1,1,9,9-tetraphenyl-1,8-nonadiene 、
propane-1,3-diyl bis(3-oxobutanoate) 在
manganese(III) triacetate dihydrate 、
溶剂黄146 作用下,
反应 0.67h,
以57%的产率得到10,22-dimethyl-3,7,11,21-tetraoxa-2,8-dioxo-12,12,20,20-tetraphenyltricyclo[17.3.0.0(9,13)]icosa-9,22-diene