【摘要】 以硝酸镧结晶水合物为催化剂、环己酮和乙二醇为原料合成了环己酮乙二醇缩酮,考察各种因素对反应的影响。实验确定较佳反应条件:环己酮0.3 mol,n(环己酮)∶n(乙二醇)=1∶1.5,催化剂用量0.25 g,带水剂甲苯30 mL,反应回流时间2 h,其产品收率达90.0%以上。该方法的优点是环己酮的转化率高,催化剂重复使用性能良好。更多还原

【Abstract】 Cyclohexanone ethylene ketal was synthesized from cyclohexanone and ethylene using（La（NO₃）₃·nH₂O） as the catalyst.The influences of reaction condition were investigated.The optimum conditions were obtained as follows:0.3 mol cyclohexanone,n（cyclohexanone）∶n（ethylene）=（1∶1.5）,catalyst dosage 0.25 g,toluene 30 mL as water-carrying agent,reflux time 2.0 h,with product yield of 93.0%（wt）.The catalyst features high cyclohexanone conversion and repeated usage.更多还原