用相转移催化合成蔗糖酯(Ⅰ)蔗糖硬脂酸酯的合成

Synthesis of sucrose Esters by Phase Transfer Catalysis (Ⅰ)Synthesis of Sucrose Stearate

阐述了在合成蔗糖硬脂酸酯中采用相转移催化的基本原理和方法,并考察了反应时间、原料的不同配比和催化剂用量对蔗糖硬脂酸酯产率的影响。得出在反应时间为3h,原料硬脂酸甲酯和蔗糖的摩尔配比为1:2.5,催化剂用量为硬脂酸甲酯摩尔数8—10%时,其蔗糖硬脂酸酯产率是89.4—91.3%,产物经纯化后测定,含蔗糖单硬酸酯83.5%。

In relation to the synthesis of sucrose stearate by phase transfer catalysis,the authors study its basic principle and method,and inspect the influences of reaction time,raw material proportioning, and catalyst consumption on the output rate in weight of sucrose stearate.The results reveal a raw ma- terial,methyl stearate and sucrose,proportioning of 1:2.5 mole numder for a reaction time of 3 hours;a sucrose stearate output rate in weight of 89.4—91.3% for a catalyst consumption of 8— 10% methyl stearate mole number;and a sucrose monostearate content of 83.5% in purified product.