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一种糠醛型季铵盐的合成

Synthesis of Furan-Containing Ammonium Salt
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摘要 采用糠醛、正丁胺及卤代烷为原料合成单长链糠醛型季铵盐N-甲基-N-丁基-N-十二烷基-2-呋喃-亚甲基碘化铵,考察了反应时间、物料配比和温度等因素对反应的影响。结果表明N-丁基-2-呋喃-亚胺、N-丁基-N-2-呋喃-亚甲基胺以及N-丁基-N-十二烷基-N-2-呋喃-亚甲基胺的最佳合成条件分别为:反应时间4 h,n(糠醛)∶n(正丁胺)=1∶2,反应温度60℃;反应时间4 h,n(亚胺)∶n(硼氢化钠)=1∶2.5,温度0~5℃;反应时间16 h,n(N-丁基-N-2-呋喃-亚甲基胺)∶n(溴代十二烷)=1∶1.1,反应温度为80℃。质谱证实了产品结构,经两相滴定法测得活性物含量为95.1%;产品的ccmc为0.000 2 mol/L,γcmc为33.93 mN/m,表面活性较好。 Long chain furan-containing ammonium salt N-methyl-N-Butyl-N-dodecyl-2-furfuryl ammonium iodide was synthe-sized from furfural, butylamine and alkyl halides. The reaction conditions such as reaction time, temperature, and reactant ratio were investigated. Experimental results showed that the optimum reaction conditions of N-Bntyl-2-furan imine, N-Butyl-N-2-furan methylene amine, N-Butyl-N-dodecyl-N-2-furan methylene amine are separately as follows: n (furfural) : n ( butyl-amine) = 1:2.5, reaction temperature 60 ℃, reaction time 4 h; n (imine) :n (NaBH4) = 1:2.5, reaction temperature 0 - 5 ℃, reaction time 4 h ; n ( N-Butyl-N-2-furan methylene amine) :n ( C12 H25 Br) = 1 : 1.1, reaction temperature 80 ℃, reaction time 16 h. The structure of product was confirmed by mass spectrum. The active matter content was 95.1%, which was determined with two phase titration. The product showed good surface activity with 0.000 2 mol/L of ccmc and 33.93 mN/m of γcom.
出处 《江南大学学报(自然科学版)》 CAS 2012年第3期320-325,共6页 Joural of Jiangnan University (Natural Science Edition) 
基金 国家自然科学基金项目(20901032) 中央高校基本科研业务费专项项目(JUSRP11005)
关键词 季铵盐 糠醛 两相滴定 表面张力 ammonium salt, furfural, two phase titration, surface tension
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