脱氢枞酸蔗糖酯的无溶剂法合成  

Synthesis of Sucrose Dehydroabietate by Solvent-free Method

作　　者：崔国友[1] 莫炳荣 陈文纳[2] 黄科润 

机构地区：[1]广西化工研究院,广西南宁530001 [2]广西师范学院化学系,广西南宁530001

出　　处：《精细化工》2006年第12期1181-1185,共5页Fine Chemicals

基　　金：广西青年科学基金(0542016)~~

摘　　要：用精制的脱氢枞酸,在n(硫酸二甲酯)∶n(脱氢枞酸)=1∶1,碳酸钾为催化剂,反应时间为4 h,丙酮回流条件下,得到脱氢枞酸甲酯,产率为75%。脱氢枞酸甲酯与蔗糖在熔融下通过酯交换反应生成脱氢枞酸蔗糖酯,最佳条件为:n(脱氢枞酸甲酯)∶n(蔗糖)=1∶1.5,m(催化剂碳酸钾)∶m(反应物)=0.05∶1,m(乳化剂硬脂肪酸钠)∶m(反应物)=0.1∶1,温度140℃,压强0.5 kPa,反应时间5 h,产率可达32%,测定了其表面张力和乳化能力。临界胶束浓度(CMC)为:9.0×10-3mol/L;此时表面张力为18.42 mN/m。Methyl dehydroabietate was obtained from the purified dehydroabietic acid in 75% yield by reacting dehydroabietic acid and dimethyl sulfate in molar ratio 1：1, using potassium carbonate as catalyst and acetone as solvent. Sucrose dehydroabietate was synthesized by transesterifion of methyl dehydroabietate and sucrose without solvent. The optimum reaction conditions were n （methyl dehydroabietate） ： n （ sucrose ） = 1 ： 1.5, m （ catalyst ） ： m （ reactants ） = 0.05 ： 1, m （emulsifier） ： m （reactants） =0. 1：1 ,temperature 140℃ ,pressure 0.5 kPa and reaction time 5 h. Yield of sucrose ester was 32%. The final product had good capability of foaming and emulsification ,its CMC was 9.0 × 10^-3 mol/L,and the surface tension at this point was 18.42 mN/m.

关 键 词：脱氢枞酸 脱氢枞酸蔗糖酯 酯交换 

分 类 号：TQ423.3[化学工程]