丁酸乙酯

国内丁酸乙酯生产厂家大多采用传统的单锅间歇或半连续酯化工艺，存在原料消耗高、设备投资大、废水排放量大、操作成本高等缺点。

Nowadays most of the ethyl butyrate producing factories adopt the traditional technique , which is batch or half continual . It has the defect such as high material and energy consuming , large investment , more waste water exhausting etc.

光学活性R-2-羟基-4-苯基丁酸乙酯的制备

Synthesis of the Optical Active Compound of R-2-hydroxy-4-phenyl ethyl butyrate

甲基溶纤剂乙酸酯，甲氧基乙醇乙酸酯（R）-4-氰基-3-羟基丁酸乙酯的合成新方法

Methylcellosolve acetate A Novel Synthesis of ( R ) - 4-Cyano-3-hydroxybutyric Acid Ethyl Ester

不对称合成（R）-2-羟基-4-苯基丁酸乙酯的动力学

Kinetics of enantioselective hydrogenation to synthesize ethyl ( R ) - 2 - hydroxy - 4 - phenylbutyrate

面包酵母催化溶剂相不对称还原合成（R）-2-羟基-4-苯基丁酸乙酯

Enantioselective Synthesis of Ethyl ( R ) - 2 - Hydroxy - 4 - Phenylbutyrate Mediated by Saccharomyces cerevisiae in Organic Solvents

结论：通过IR谱确证一个化合物是目标物2-苄氧基-5-氟-4-嘧啶酮-3-丁酸乙酯，另一化合物是它的同分异构体。

Conclusions : One compound is identified as the title compound 2-benzyloxy-5-fluoro-4-oxo-pyrimidine-3-butyric acid ethyl ester , and the other one is its formula isomer .

本文确定了3-羟基丁酸乙酯本体聚合制备PHB为合适的工业化合成PHB的方法。

3-Hydroxybutyrate polymerized by itself is the most properly synthesis method of producing PHB in industrial scale .

利用GC／MS／DC联用仪测定了未套袋鸭梨和套袋鸭梨果实内的挥发性物质成份，结果表明，未套袋鸭梨含有23种挥发性物质，其中以丁酸乙酯和己酸戊酯为主。

The volatile constituents and contents in bagged and non bagged Yali pear fruits were studied by GC / MS / DC . The fruits of non bagged Yali pear contained 23 constituents of volatile in which the esters were dominant .

EuropeanCantaloupe含有丰富的乙酸丁酯、丁酸乙酯、乙酸-2-甲基-丁酯和乙酸己酯等香气成分。

European Cantaloupe was rich in acetic acid , butyl ester , butanoic acid , ethyl ester , 1-butanol , 2-methyl - , acetate and acetic acid , hexyl ester and other acetate esters or butyrate esters .

提出了3羟基丁酸乙酯本体聚合制备聚羟基丁酸酯（PHB）的工艺，设计了一套制备PHB的试验装置，确定了反应的试验方案。

A method to produce poly hydroxybutyrate ( PHB ) by bulk polymerization of 3-hydroxybutyrate was put forward . An experimental device was designed to produce PHB and the condition of reaction was confirmed .

3-羟基丁酸乙酯-巴豆酸乙酯-乙醇三元体系等压汽液平衡

Isobaric Vapor-Liquid Equilibrium for Ethyl 3-Hydroxybutyrate-Ethyl Crotonate-Ethanol System at 101.325 kPa

2-氧代-4-苯基丁酸乙酯不对称加氢反应的动力学和机理探讨

Reaction Kinetics and Mechanism of Enantioselective Hydrogenation of Ethyl 2-Oxo-4-Phenylbutyrate

面包酵母催化不对称还原2-羰基-4-苯基丁酸乙酯的研究

Asymmetric Reduction of Ethyl 2-oxo-4-phenylbutyrate Catalyzed by Baker 's Yeast

2-氧代-3,5,7-三氯吲哚丁酸乙酯的结构分析

Structural Analysis of 2_Oxo_3,5,7_ trichloro _indole_3_butyric Acid Ethyl Ester

对甲苯磺酸催化合成异丁酸乙酯的研究

A Study of Catalytic Synthesis of Ethyl Isobutyrate with p Toluene Sulfonic Acid

青梅酒中还有4-羟基苯乙醇、4-羟基丁酸乙酯。

Besides , 4-hydroxy-phenethanol and ethyl 4-hydroxybutyrate were also determined in fermenting wine .

4-氯-3-羟基丁酸乙酯的不对称合成

The Asymmetric Synthesis of Ethyl 4-Chloro-3-Hydroxybutyrate

脱水法合成3-羟基丁酸乙酯

Synthesis of Ethyl 3-hydroxybutyrate by Dehydration

含正丁醇的丙酸乙酯及丁酸乙酯二元物系超额焓的测定和关联

Measurement and Correlation of Excess Enthalpy of A Binary System of n-Butanol + Ethyl Propionate and n-Butanol + Ethyl Butyrate

本文概述了手性技术的重要性以及酶法催化拆分制备手性化合物的国内外进展，着重研究了4-氯-3-羟基丁酸乙酯的制备和拆分方法。

The importance of chiral technology and the progress on the preparation of optical active compounds by lipase were reviewed .

此外，还检测出乙酸乙酯、丁酸乙酯、己酸乙酯等猕猴桃特征香气成分。

And some characteristics of aroma components of kiwifruit were detected such as ethyl acetate ; butanoic acid , ethyl ester and hexanoic acid , ethyl ester etc.

利用面包酵母在非水相中不对称还原乙酰乙酸乙酯，制备了光学活性的手性化合物S（）-3-羟基丁酸乙酯。通过转化率和ee。

Optically active ethyl ( S ) - 3-hydroxybutyrate , a useful chiral synthon , was prepared by stereoselective reduction of ethyl acetoacetate of the bread yeast in organic solvent .

异丁醇与乙缩醛，丁酸乙酯与异戊醇，戊酸乙酯与乳酸乙酯的出峰先后与已有资料报道的出峰顺序一致。

Peak occurrence sequence of isobutyl alcohol , acetal , ethyl butyrate , isoamyl alcohol , ethyl pentanoate and ethyl lactate were in accord with the reports in previous data .

本法已得到希望的结果，丁酸乙酯的收率在80.17%～88.79%，产品的纯度在98%以上。

We have obtained the desired result . The yield of ethyl butyrate is 80 . 17 % - 88 . 79 % . The product purity is over 98 % .

基础酒经大水泥池贮存后，己酸乙酯、乳酸乙酯、丁酸乙酯在7～8个月达到最高值，故以7～8个月贮存期为宜；

The contents of ethyl caproate , ethyl lactate and ethyl butyrate in base liquor reached the maximum values after 7-8 months storage in cement pits ( accordingly , 7 ~ 8 months is the best storage period ) .

硫酸氢钠催化合成食用香料异丁酸苯氧乙酯

Synthesis of flavor phenoxyethyl isobutyrate catalyzed by sodium bisulfate

以3-羟基丁酸和乙醇为原料，在对甲苯磺酸的催化下分别以氧化钙、3A分子筛、无水硫酸镁为脱水剂，采用索氏提取器进行回流脱水合成3-羟基丁酸乙酯。

Preparation of ethyl 3-hydroxybutyrate from 3-hydroxybutyric acid and ethanol was studied . Reaction was carried out in a Soxhlet extracting set , with paratoluenesulfonic acid as catalyst and CaO , molecular sieve type 3A or MgSO_4 as dehydrating agent .