ethyl

The synthesis of ethyl vanillin from urotropin is a major method with high yields,simple process, and available raw materials.

乌洛托品法是合成已基香兰素的一种重要方法，它操作简单，原料易得，产率较高。

The bitter melon saponin was extracted by transonogram-assisted using 70% ethyl alcohol, then was purified by macroporous resin, and the straight of bitter melon saponin was obtained.

建立了高效液相色谱法对酒中功效成分——皂苷检测的方法。

The paper studied the preparation of bromine from basic Magnesium bromide in the production of maltol and ethyl maltol, the synthesis of bromethyl from bromine, sulfur and alcothol.

研究了以麦芽酚、乙基麦芽酚生产中的碱式溴镁废渣为原料制取溴;以溴、硫和乙醇合成溴乙烷的方法。

The turbidity was induced mainly by inorganic salt in seriflux and the ethyl fatty acid in brut liquor.

低度白酒浑浊及货架期沉淀的原因主要是由加浆水中的无机盐和原酒中的高级脂肪酸乙酯引起的。

The effect that isopropyl xanthogen ethyl formate is synthesized with isopropyl xanthate under differ condition has been studied.

考察了不同条件对异基黄药合成异基黄原酸甲酸乙酯的影响。

The major aromas were hexylic acid ethyl ester, benzyl ethanol, octylic acid and octylic acid ethyl ester.

主体风味成分是己酸乙酯、乙醇、辛酸和辛酸乙酯。

Synthesis of ethyl iso nicotinate using BTEAC (benzyl triethyl ammonium chloride) as phase transfer catalyst was studied.

以BTEAC(苄基三乙基氯铵)为相转移催剂合成了异烟酸乙酯。

A synthetic method of benazolin ethyl was present with ochloroaniline, ammounium rhodanide, sulfuryl chloride, sodium nitrite and ethyl chloroacetate as the raw materials.

报道了以邻氯胺、硫氰酸铵、硫酰氯、亚硝酸钠和氯乙酸乙酯为主要原料合成草除灵乙酯的方法。

The phenylacetyl ethanolamine,a low toxic precurson of benzylpenicillin,was synthesized by using ethyl phenylacetate and colamine as raw materials.

以乙酸乙酯和乙醇胺为原料合成了苄青霉素低毒前体乙酰基乙醇胺。

Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.

用乙酰乙酸乙酯法合成了2-庚酮,总得率为58.9%,纯度为98.5%.介绍了2-庚酮在相关领域中的应用.

In this paper, (S)- ethyl mandelate was obtained through chiral resolution of racemic ethyl mandelate by lipase.

扁桃酸乙酯是合成扁桃酸系列药物的重要中间体。

The synthesis of tridecane dicarboxylic acid diethyl ester with ethyl alcohol and tridecane dicarboxylic acid as reactants and cation exchange resin as catalyst had been studied.

以强酸性阳离子交换树脂为催剂,十三碳二元酸与乙醇为原料合成十三碳二元酸二乙酯,考察了影响反应的因素。

Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.

本文以紫外光谱为手段研究乙酰乙酸乙酯的酮-醇式互变异构现象;所得结果证实其醇式含量随溶剂极性的增加而减少。

Its catalytic performance in Heck reaction of iodobenzene with ethyl acrylate was studied.

研究了该催剂对碘代与酸乙酯反应的催性能及循环使用性能。

A series of toxic products were produced after photocatalysis on ethanol, such as acetaldehyde, ethyl formate, ethyl acetate, diethoxymethane, 1,1-diethoxyethane.

如乙醇的反应产物包括乙醛，乙酸乙酯，乙酸甲酯，缩醛等一系列有害物质。

Nefedipine was synthesized with m-Nitrobenzaldehyde,ethyl acetoacetate,ammonium acetate.

以间硝基甲醛,乙酰乙酸乙酯,氨试剂为原料。

The two now isonicotnic acid hydrazone and N-oxide isonicotinic acid hydrazone of ethyl furoyl acetates were synthesised. The condensations were carried out in ethyl alochol medium.

合成了呋喃甲酰乙酸乙酯异烟酰腙和呋喃甲酰乙酸乙酯N-氧异烟酰腙。缩合反应在乙醇中进行。

Activated carbon as the sorbent and catalyst support was capsulated with ethyl cellulose by phase separation methods.

摘要对兼具吸附和催剂载体功能的多孔结构活性炭，以乙基纤维素为材料用相分离进行包覆。

Because of all these disvantages acetylchloride is used to react with absolute ethyl alcohol and synthesize ethyl acetate.

鉴于传统方法存在以上缺点,采用乙酰氯代替乙酸作为原料,不使用任何催剂,不加热,常温反应来合成乙酸乙酯。