2,2-二羟甲基庚醛的合成工艺研究  

Synthesis of 2,2-dimethylolheptaldehyde

作　　者：张漪[1] 崔建兰[1] 郭文龙[1] 

机构地区：[1]中北大学化学工程系,山西太原030051

出　　处：《浙江化工》2007年第1期1-3,共3页Zhejiang Chemical Industry

摘　　要：以甲醛和新蒸庚醛为原料,经羟醛缩合反应合成了2,2-二羟甲基庚醛(DMH)。羟醛缩合反应的最佳工艺条件为:反应温度为35℃,n(甲醛):n(庚醛):n(NaOH)=4:1:1.3,缩合剂为w(NaOH)=10%溶液,反应时间为5h。加甲酸中和碱,经精制DMH的收率达到67.8%。2,2-二羟甲基庚醛的结构用红外光谱(IR)表征。2,2-dimethylolheptaldehyde was prepared from formaldehyde and n-heptaldehyde through condensation reaction.The optimum conditions of condensation reaction were temperature 35℃,reaction time 5h and mole ratio n （formaldehyde）：n （n-heptaldehyde）：n （sodium hydroxide）=4：1：1.3 with w （sodium hydroxide sulution）=10% as catalyst, Through neutralization by adding formic acid,2,2-dimethylol heptaldehyde was purified and its mass content reached 67.8%. The structure of the product was confirmed by IR.

关 键 词：2 2-二羟甲基庚醛 羟醛缩合 甲醛 庚醛 

分 类 号：TQ224.129[化学工程—有机化工]