布罗波尔的合成与精制  

Synthesis and Purification of Bronopol

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作  者:曲洋[1] 刘福胜[1] 刘仕伟[1] 于世涛[1] 

机构地区:[1]青岛科技大学,青岛266042

出  处:《精细石油化工进展》2010年第5期9-12,共4页Advances in Fine Petrochemicals

摘  要:采用先羟甲基化后溴化反应的方法合成布罗波尔,通过正交试验考察了原料配比、反应时间、反应温度对反应结果的影响,得到的较佳反应条件如下:n(硝基甲烷)∶n(氢氧化钠)∶n(甲醛)∶n(溴素)=1∶1∶2∶1,羟甲基化反应温度20℃,反应时间1.5h,溴化反应温度15℃。考察了布罗波尔在单一及复配溶剂中的溶解度和重结晶试验,确定的较佳复配溶剂比m(乙酸乙酯)∶m(氯仿)=1∶1。在较佳反应条件下,反应过程收率可达90%,重结晶单程收率可达83%,得到的产品纯度在99%以上。Bronopol was synthesized by hydroxymethylation and bromination. The effects of n(nitromethane) : n(NaOH) :n(formaldehyde) :n( bromine), reaction temperature and reaction time on reaction result were ex- amined by orthogonal experiments. The optimum reaction conditions were ane) : n (NaOH) : n (formaldehyde) : n(bromine) = 1 : 1:2 : 1, hydroxymethy methylation time 1.5 hours, bromination temperature 15 ~C. The solubility obtained as follows : n ( nitrometh- lation temperature 20 ~C, hydroxy- and recrystallization of bronopol in different solvents were studied. The suitable solvent was the mixture of ethyl acetate and chloroform with the mass ratio of 1:1. Under the above conditions, the yield of product was up to 90%. Recrystallization yield and purity of product were 83% and 99% respectively.

关 键 词:布罗波尔 合成 精制 2-溴-2-硝基-1  3-丙二醇 

分 类 号:TQ223.162[化学工程—有机化工]

 

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