摘要
研究了单质碘催化环己酮与 1,2 丙二醇的缩醛化反应 ,考察了反应时间、醇酮摩尔比、催化剂用量、带水剂用量等因素对环己酮乙二醇缩醛收率的影响。结果表明 ,在回流条件下 ,醇酮摩尔比为 1.3,催化剂用量为5 2mg(约占反应体系总摩尔数的 0 .0 0 7% ) ,带水剂环己烷用量为 8mL ,反应 4 0min后缩醛收率可达 79.2 %。
The acetalization of cyclohexanone and 1,2 propanediol catalyzed by I 2 was studied. The effects of reaction time, reactant ratio, catalyst amount and the amount of water carrying agent on the yield of cyclohexanone 1,2 propanediol acetal was investigated. The results showed that the most suitable condition for the reaction are as follows: 1,2 propanediol/cyclohexanone molar ratio is 1.3, molar ratio of catalyst to reactant is 0.007%, cyclohexane as the water carrying agent is 8mL, reaction time is 40min. Under the conditions the yield is up to 79.2%.
出处
《合成化学》
CAS
CSCD
2003年第3期254-256,共3页
Chinese Journal of Synthetic Chemistry
关键词
1
2-丙二醇缩醛
环己酮
丙二酮
合成
单质碘
催化
cyclohexanone 1,2 propanediol acetal
cyclohexanone
propanediol
synthesis
catalysis
I 2
