6-(triphenylphosphonio-3'-cyclopentadienyl)-2,3,5-tribromocylohexa-2,5-diene-1,4-dione 、
三氟乙酸 以
二氯甲烷 为溶剂,
生成 Trifluoro-acetatetriphenyl-[4-(2,4,5-tribromo-3,6-dioxo-cyclohexa-1,4-dienyl)-cyclopenta-1,4-dienyl]-phosphonium; 、 Trifluoro-acetatetriphenyl-[4-(2,4,5-tribromo-3,6-dioxo-cyclohexa-1,4-dienyl)-cyclopenta-1,3-dienyl]-phosphonium; 、 Trifluoro-acetatetriphenyl-[3-(2,4,5-tribromo-3,6-dioxo-cyclohexa-1,4-dienyl)-cyclopenta-1,3-dienyl]-phosphonium;