The regioselective nitration of toluene and chlorobenzene with nitrates and supported nitrates on solid acid catalysts and supports in the presence of acetic anhydride is studied.
该文讨论了应用固体酸催化剂和载体，在醋酐存在下，采用硝酸盐和载体硝酸盐硝化甲苯和氯苯的选择性。
METHODS: Potentiometric titration was adopted to determine the content of terbinafine hydrochloride using glacial acetic acid as solvent, acetic anhydride instead of mercury acetate.
方法：采用电位滴定法，以冰醋酸为溶剂，用适量醋酐代替现行标准中使用的醋酸汞，建立了测定盐酸特比萘芬原料药含量的方法；
Sulfuric acid and acetic anhydride were used as a cyclizing agent to prepare Ofloxacin intermediate. The reaction could be carried out under moderate conditions and facilitate industrial produce.
用硫酸乙酐混合物作环合剂，制备了氟嗪酸中间体．该方法具有反应条件温和、价格便宜、后处理简单的优点，适用于工业化生产。
The orthogonal design was used in the optimum synthesis of cyclohexyl nitrate with the mixture of nitric acid and acetic anhydride as the nitrating agent of cyclohexanol.
以硝酸-醋酐混合物为环己醇的硝化剂，利用正交试验设计描述了硝酸环己酯的优化合成。
Acetylene has become increasingly prominent as a raw material for a whole series of organic compounds, among them acetaldehyde, acetic acid, and acetic anhydride.
对于整个系列的有机化合物，包括乙醛、乙酸、醋酸酐，乙炔已经成为越来越重要的原材料。
Experiments proved that before incomplete hydrolysis, acetic anhydride not only couldn'treplace acetic acid, but also had indirect masking action for the detection of impurities.
试验还证明，醋酸酐在未完全水解之前不仅不能代替醋醚，相反对与杂质检出有间接的掩蔽作用。
In the presence of acetic acid and polyethylene glycol, chromic anhydride and acenaphthene react under mild condition and acenaphthene can completely convert into acenaphthenone.
在醋酸、聚乙二醇存在下，铬酸酐和苊在温和的条件下反应，苊可以完全转化为苊酮。
The hydrophobic gardenia blue pigment was prepared with the water-soluble gardenia blue pigment esterified by acetic anhydride, and catalyzed by hydrochloric acid.
研究有机溶剂/磷酸氢二钾双水相体系对栀子黄废液中栀子苷的萃取条件，并将萃取后的栀子苷用于栀子蓝色素的生产。
In this paper, 1 acetylaminoanthraquinone was synthesized by using 1 aminoanthraquinone and acetic anhydride as starting materials and by using acetic acid as solvent.
本文以1?氨基蒽醌和乙酐为原料，乙酸作溶剂，合成了1?乙酰氨基蒽醌。
The both producing of acetic acid and anhydride acetic acid by methanol carbonylation is important, as well as the study of new technology.
对镍催化剂上常压下乙醇气相羰基化合成丙酸及丙酸乙酯进行了研究。
The both producing of acetic acid and anhydride acetic acid by methanol carbonylation is important, as well as the study of new technology.
对镍催化剂上常压下乙醇气相羰基化合成丙酸及丙酸乙酯进行了研究。
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