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：《应用化工》2007年第2期173-175,共3页Applied Chemical Industry

摘　　要：以甲醛和庚醛为原料,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35℃,n(甲醛)∶n(庚醛)∶n(NaOH)=4∶1∶1.3,缩合剂为10%NaOH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%。DMH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 5 h and mole ratio of n（ formaldehyde ）：n（n-heptaldehyde） ： n（ sodium hydroxide） = 4 ： 1：1.3 ,with 10% sodium hydroxide solution as catalyst,through neutralization by adding formic acid,2,2-dimethylolheptaldehyde was purified and its yield reached 67.8%. The structure of the product was confirmed by IR.

关 键 词：2 2-二羟甲基庚醛 甲醛 庚醛 羟醛缩合 

分 类 号：TQ031.2[化学工程]