在ＳｍＩ３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ａ，ａ’－二亚苄基环戊酮；但对环己酮，产率仅在２０％左右。......

A versatile and environmentally friendly method for α,α’-bis(substituted ben-zylidene) cycloalkanones has been develo......