乙酰乙酸乙酯

气相色谱法测定依达拉奉合成原料乙酰乙酸乙酯中的丙酮溶剂残留

Determination of Residual Acetone in Acetoacetic Ester ( the raw Material for the Synthesis of Edaravone ) by Gas Chromatography

目的：用气相色谱法测定依达拉奉合成起始原料乙酰乙酸乙酯中丙酮的残留量。

Objective To determine the contents of residual acetone in acetoacetic ester , the raw material for the synthesis of Edaravone , by gas chromatography .

乙醇对超临界CO2中乙酰乙酸乙酯异构化平衡的影响

Effect of Ethanol on the Tautomerism of Ethyl Acetoacetate in Supercritical Co_2

SiO2负载磷钨酸（盐）催化剂对乙酰乙酸乙酯与乙二醇缩合反应的催化性能

Catalytic Performance of Phosphotungstic Acid ( Salt ) Supported on SiO_2 for Acetalization of Ethyl Acetoacetate with Glycol

研究了乙酰乙酸乙酯（AA）不同程度的水解对B-Z振荡反应的影响。

The influence of the hydrolysis of acetacetic ether ( AA ) on B-Z oscillating reaction is studied .

乙酰乙酸乙酯的水解作用对B-Z振荡反应的影响

Influence of Hydrolysis of Acetacetic Ether on B-Z Oscillating Reaction

以苯甲醛与乙酰乙酸乙酯的Knoevenagel缩合为模型反应，研究了功能化后的SBA-15介孔分子筛的碱催化性能。

Activity of catalyst was studied by using knoevenagel condensation of benzaldehyde and acetacetic ester as model reaction .

合成并拆分了化合物A，用保险粉还原α-苄基乙酰乙酸乙酯合成了化合物F，同时对化合物B、C、D、E、G、H、I的合成进行了尝试和探讨。

The compound F was synthesized by reduction of the compound Ethyl a - benzyl-acetoacetate using Sodium Dithionite . At the same time , the synthsis of the seven compounds B , C , D , E , G , H and I was carried on and explored .

并且选取乙酰乙酸乙酯为底物，进一步研究了加热预处理温度和时间对面包酵母还原乙酰乙酸乙酯转化率及ee值的影响。

Ethyl acetoacetate was chosen as the model substrate . The effects of heating temperature and heating time during the pretreatment of baker ' yeast cells on the conversion and stereoselectivity of the reduction reaction were investigated .

用微波法制备的KF／γ-Al2O3，MgO／γ-Al2O3和MgO／NaY催化剂催化乙酰乙酸乙酯与巴豆醛Michael加成反应时产率都可达到80%以上，其中后两者的产率达90%。

The yield of Michael reaction of Ethyl acetoacetate and Crotonaldehyde catalyzed by KF / r - Al2O3 , MgO / r - Al2O3 , MgO / NaY all can reach to 80 % and the latter can reach to 90 % .

考察了影响收率的因素，最佳条件为：乙酰乙酸乙酯：醇：催化剂：带水剂为1mol：1.3mol：5g：100ml，反应在回流温度下进行，反应时间约3h。

The optimum reaction conditions were found as follows : ethyl acetoacetate : alcohol : catalyst : agent to remove water is 1.0mol : 1.3mol : 5g : 100ml ; reaction temperature is reflux temperature ; reation time is about 3h .

以铝、正丁醇、乙酰乙酸乙酯（EtAC）为原料，采用溶胶-凝胶法和N2超临界干燥技术制备出轻质纳米介孔固体Al2O3气凝胶，并对其光致发光特性进行了研究。

Alumina aerogels of light nano mesoporous solid material are prepared from Al , n-butanol and ethyl acetoacetate by the sol-gel rute and the N_2 supercritical drying technique . Also , their photoluminescence properties are studied .

乙酰乙酸乙酯（EAcAc）能够与Al2O3胶体颗粒表面的-Al-OH基团发生螯合作用从而降低Al2O3胶体颗粒的反应活性，并显著缩小固液相之间的界面差异，使体系的Gibbs焓变下降。

It was indicted that ethylacetoacetate ( EAcAc ) can chelated with - Al-OH groups on the surface of the colloidal particles , depressing the activity of the colloidal particles , reducing the interphase distinction between the solid and liquid phase remarkably , lowering the change of Gibbs enthalpy .

考察了面包酵母发酵液直接催化4-氯-乙酰乙酸乙酯（COBE）的不对称还原反应，并进行了手性添加物的筛选和反应条件的优化实验。

The asymmetric reduction of ethyl 4-chloro-3-oxobutanoate ( COBE ) to optically active ethyl 4-chloro-3-hydroxybutanoate ( CHBE ) directly catalyzed by yeast fermentation broth and the influence of chiral additives and reaction conditions on this reaction were studied .

碘催化合成乙酰乙酸乙酯1,3-丙二醇缩醛

Synthesis of Ethyl Acetoacetate Cyclic Propylene-1,3 Ketal by Catalyst Iodine

铈离子与乙酰乙酸乙酯体系引发烯类聚合的研究

Studies on vinyl polymerization initiated with ceric ion and ethyl acetylacetate system

4,4,4-三氟乙酰乙酸乙酯羰基还原酶产生菌的筛选及产酶条件研究

Screening of strain producing carbonyl reductase and optimization of its fermentation conditions

烯胺法合成α－甲基乙酰乙酸乙酯

Synthesis of α - Methyl Ethyl Acetoacetate by Enamine Alkylation

乙酰乙酸乙酯的烯醇化是反应进行的关键步骤。

The enolization of ethyl acetoacetate was the key step of the reaction .

介绍4-氯乙酰乙酸乙酯的合成及应用。

Synthesis and application of4-chloracetyl acetidin were introduced .

面包酵母非水相催化乙酰乙酸乙酯的不对称还原反应

A Study on Asymmetry Reduction of Ethyl Acetoacetate of Bread Yeast in Organic Solvent

脱氢醋酸的工业生产方法有双乙烯酮法和乙酰乙酸乙酯法。

Optimization and retrofit of acrylic acid extracting tower in ethyl acrylate process flow ;

2-（3-硝基亚苄基）乙酰乙酸乙酯的合成

Synthesis of 2 - ( 3-Nitrobenzylidene ) acetoacetate

乙酰乙酸乙酯合成新方法

A New Synthesis Method of Ethyl Acetoacetate

α-甲基乙酰乙酸乙酯的合成

Synthesis of α - Methyl Acetoacetate Ethy

用红外光谱研究钛酸四丁酯与乙酰乙酸乙酯的反应历程

Study on the reaction mechanism of ethyl acetoacetate with tetra butyl titanate by infrared spectroscopy

β，γ-不饱和仲烃基乙酰乙酸乙酯的皂化及芳樟醇衍生物的合成

Saponification of β, γ - unsaturated sec-alkyl acetoacetic acid esters and the synthesis of linalool derivatives

微波辐射活性炭负载杂多酸催化合成乙酰乙酸乙酯缩酮

Synthesis of ketals of ethyl acetoacetate catalyzed by active carbon supported heteropoly acid under microwave irradiation

研究了聚乙二醇-400为相转移催化剂，乙酰乙酸乙酯和尿素合成6-甲基脲嘧啶的工艺条件。

The synthesis of6-methyluracil from ethyl acetoacetate and urea with PEG-400 as phase transfer catalyst was studied .

本文报道了α－甲基乙酰乙酸乙酯的烯胺法合成，探讨了烯胺法与水法的不同。

? Methyl ethyl acetoacetate was synthesized by enamine alkylation , which was compared with water process method .