bromination

简明释义

英[/ˌbroʊməˈneɪʃən/]美[/ˌbroʊməˈneɪʃən/]

n. [无化] 溴化；溴处理

英英释义

单词用法

同义词

反义词

例句

1.Many kinds of synthetic methods for imazamox are introduced. The industrialization of post-methoxy methylation-bromination will be the most possible in above mentioned methods.

介绍了多种合成方法，其中以“后甲氧甲基化-溴化法”最有希望工业化。

2.METHODS The compound was synthesized through the reaction of cyclization, split, bromination et al and using 1,3-propyl bromide and ethyl acetoacetate as raw materials.

方法以1，3-溴丙烷与乙酰乙酸乙酯为原料经环合、开环、溴代等反应合成。

3.In this paper, we reported a new method of bromination of acetophenone using potassium bromate in phosphoric acid. Some factors that effect yield are also discussed.

探讨了用溴酸钾—磷酸体系溴化苯乙酮的溴化新方法，并讨论了影响反应收率的几个因素。

4.The influence of temperature on yield and colour of product in bromination of benzene ring as well as the influence of bromine feeding speed on yield of brominated sidechains were investigated.

考察了反应温度对苯环上溴代产物收率和色泽的影响以及溴素滴加速度对侧链光溴代产物收率的影响。

5.The influence of temperature on yield and colour of product in bromination of benzene ring as well as the influence of bromine feeding speed on yield of brominated sidechains were investigated.

考察了反应温度对苯环上溴代产物收率和色泽的影响以及溴素滴加速度对侧链光溴代产物收率的影响。

6.A detailed study for the synthesis of hexabromobenzene by means of direct bromination has been conducted, and some modifications to the classical method were proposed.

对直接溴化法合成六溴苯作了系统的研究，并对文献方法进行了一系列的改进。

7.A quantitative analysis method-Thin layer chromatography-bromination-determine amine method was established for determining two active ingredients in the mixture of MTMC and phoxim.

速灭辛乳油是由速灭威和辛硫磷复配而成，采用薄层分离，分别用碱解定胺法和溴化法对两种有效成分进行定量分析。

8.Bromacil was synthesized using 2-bromobutane and urea as the starting materials in three steps including condensation, cyclization and bromination with total yield of 61%.

以2 -溴丁烷和尿素作为起始原料，经缩合、环化、溴代三步反应得到除草定，总收率为61%。

9.The 3,4,5 trimethoxybenzaldehyde is synthesized from p cresol in four steps of bromination, hydrolyzation, methoxylation, and methylation, with an overall yield of 53.

以对甲酚为原料经溴化、水解、甲氧基化和甲基化4步反应合成药物中间体3，4，5-三甲氧基苯甲醛，总收率达53。

10.Memantine hydrochloride was synthesized from 1,3 dimethyladamantane by bromination, acetamidation with acetonitrile in sulfuric acid and hydrolysis with an overall yield of 67.8%.

以1，3-二甲基金刚烷为原料，经溴化、乙腈和硫酸的作用下乙酰胺基化、水解、成盐等反应及改进的后处理方法得到盐酸美金刚，总收率6 7。8%。

11.One common application of bromination is in the production of flame retardants.

溴化的一个常见应用是在阻燃剂的生产中。

12.In the laboratory, the bromination of alkenes can be achieved using bromine water.

在实验室中，烯烃的溴化可以通过溴水实现。

13.The bromination reaction is often monitored using UV-Vis spectroscopy.

溴化反应通常使用紫外-可见光光谱法进行监测。

14.The bromination of aromatic compounds can lead to significant changes in their reactivity.

芳香化合物的溴化会导致其反应性发生显著变化。

15.The process of bromination is commonly used to introduce bromine into organic compounds.

溴化过程通常用于将溴引入有机化合物中。

作文

Bromination is a chemical reaction that involves the addition of bromine to an organic compound. This process is significant in organic chemistry and is used widely in various applications, including pharmaceuticals and agrochemicals. The importance of bromination (溴化) lies in its ability to modify the properties of organic molecules, enhancing their reactivity and stability. For instance, in the synthesis of certain drugs, bromination (溴化) can introduce functional groups that are crucial for biological activity.The mechanism of bromination (溴化) typically involves the formation of a bromonium ion, which is a cyclic intermediate that facilitates the addition of bromine across double bonds in alkenes. This reaction can be performed under various conditions, such as in the presence of light or heat, which initiates the radical mechanism. The versatility of bromination (溴化) allows chemists to selectively target specific sites on a molecule, making it a valuable tool in synthetic organic chemistry.One of the most common methods of bromination (溴化) is the electrophilic addition of bromine to alkenes. In this reaction, bromine molecules approach the double bond, leading to the formation of the bromonium ion. This intermediate then reacts with a nucleophile, often a bromide ion, resulting in the formation of vicinal dibromides. Such compounds are essential in the synthesis of more complex molecules.In addition to being a fundamental reaction in organic synthesis, bromination (溴化) has environmental implications as well. Some brominated compounds have been found to be effective flame retardants, which are used in various materials to reduce flammability. However, the environmental persistence and potential toxicity of certain brominated compounds have raised concerns, leading to increased scrutiny and regulation of their use.Moreover, bromination (溴化) plays a role in the production of brominated vegetable oils, which are used as emulsifiers in some food products. While these additives help stabilize flavors and prevent separation, their safety has been questioned, prompting discussions about the need for regulations in food chemistry.In conclusion, bromination (溴化) is a crucial reaction in organic chemistry that serves multiple purposes, from drug development to industrial applications. Its ability to modify molecular structures makes it an important process for chemists. However, as with many chemical reactions, the implications of bromination (溴化) extend beyond the laboratory, influencing environmental policies and public health discussions. Understanding the benefits and risks associated with bromination (溴化) will be essential for future advancements in both synthetic chemistry and regulatory practices.