4',5''-daminodibenzo-18-crown-6 、
cis-5-norbornene-exo-2,3-dicarboxylic anhydride 在
PPA 作用下,
反应 2.0h,
以73%的产率得到7,10,13,29,32,35-hexaoxa-25,39-diazanonacyclo[40.2.1.119,22.02,41.04,38.06,36.014,28.016,26.018,23]hexatetraconta-4,6(36),14(28),15,20,26,37,43-octaene-3,17,24,40-tetrone