diazotization

简明释义

英[daɪˌæzətɪˈzeɪʃən]美[daɪˌæzətəˈzeɪʃən]

n. 重氮化作用

英英释义

单词用法

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例句

1.The technology and equipment for the process of side-chain chlorination, oxidation, diazotization and coupling are introduced.

介绍了侧链氯化、氧化、重氮化和偶合的工艺及设备。

2.The details were described below:Nitro-rhodamine and amino-rhodamine were synthesized. A series of 5 (6)-halo-rhodamine were obtain from amino-rhodamine through diazotization, Sandmeyer reaction.

主要包括以下内容：合成了硝基和氨基罗丹明，并通过氨基的重氮化，桑德迈尔反应得到了一系列5（6）位卤代罗丹明衍生物；

3.METHODS Balsalazide disodium was synthesized by reactions of condensation , reduction, diazotization , coupling and salification from 4-nitrobenzoyl chloride.

方法以对硝基苯甲酰氯为起始原料，经缩合、还原、重氮化、偶合、成盐等反应制得巴柳氮二钠。

4.The starting reagent, p-trifluoromethylaniline, was subjected to diazotization, oximation, and hydrolyzationto synthesize p-trifluoromethyl benzaldehyde, with a total yield of 35.

以对三氟甲基苯胺为原料，经重氮化、肟化、水解制得对三氟甲基苯甲醛，收率35。

5.Ciba has developed a nitrite feed rate gauge system for controlling process of continuous diazotization by polar voltage method, and Hoechst has developed newly an equipment for continual coupling.

汽巴公司发明了用极性电压法控制连续重氮化过程中亚硝酸盐加入速度的探测系统，赫斯特公司发明了连续式偶合装置。

6.Acylase I was immobilized on Y-type molecular sieve by using 4 kinds of methods, namely, adsorption, adsorption-crosslink, coupling and coupling-diazotization.

以Y型分子筛为载体，分别采用吸附法、吸附-戊二醛交联法、偶联法和偶联-重氮法4种方法对氨基酰化酶i进行固定化。

7.Ciba has developed a nitrite feed rate gauge system for controlling process of continuous diazotization by polar voltage method, and Hoechst has developed newly an equipment for continual coupling.

汽巴公司发明了用极性电压法控制连续重氮化过程中亚硝酸盐加入速度的探测系统，赫斯特公司发明了连续式偶合装置。

8.METHODS:This compound was synthesize by steps of ammonolysis, hydrogenize, diazotization and coupling from 4 nitrobenzoyl chloride.

方法：以对硝基苯甲酰氯为原料，经氨解、氢化、重氮化及偶合四步反应得到了巴柳氮。

9.Disperse 104 was synthesized by a process starting from diazotization of 2-chrolo-4-nitroaniline, followed by coupling, reduction; and then re-diazotization and re-coupling.

以2 - 氯- 4 - 硝基苯胺为原料，先经过重氮化、偶合反应合成出对硝基偶氮苯，经还原后再进行重氮化与偶合反应制备出最终产品分散黄104 。

10.A common application of diazotization is in the preparation of colored compounds for textiles.

偶氮化的一个常见应用是在纺织品中制备彩色化合物。

11.After the diazotization step, the reaction mixture was cooled to room temperature.

在偶氮化步骤之后，反应混合物被冷却至室温。

12.In organic chemistry, diazotization is used to convert primary aromatic amines into diazonium salts.

在有机化学中，偶氮化用于将初级芳香胺转化为重氮盐。

13.The efficiency of diazotization can be affected by the pH of the reaction medium.

偶氮化的效率可能会受到反应介质pH值的影响。

14.The process of diazotization is crucial in the synthesis of azo dyes.

偶氮化过程在合成偶氮染料中至关重要。

作文

In the realm of organic chemistry, various reactions play a crucial role in synthesizing complex compounds. One such significant reaction is known as diazotization. This process involves the conversion of primary aromatic amines into diazonium salts through the reaction with nitrous acid. The importance of diazotization lies not only in its ability to create intermediates for further chemical transformations but also in its application in dye manufacturing and other industrial processes. Understanding diazotization is essential for chemists because it opens up pathways to synthesize azo compounds, which are widely used as dyes in textiles and food products.The mechanism of diazotization can be described in several steps. Initially, a primary aromatic amine is treated with nitrous acid, typically generated in situ from sodium nitrite and hydrochloric acid. This reaction occurs at low temperatures to prevent the decomposition of the diazonium salt formed. The resulting diazonium ion is highly reactive and can undergo various substitution reactions, leading to the formation of different aromatic compounds. For instance, when reacted with phenols or alcohols, it can yield azo dyes, which are characterized by their vivid colors.One of the fascinating aspects of diazotization is its versatility. The diazonium salts produced can participate in coupling reactions with various nucleophiles, allowing for the synthesis of a wide range of substituted aromatic compounds. This feature is particularly valuable in the field of synthetic organic chemistry, where the ability to modify aromatic systems is often required. Moreover, the stability of diazonium salts under certain conditions makes them suitable for storage and transportation, which adds to their utility in industrial applications.In addition to its synthetic applications, diazotization has also been studied for its role in biological systems. Some studies have suggested that diazonium compounds may exhibit antibacterial properties, opening new avenues for research in medicinal chemistry. Furthermore, the environmental impact of azo dyes, which are produced through diazotization, has led to increased scrutiny of this process. As a result, chemists are now exploring more sustainable methods of producing dyes that minimize waste and toxicity.In conclusion, diazotization is a fundamental reaction in organic chemistry that has far-reaching implications in both synthetic and industrial contexts. Its ability to generate diazonium salts, which serve as versatile intermediates, makes it a vital tool for chemists. As we continue to explore the intricacies of chemical reactions, understanding processes like diazotization will remain essential for advancing both scientific knowledge and practical applications in various fields. By mastering the principles of diazotization, chemists can contribute to the development of new materials and technologies that enhance our daily lives.

在有机化学领域，各种反应在合成复杂化合物中发挥着至关重要的作用。其中一个重要的反应被称为重氮化。这个过程涉及将初级芳香胺转化为重氮盐，通过与亚硝酸反应。重氮化的重要性不仅在于它能够创造用于进一步化学转化的中间体，还在于它在染料制造和其他工业过程中的应用。理解重氮化对化学家至关重要，因为它开启了合成偶氮化合物的途径，这些化合物广泛用于纺织品和食品产品的染色。重氮化的机制可以通过几个步骤来描述。最初，初级芳香胺与亚硝酸反应，通常是通过在现场生成的亚硝酸钠和盐酸来实现。此反应在低温下进行，以防止形成的重氮盐分解。所产生的重氮离子具有高度反应性，可以进行各种取代反应，从而形成不同的芳香化合物。例如，当与酚或醇反应时，它可以产生偶氮染料，其特征是鲜艳的颜色。重氮化的一个迷人之处在于它的多功能性。生成的重氮盐可以与各种亲核试剂发生耦合反应，从而合成一系列取代的芳香化合物。这一特性在合成有机化学领域尤为宝贵，因为修改芳香系统的能力往往是必需的。此外，在某些条件下，重氮盐的稳定性使其适合储存和运输，这增加了它们在工业应用中的实用性。除了合成应用外，重氮化还被研究其在生物系统中的作用。一些研究表明，重氮化合物可能表现出抗菌特性，为药物化学的研究开辟了新的途径。此外，随着对通过重氮化生产的偶氮染料环境影响的日益关注，化学家们现在正在探索更可持续的方法来生产减少废物和毒性的染料。总之，重氮化是有机化学中的一种基本反应，在合成和工业背景中具有深远的影响。它产生的重氮盐能够作为多功能中间体，使其成为化学家的重要工具。随着我们继续探索化学反应的复杂性，理解像重氮化这样的过程将始终是推进科学知识和实践应用的关键。通过掌握重氮化的原理，化学家可以为开发新材料和技术做出贡献，从而改善我们的日常生活。