ethyl 5-(pent-1-yn-1-yl)-1H-indole-1-carboxylate 、 3-hydroxy-2-(4-methylphenyl)cyclohex-2-en-1-one 在
[ruthenium(II)(η
6-1-methyl-4-isopropyl-benzene)(chloride)(μ-chloride)]
2 、 copper diacetate 、
potassium carbonate 作用下,
以
1,4-二氧六环 为溶剂,
反应 4.0h,
以66%的产率得到ethyl 5-(5'-methyl-2,6-dioxo-3'-propylspiro[cyclohexane-1,1'-indene]-2'-yl)-1H-indole-1-carboxylate