The effect of reaction conditions on the yield of carboxylic ester was investigated.
考察了反应条件对酯化产率的影响。
The results of application evaluation indicate that this mixed carboxylic ester is a kind of flotation agent for coal preparation with good performance.
经应用评价结果表明，该羧酸混合酯是一种性能优异的选煤浮选剂。
Corticoid 17, 21-dicarboxylic esters and corticosteroid 17-carboxylic ester 21-carbonic esters, processes for their preparation and pharmaceuticals containing these compounds.
类皮质素-17,21 -二羧酸酯和类皮质素- 17 -羧酸酯- 21 -碳酸酯，其制备方法和含有它们的药物。
Thermal-oxidative stability of poly (vinyl chloride) (PVC) by carboxylic ester rare earth salt (CERES) has been studied during thermoexidativeageing in static condition in air.
用热烘法研究了羧酸酯稀土（CERES）对聚氯乙烯（PVC）的热氧稳定作用。
The present invention relates to the stable and high purity 7-phenacetylamino-3-pyridylmethyl -3-cynnematin-4-p-methoxybenzyl carboxylic ester crystal and its preparation process.
本发明涉及一种稳定的、高纯度的7-苯乙酰氨基-3-吡啶甲基-3-头 孢菌素-4-羧酸对甲氧苄酯晶体及其制备方法。
The sym- biosis of indoor microorganism, kinds of mite and its harm, anti-mite agents, test method of anti-mite effects as well as the an- ti-mite effect using carboxylic ester are all introduced.
作者从室内尘埃中微生物的共生关系、室内螨虫的种类及其危害、防螨虫的制剂、防螨虫效果的试验方法和羧酸酯类的防螨效果等方面作详细介绍，认为采用化学法防螨整理可获得理想的效果。
Carboxylic acid ester compound, liquid crystal compound, liquid crystal composition, liquid crystal element and light modulation method.
羧酸酯化合物，液晶化合物，液晶组合物液晶元件和光调制方法。
Synthesis of acyl azide from aldehyde, or acylhydrazine, or carboxylic acid , or acyl chloride, or anhydride, or ester is introduced in this paper.
介绍了由醛、酰肼、羧酸、酰氯、酐或酯合成酰基叠氮化合物方法。
The synthetic methods of ester include acyl chloride reaction, carboxylic acid reaction, and inter-esterification reaction.
酯化的方法包括：酰氯法、羧酸法、酯交换法。
The research and application of carboxylic acid collector, phosphoric acid collector and ester collector for phosphorous ore are summarized in this paper.
本文从羧酸类捕收剂、磷酸类捕收剂和酯类捕收剂三个方面，分别综述了磷矿捕收剂的研究和应用进展。
In this paper several extractants containing a thioether group and another group such as carboxylic acid, ester or amide were synthesized.
本文合成了分子中含有硫醚基团和另一个基团如羧酸、酯、酰胺的萃取剂。
In the roots, there were carboxylic acid ester and alkane.
而茅莓根的主要化学成分是有机酸酯和烷烃。
The effect of potassium borohydride on ester and carboxylic acid reduction was introduced.
研究了硼氢化钾对酯和羧酸的还原作用。
Synthesis of coumarin-3-carboxylic acid through sodium ethoxide catalyzed synthesis of coumarin -3-carboxylic acid ethyl ester, followed by saponification, acidolysis cyclization was studied.
实验以水杨醛、丙二酸二乙酯为原料，乙醇钠为催化剂催化合成香豆素- 3 -羧酸乙酯，再经皂化、酸解环合合成香豆素- 3 -羧酸。
Esterification is a common organic reaction, usually with the catalysis of acid carboxylic acid and alcohol produce ester.
酯化反应是常见的有机反应，通常是在酸催化作用下由羧酸与醇反应生成酯。
A synthetic method of partial ester of carboxylic acid (PECA) surfactant was given in the paper.
文章提供了一种羧酸偏酯(简称PECA)表面活性剂的合成方法。
The invention relates to a phosphoryl carboxylic acid propofol ester derivative which has the general formula (I).
一种磷酰基羧酸丙泊酚酯衍生物，具有通式（I）。
L-Thiazolidine-2-thione-4-carboxylic acid ethyl ester was prepared from L-thiozolidine-2-thione-4-carboxylic acid and ethyl alcohol in the presence of the hydrate of ferric sulfate.
在硫酸铁水合物催化下由L- 四氢噻唑- 2- 硫酮- 4-羧酸与乙醇反应得到L-四氢噻唑-2-硫酮-4- 羧酸乙酯。
L-Thiazolidine-2-thione-4-carboxylic acid ethyl ester was prepared from L-thiozolidine-2-thione-4-carboxylic acid and ethyl alcohol in the presence of the hydrate of ferric sulfate.
在硫酸铁水合物催化下由L- 四氢噻唑- 2- 硫酮- 4-羧酸与乙醇反应得到L-四氢噻唑-2-硫酮-4- 羧酸乙酯。
应用推荐