三甲铵乙内酯(甜菜碱)的合成  

Synthesis of 1-Carboxy-N,N,N,- -Trimethylmethanaminium Hydroxide Inner Salt (Betaine)

作　　者：柳恒[1] 苏天铎[1] 唐清富[1] 张红宇[1] 

机构地区：[1]西安近代化学研究所

出　　处：《陕西化工》1999年第1期21-22,共2页Applied Chemical Industry

摘　　要：介绍了以氯乙酸钠和三甲胺为原料合成三甲铵乙内酯（甜菜碱）的方法，以室温为起始反应温度反应０．５ｈ，然后分别于５０℃～５５℃和８０℃～８５℃反应１ｈ，以强酸性阳离子交换树脂为反应液的分离提纯物质。其收率超过９７％，产品纯度达到９８．５％。该法具有操作简便、反应时间短、反应条件温和、产品纯度高等优点。The method for synthesizing betaine with sodium monochloroacetic acid and trimethylamine as raw materials was introduced.At first,they reacted for half an hour at room temperature,then at 50℃～55℃ for an hour and at 80℃～85℃ for an hour,last betaine was separated from aqueous solution by strong acid inoexchange resin.The yield was over 97% and the purity could reach 98.5%.This method had the advantages of simple procedure,short reaction time,mild reaction conditions,high product purity and etc.

关 键 词：甜菜碱 合成 饲料 三甲胺乙内酯 

分 类 号：S816.7[农业科学—饲料科学] TQ226.36[农业科学—畜牧学]