trimethoxonium tetrafluoroborate 、
Dispirohexaoxaheptacyclo<33.3.1.13,7.14,38.116,20.119,23.122,26>tetratetraconta-1(39),3,5,7(40),16,18,20(42),22,24,26(44),35,37-dodecaen-10,12,29,31-tetrain-43',3''-phthalid> 以
二氯甲烷 为溶剂,
反应 5.0h,
以97%的产率得到41,43-Bis<2-(methoxycarbonyl)phenyl>-2,8,15,21,27,34-hexaoxaheptacyclo<33.3.1.1
3,7.1
4,38.1
16,20.1
19,23.1
22,26>tetratetraconta-1(39),3,5,7(40),16,18,20(42),22,24,26(44),35,37-dodecaen-10,12,29,31-tetrain-41,43-diylium-bis(tetrafluoroborat)