摘要
利用溴酸钾在冰醋酸溶剂下氧化β-甲基萘制备β-甲基萘醌。考察了催化剂种类、反应温度、反应时间、氧化剂与原料的摩尔比等因素对目标产物收率的影响,从而获得了较优的反应条件:相转移催化剂为四丁基溴化铵,反应温度80℃,反应时间5h,氧化剂与原料的摩尔比2.5∶1。在以上较优条件下,β-甲基萘转化率为81.46%,β-甲基萘醌的选择率59.07%。
β-methynaphthoquinone was obtained in acetic acid by oxidation of β-methylnaphthalene with KBrO3.The effects of catalysts,temperature,time and mole ratio of oxidant to β-methylnaphthalene on the reaction had been investigated.The optimal conditions were determined as followed: phase transfer catalyst tetrabutyl ammonium bromide,reaction temperature 80℃,reaction time 5h and mole ratio of oxidant to β-methylnaphthalene 2.5:1.The conversion of β-methylnaphthalene was 81.46% and the selectivity of β-methynaphthoquinone was 59.07% under above conditions.
出处
《化工技术与开发》
CAS
2012年第3期7-9,34,共4页
Technology & Development of Chemical Industry
关键词
Β-甲基萘
Β-甲基萘醌
催化氧化
β-methylnaphthalene
β-methynaphthoquinone
catalytic oxidation
