、 2,7-Di-tert-butyl-4,5-diisocyanato-9,9-dimethyl-9H-xanthene 在
四丁基氯化铵 作用下,
以
乙腈 为溶剂,
反应 13.0h,
以25%的产率得到3,59-Ditert-butyl-65,65-dimethyl-15,31,47,63-tetraoxa-6,8,22,24,38,40,54,56-octazadecacyclo[59.3.1.05,64.09,14.016,21.025,30.032,37.041,46.048,53.057,62]pentahexaconta-1(64),2,4,7,9,11,13,16,18,20,23,25,27,29,32,34,36,38,41,43,45,48,50,52,54,57,59,61-octacosaene-7,23,39,55-tetrol