二乙二醇双对甲苯磺酸酯 、
3,9-dimethyl-3,9-di(m-hydroxyphenyl)-2,4,8,10-tetraoxaspiro[5.5]undecane 在
caesium carbonate 作用下,
以
乙腈 为溶剂,
反应 127.0h,
以27%的产率得到14,20,38,44-tetramethyl-2,5,8,15,19,26,29,32,39,43,50,53,56,59-tetradecaoxanonacyclo[43.3.2
14,17.2
17,20.2
38,41.2
41,44.1
1,45.1
9,13.1
21,25.1
33,37]hexaconta-1(60),9,11,13(49),21,23,25(54),33,35,37(55),45,47-dodecaene