文档介绍：SO42-/Fe2O3型固体超强酸催化合成苹果酯-B
武永军吴丽卓馨刘超张德瑾
宿州学院化学化工学院
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摘    要:
以自制固体超强酸SO42-/Fe2O3催化乙酰乙酸乙酯和1, 2-丙二醇合成苹果酯-B。结果表明:SO42-/Fe2O3是催化合成苹果酯-B的良好催化剂, 最佳反应条件为:物料比n1 (1, 2-丙二醇) ∶n2 (乙酰乙酸乙酯) ∶1, %, 带水剂苯60ml, , %。产物的结构经折光率和红外光谱得到证实。
关键词:
SO42-/Fe2O3; 苹果酯-B; 1, 2-丙二醇; 乙酰乙酸乙酯;
作者简介:武永军(1986-) , 男, 安徽宿州人, 讲师, 主要从事化学化工教学与研究;E-mail:szxywyj@
基金:宿州学院2017年科研平台开放课题(2017ykf03)
Catalystic Synthesis of Apple Ester-B by Solid Super Acid SO42-/Fe2O3
WU Yongjun WU Li ZHOU Xin LIU Chao ZHANG Dejin
School of Chemistry and Chemical Engineering, Suzhou University;
Abstract:
The synthetic technology of fraistone ketal reaction from ethyl acetoacetate and 1, 2-Propanediol was studied by using SO42-/Fe2O3 solid super acid as catalyzation. The result shows that the catalytic performance of SO
42-/Fe2O3 catalyst is good, the optimal ketal reaction conditions were as follows: mole ratio of 1, 2-Propanediol to Ethyl acetoacetate ∶ 1, dosage of catalyst %, benzene 60 ml, ketal reaction time yield of fraistone was %.The structure of the product was proved by refractive index and IR spectrum.
Keyword:
SO42-/Fe2O3; fraistone; 1, 2-Propanediol; ethyl acetoacetate;
缩酮类香料属于缩羰基化合物, 近20年来, 作为新型香料在食品香料和日用香精中得到广泛运用, 常用于酒类、软饮料类、冰淇淋、化妆品等的调香和定香[1]。苹果酯属缩酮类化合物, 其化学名为2-甲基-2-乙酸乙酯基-1,