icosamethylene di(3-oxobutanoate) 、
1,1,20,20-tetraphenyl-1,19-icosanediene 在
manganese(III) triacetate dihydrate 、
溶剂黄146 作用下,
反应 0.77h,
以50%的产率得到27,50-dimethyl-3,24,28,49-tetraoxa-2,25-dioxo-29,29,48,48-tetraphenyltricyclo[45.3.0.0(26,30)]pentaconta-26,50-diene