以乙醇为溶剂,在70℃下用强酸性阳离子交换树脂Amberlyst15催化芳香醛与环己酮缩二乙醇或环戊酮缩二乙醇反应2～6h后,以产率80%～92%得到α,α′-双亚苄基环烷酮类化合物。产物结构经熔点,IR和1HNMR确证。产物后处理简单,没有醛或缩酮的自缩合产物生成,是一种环境友好的绿色合成方法。 Using ethanol as the solvent, the aldehyde was reacted with cyclohexanone diethyl acetal or cyclopentanone diethyl acetal for 2 ~ 6 h at 70 ℃ with a strongly acidic cation exchange resin Amberlyst 15 to obtain α, α’-dibenzylidenecycloalkanone. The product structure was confirmed by melting point, IR and 1H NMR. Product post-processing is simple, no aldehyde or ketal self-condensation products generated, is an environmentally friendly green synthesis.