ethyl N-[4-(1-hydroxy-1-phenylprop-2-ynyl)phenyl]carbamate 、
2,3-Dimethoxy-7,8-dihydrobenzo[c]phenanthren-6-ol 在
camphor-10-sulfonic acid 作用下,
以
甲苯 为溶剂,
反应 2.0h,
生成 ethyl N-[4-(10,11-dimethoxy-4-phenyl-3-oxapentacyclo[12.8.0.02,7.08,13.015,20]docosa-1(14),2(7),5,8,10,12,15,17,19-nonaen-4-yl)phenyl]carbamate