20,24-diamino-2,3,11,12-dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene 、
cis-1,2,3,6-tetrahydrophthalic anhydride 在
PPA 作用下,
反应 2.0h,
以80%的产率得到2,5,8,24,27,30-hexaoxa-20,42-diazaheptacyclo[29.13.0.09,23.011,21.013,18.033,43.035,40]tetratetraconta-1(31),9(23),10,15,21,32,37,43-octaene-12,19,34,41-tetrone