摘要：

2-cyclohexylidene cyclohexanone Ⅰ and 2-cyclohexenyl cyclohexanone Ⅱ were prepared by the condensation of cyclohexanone under the catalysis of Fe_2(SO_4)_3·xH_2O in the presence of solvent such as cyclohexane, benzene, and toluene or without solvent in 49～52%(Ⅰ+Ⅱ) yields. The mixture of resultants Ⅰ and Ⅱ was purifield by TLC(cyclohexane:ethylacetate=8:1)to yield Ⅰ and Ⅱ(Ⅰ:Ⅱ=1:4).Glycol or 1,2-propanediol attaches to the carbonyl group of aldehydes or ketones in the presence of Fe_2(SO_4)_3·xH_2O to yield acetals or ketals Ⅳ_(a-k) in 44～84% yields.

展开