4,12-Bis-bromomethyl-2,14-di-tert-butyl-6,7,9,10-tetrahydro-16H-5,8,11-trioxa-dibenzo[a,d]cyclododecene 、
[5,19-Ditert-butyl-17-(hydroxymethyl)-9,12,15-trioxatricyclo[14.4.0.03,8]icosa-1(16),3(8),4,6,17,19-hexaen-7-yl]methanol 在
氢氧化钾 作用下,
以
1,4-二氧六环 为溶剂,
反应 4.0h,
以42%的产率得到3,11,25,33-Tetratert-butyl-7,15,18,21,29,37,40,43-octaoxaheptacyclo[33.9.1.113,23.05,44.09,14.022,27.031,36]hexatetraconta-1(44),2,4,9,11,13,22,24,26,31,33,35-dodecaene