-dioxaheptacyclo[20.6.2.28,15.11,22.18,15.09,14.023,28]tetratriaconta-9,11,13,23,25,27-hexaene-3,6,17,20-tetrone 在
对甲苯磺酸 作用下,
以
苯 为溶剂,
反应 8.0h,
以99%的产率得到2,2,7,7,16,16,21,21-Octamethyl-31,34-dioxaheptacyclo[20.6.2.28,15.13,6.117,20.09,14.023,28]tetratriaconta-1(29),3,5,8(33),9,11,13,15(32),17,19,22(30),23,25,27-tetradecaene