4',5''-daminodibenzo-18-crown-6 、
(2S,6R)-1,7,8,9,10,10-Hexachloro-4-oxa-tricyclo[5.2.1.02,6]dec-8-ene-3,5-dione 在
PPA 作用下,
反应 4.0h,
以75%的产率得到1,19,20,21,22,42,43,44,45,45,46,46-dodecachloro-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