3:3,8:8,13:13-tris(1,1,2,2-tetramethylethano)pentadeca-1,4,6,9,11,14-hexayne 在
吡啶 、 copper diacetate 、
copper(l) chloride 作用下,
反应 96.0h,
以49%的产率得到1,1,2,2,9,9,10,10,16,16,17,17,23,23,24,24,30,30,31,31,37,37,38,38-tetracosamethylhexaspiro[2.4.2.4.2.4.2.4.2.4.2.4]dotetraconta-4,6,11,13,18,20,25,27,32,34,39,41-dodecayne