广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2014年
13期
68-69
,共2页
曾振芳%何东雨%覃玉勤%邓翠娇
曾振芳%何東雨%覃玉勤%鄧翠嬌
증진방%하동우%담옥근%산취교
苯氧乙酸%氯乙酸%合成%正交实验
苯氧乙痠%氯乙痠%閤成%正交實驗
분양을산%록을산%합성%정교실험
phenoxyacetic acid%chloroacetic acid%synthesis%orthogonal experiments
利用氯乙酸与氢氧化钠反应生成氯乙酸钠,然后在碱性条件下与苯酚反应生成苯氧乙酸钠,最后进行酸化得到苯氧乙酸,并通过正交实验筛选出最佳的合成工艺条件为:苯酚砄氯乙酸( mol)为1:1.2, pH=12,回流时间为0.5 h,酸化时间为2 h时,产品产率为93%左右。该方法具有反应时间短,易控制,操作简便及后处理简单等优点。
利用氯乙痠與氫氧化鈉反應生成氯乙痠鈉,然後在堿性條件下與苯酚反應生成苯氧乙痠鈉,最後進行痠化得到苯氧乙痠,併通過正交實驗篩選齣最佳的閤成工藝條件為:苯酚砄氯乙痠( mol)為1:1.2, pH=12,迴流時間為0.5 h,痠化時間為2 h時,產品產率為93%左右。該方法具有反應時間短,易控製,操作簡便及後處理簡單等優點。
이용록을산여경양화납반응생성록을산납,연후재감성조건하여분분반응생성분양을산납,최후진행산화득도분양을산,병통과정교실험사선출최가적합성공예조건위:분분결록을산( mol)위1:1.2, pH=12,회류시간위0.5 h,산화시간위2 h시,산품산솔위93%좌우。해방법구유반응시간단,역공제,조작간편급후처리간단등우점。
Chloroacetic acid reacted with sodium hydroxide to produce sodium chloroacetate , the sodium chloroacetate reacted with phenol to generate oxygen benzene acetic acid sodium in alkaline condition , and the phenoxyacetic acid was got after acidification.The optimum conditions selected by orthogonal experiments were that the ratio of phenol and chloroacetic acid was 1:1.2(mol), pH=12, at 97℃ (reflux) for 0.5 h, the acidification time was 2 h, and the yield reached about this method had the characteristics of short reaction time safety , easy control and simple operation.