、
丙酮 在
三氟化硼乙醚 作用下,
反应 0.83h,
以7%的产率得到1,32,37,37,46,46-Hexamethyl-6,27-dioxa-51,52,53,54-tetrazadecacyclo[30.9.9.133,36.138,41.142,45.147,50.07,16.010,15.017,26.018,23]tetrapentaconta-7(16),8,10,12,14,17(26),18,20,22,24,33,35,38,40,42,44,47,49-octadecaene