摘要
在硫酸铁水合物催化下环已酮发生缩水反应,得产物环已叉基环已酮(Ⅰ)、环已烯基环已酮(Ⅱ)及三分子缩水产物(Ⅲ);乙二醇、丙二醇与不同的醛(酮)反应得到了相应的缩醛(酮)产物(Ⅳ_(a～k)),一般产率为44～84％。
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.
出处
《吉林大学自然科学学报》
CSCD
1989年第2期113-116,共4页
Acta Scientiarum Naturalium Universitatis Jilinensis
关键词
环己酮
缩合
缩醛
硫酸铁
催化
condensation of cyclohexanone, acetals, ketals.
