acetic acid anhydride的意思|示意

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。

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。

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。

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；

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。