Tetraethyl 8,21,27,28,29,30-hexazapentacyclo[21.3.1.12,6.110,14.115,19]triaconta-1(26),2,4,6(30),10(29),11,13,15,17,19(28),23(27),24-dodecaene-4,12,17,25-tetracarboxylate 、
diethyl 2,6-dibromomethyl-3,5-pyridinedicarboxylate 在
lithium tert-butoxide 作用下,
以
甲苯 、
叔丁醇 为溶剂,
反应 3.0h,
以40%的产率得到Tetratert-butyl 8,21,27,28,29,30-hexazapentacyclo[21.3.1.12,6.110,14.115,19]triaconta-1(26),2,4,6(30),10(29),11,13,15,17,19(28),23(27),24-dodecaene-4,12,17,25-tetracarboxylate