4,9-ditert-butyl-2,6,7,11-tetraphenyl-15-oxapentacyclo[10.2.1.02,11.03,10.05,8]pentadeca-3,5(8),6,9,13-pentaene 、
四氰基乙烯 以18%的产率得到4,11-ditert-butyl-2,6,9,13-tetraphenyl-17-oxahexacyclo[12.2.1.02,13.03,12.05,10.06,9]heptadeca-3(12),4,10,15-tetraene-7,7,8,8-tetracarbonitrile