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在SmI_3作用下和中性室温的条件下,环戊酮能与醛缩合,得到几乎定量产率的α,α＇-二亚苄基环戊酮;但对环已酮,产率仅在20％左右。
Under the condition of SmI_3 and neutral room temperature, cyclopentanone can be condensed with aldehyde to obtain almost quantitative yield of α, α’-dibenzylidenecyclopentanone; but for cyclohexanone, the yield is only at About 20%.