ethers

This reaction of O-alkylating phenols by carboxylic esters is a good method to pos-sess distinctive features of preparing aseries of aryl alkyl ethers.

酚氧羧酸酯烷基化反应，乃是一种颇具特色用来制取一系列芳基烷基醚的良好方法。

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The development of crown ethers as ion carrier and its application in different forms of membranes are described.

本文论述了冠醚作为离子载体及其在不同膜形式中应用的新进展。

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Synthesis of noncyclic crown ethers with 1 phenyl 3 benzoyl thiocarbamide as terminal groups(ⅱ)

含有1－苯基－3－苯甲酰基硫脲端基的开链冠醚的合成（Ⅱ）

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This kind of macrocyclic calix [ 4] crown ethers can be used as metal ion carrier or as rotaxanes, catenanes, which are the construction modules for molecular machines and has a practical potential.

该类大环杯[4]冠醚在作为金属离子载体或作为轮烷、索烃等分子机器的构建单元等方面具有潜在的应用。

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Synthesis of open-chain crown ethers containing thiourea groups(ⅲ)

含硫脲基开链冠醚的合成（Ⅲ）

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A review with 21 references on development and applications of calix crown ethers are described.

摘要综述了杯芳冠醚的产生、发展及应用研究的新进展,展望了它的工业应用前景.

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The effects of nonionic surfactants, alkyl polyoxyethylene ethers ( AEO), on the properties of heavy alkylbenzene sulfonate ( HABS) surfactant systems in enhanced oil recovery are studied.

本文研究了在重烷基苯磺酸盐（HABS）驱油体系中加入非离子表面活性剂长链脂肪醇聚氧乙烯醚（AEO）对驱油体系性能的影响。

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Synthesis and characterizations of u(ⅵ) and th(ⅳ) complexes with two open-chain crown ethers with terminal quinolyl groups

末端基为喹啉基的两个开链冠醚与铀（Ⅵ），钍（Ⅳ）配合物的合成与表征

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Chromogenic Crown Ethers III. studies on Synthesis and electronic spectra of a new species of Chromogenic Crown Ether

生色冠醚研究&Ⅲ.一种新型生色冠醚的合成和配位性质的电子光谱研究

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Distribution of Polybrominated Diphenyl Ethers in Marine Fishes from Yueqing Bay Sea Area

乐清湾海域鱼类中多溴联苯醚的分布特征

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As an important octane booster in unleaded gasoline , the need for ethers becomes more and more.

醚类作为重要的高辛烷值调和组分, 需求量日益增加,醚化催化剂的研究也越来越活跃.

网络文摘精选

RESEARCH FOR COMPLEXING UO_2~ (++) IN SEAWATER ON SEVERAL NEW CHAIN QUINOLYL CROWN ETHERS Determination of Toluene and Xylene using a Piezoelectric Crystal Sensor Coated with Crown Ethers

若干新型含喹啉开链冠醚对海水中铀酰离子络合作用的研究冠醚涂层压电石英晶体传感器对甲苯、二甲苯的检测研究

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Except the bioconcentration factors ( BCFs) of Foshan sludge treated Ipomoea aquatic plant to chlorobenzenes and ethers were more than 1.0, all the others were less than 1.0.

除佛山污泥处理的通菜对氯苯类和醚类的生物浓缩系数（BCF）大于1外，其余均小于1.0。

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This article reviewed the synthesis of N-substituted aza crown ethers and their new applications to the field of selective complexation and extraction for metal ions.

摘要综述了n-取代氮杂冠醚的合成和对金属离子的选择性络合和萃取研究的新进展。

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MALDI-TOF-MS analysis of a new kind of crown ethers

新型冠醚化合物的MALDI-TOF-MS研究

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The synthesis of seven novel crown ethers with di-functional groups by Williamson reaction was described in this thesis.

本论文描述通过Williamson醚化反应合成了七种新型的双官能团冠醚化合物。

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Cesium carbonate catalyzed O-alkylation of phenol to synthesize alkly aryl ethers.

摘要研究了碳酸铯催化酚与卤代烃反应制备烷基芳醚.

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Synthesis of thio ethers and thiocyanic acid esters using triphase catalysis

芳香族对称硫醚和硫氰酸酯的三相催化合成

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Alkylphenol polyoxyethylene ethers ( APEO) are one kind of the commonly used non-ionic surfactants since many years and are used widely in textile auxiliary production.

烷基酚聚氧乙烯醚（APEO）是多年来常用的非离子表面活性剂，广泛应用于纺织印染助剂的生产。

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Synthesis of a new series of acyclic crown ethers bearing a phenol ether central group and preliminary study on their coordination properties

含酚醚中心功能基开链冠醚的合成及其配位性能的研究

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The nicramine ethers perform two functions in the smokeless powder composition.

硝胺醚在无烟火药成份中有两种作用.

词典精选例句

Synthesis of Noncyclic Crown Ethers with 5-methyl-1,3,4-Thiadiazole-2-thio as Terminal Groups

5-甲基-1,3,4-噻二唑-2-硫为端基的非环冠醚的合成

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Synthesis, Structure and Characterization of Amide-Based Open-Chain Crown Ethers and Their Complexes

酰胺型开链冠醚及其配合物的合成、结构及表征

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The hydroxyl groups can be changed into esters , ethers , acetals and ketals, etc.

最常用的羟基保护基可归纳为三类:酯类 、 醚类和缩醛或缩酮类.

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The synthesis of amide-type aza-crown ethers

酰胺型氮杂冠醚的合成

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The nitramine ethers perform two functions in the smokeless powder composition.

硝胺醚在无烟火药成份中有两种作用。

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Schiff Bases and Secondary Amines Containing Two Benzo-15-crown-5 Units II. Potassium Ion Selective PVO Membrane Electrodes Based on Bis-Crown Ethers as Carrier

Schiff碱型和仲胺型双冠醚Ⅱ.用双冠醚作载体的PVC膜钾离子选择性电极

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The selective indirect electrical oxidation of benzyl ethers was studied with the double mediators under phase transfer catalysis ( tetrabutyl ammonium hydrogen sulphate).

研究了相转移催化剂（Bu4NHSO4）作用下苄基醚用双媒质Cr（）/Ag（）体系选择性间接电氧化。

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Synthesis of open chain crown ethers with p-chloroaniline as terminal group

对氯苯胺为端基的酰胺型开链冠醚的合成

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Potassium Ion Selective PVC Membrane Electrodes Based on Chalcones Crown Ethers as Carrier

几种查耳酮冠醚衍生物的PVC膜钾离子选择电极的研究

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