The preparation of anisaldehyde by ozonolysis reaction from anethole was studied.

以茴香脑为原料,乙烷的混合物做溶剂,臭氧化法制备茴香醛。

Methyl thioacetate was prepared by using acetyl chloride and methyl mercaptan as starting raw material in this paper.The yield of product is 69.3%.Itcan be used in seasoning flavor.

对可用于各种调味香精的食用香料硫代乙甲酯的合成进行了初步研究，产率达到693％，对所合成的产品做了红外光谱分析质子核磁共振分析，确定了其化学结构。

Results indicate that both of barium thioglycolate and barium-natrium thioglycolate can increase the thermal stability of PVC system, and the thermal stability of barium thioglycolate is better.

巯基乙钡巯基乙钡-钠都能提高PVC的热稳定性,但巯基乙钡的稳定性要好于巯基乙钡-钠。

The content of free acetic acid in cigarette smoke condensates was determined by GC-MS with isopropyl alcohol as the solvent and nonanol as the internal standard.

以异丙醇为溶剂,壬醇为内标,采用气相色谱-质谱法分析了卷烟烟气总粒相物中的游离乙,乙测定结果的相对标准偏差小于1%,平均回收率为99。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

文对巯基乙的合成工艺进行了比较研究,认为硫氢化钠法硫代硫钠法生产成,宜于选矿用巯基乙的生产,而硫脲法可得到较高浓度的巯基乙。

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.

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

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无水乙锌与1,5-萘二胺形成配位络合物的过程中，无水乙锌的结构从双齿型转变成单齿型。

The present situation of terpinyl acetate synthesis has been reviewed.One-step and two-steps process for the synthesis of terpinyl acetate and relevant reaction mechanism are discussed.

综述了乙松油酯的合成研究现状,讨论了一步法两步法合成工艺及相应的反应机理。

A new method of gas chromatographic analyses in the production of chloroacetic acid for process control using diazomethane as esterification agent is studied.

以重氮甲烷为酯化剂，用气相色谱法对氯乙生产的中控分析进行了研究。

The stability,decomposition and generation of the acetic acid halid and other organic halide in the treated water is briefly discussed.

简述了生成的卤化乙其它有机卤化物的稳定性及分解、生成等问题.

The synthesis of epalrestat,an aldose reductase inhibitor, was improved. The yield of its intermediate 3-carboxymethyl rhodanine was raised to 76.4%.

对醛搪还原酶抑制剂依帕司他的合成工艺作了改进，使中间体绕丹宁乙的收率提高到76．4％。

The hexadecanol bischloroacetate was synthesized fastly with the technique of microwave irradiation with the anhydrous cupric sulfate as catalyst.

研究了在无水硫铜的催化下,利用微波辐射技术快速合成氯乙十六酯的方法及影响反应收率的因素。

The synthetic method of trichloromethyl-benzyl-alcohol and trichlorometyl-benzyl-alcohol-acetate were reviewed, and the application of rosone were introduced.

讨论了三氯甲基苄醇三氯甲基苄醇乙酯的合成方法,介绍了结晶玫瑰的应用。