epoxides

简明释义

英[ɪˈpɒksaɪdz]美[eˈpɑːksaɪdz]

n. [有化]环氧化合物；环氧衍生物（epoxide 的复数）

英英释义

单词用法

同义词

反义词

例句

1.Chlorohydrin production of propylene oxide with the impurities except for acetaldehyde, propionaldehyde and hydrocarbon, epoxides, halogenated alkanes, acetone, alcohols, such as.

用氯醇法生产的环氧丙烷中所合杂质除有乙醛、丙醛外，还有烃类、环氧化物、卤代烷、丙酮、醇类等。

2.Toxic matagenic and carcinogenic PAH diol epoxides can be derived from PAHS, which are responsible for most cases of lung cancer.

有毒的matagenic和致癌物质PAH二醇环氧化合物均来源于多环芳香烃(PAH)，它是导致大多数肺癌的罪魁祸首。

3.The industrial synthesis of certain optically active intermediates, including chiral amino acids, carboxylic acids, alcohols, amines and epoxides is reviewed.

重点叙述了某些光学活性中间体的工业合成技术，包括手性氨基酸、手性羧酸、手性醇、手性胺和手性环氧化物。

4."These results are significant because PAH diol epoxides react readily with DNA, induce mutations, and are considered to be ultimate carcinogens of multiple PAH in cigarette smoke, " the study said.

研究认为：“这项结果相当重要，因为多环芳香环氧二醇（PAH diol epoxides）易与DNA反应，引发突变，所以被认为是吸烟产生的众多环芳香烃中最严重的致癌物质。”

5.Lecture 12: Alcohols, Ethers, Epoxides, Sulfides.

第十二堂：醇类，醚类，环氧化物，硫化物。

6.Lecture 11: Alcohols, Ethers, Epoxides, Sulfides.

第十一堂：醇类，醚类，环氧化物，硫化物。

7.The epoxides were obtained with up to 90% yields in the reaction system with air.

在空气存在下其氧化产物的产率这90%以上。

8.These results are significant because PAH diol epoxides react readily with DNA, induce mutations, and are considered to be ultimate carcinogens of multiple PAH in cigarette smoke.

这些结果具有重要意义，因为多环芳烃二醇环氧化物极易与DNA反应，进而导致变异，因此被视为香烟烟雾中所含多种多环芳烃中最重要的致癌物质。

9.The review is focused on the recent development of asymmertric synthesis of chiral epoxides by biocatalyzing prochiral alkenes.

手性环氧化物在合成上具有重要的应用价值。

10.In organic chemistry, the synthesis of epoxides 环氧化物 is a common reaction involving alkenes.

在有机化学中，合成epoxides 环氧化物 是一个常见的反应，涉及烯烃。

11.The use of epoxides 环氧化物 in the production of adhesives has increased due to their strong bonding properties.

由于其强大的粘合特性，epoxides 环氧化物 在粘合剂生产中的使用增加了。

12.Researchers are exploring the potential of epoxides 环氧化物 as intermediates in the synthesis of pharmaceuticals.

研究人员正在探索epoxides 环氧化物 作为药物合成中间体的潜力。

13.The stability of epoxides 环氧化物 makes them suitable for various industrial applications.

由于其稳定性，epoxides 环氧化物 适合用于各种工业应用。

14.When exposed to heat, epoxides 环氧化物 can undergo ring-opening reactions.

当暴露于热量时，epoxides 环氧化物 可以发生开环反应。

作文

Epoxides are a class of organic compounds that contain a three-membered cyclic ether structure. This unique structural feature gives epoxides distinct chemical properties, making them valuable intermediates in various chemical reactions. The reactivity of epoxides is largely due to the strain in their three-membered ring, which makes them more susceptible to nucleophilic attack compared to other types of ethers. As a result, epoxides play a crucial role in organic synthesis, particularly in the production of pharmaceuticals, agrochemicals, and polymers. One of the most common methods for synthesizing epoxides is through the reaction of alkenes with peracids, such as m-chloroperbenzoic acid (m-CPBA). This reaction not only forms the epoxide but also generates a carboxylic acid as a byproduct. The ability to create epoxides from readily available alkenes makes this process particularly appealing for chemists looking to develop new compounds. In addition to their utility in synthesis, epoxides have been studied for their biological activities. Some epoxides exhibit antimicrobial properties, making them potential candidates for the development of new antibiotics. Furthermore, certain epoxides have shown promise in cancer treatment due to their ability to interact with DNA and disrupt cellular processes. This has led to increased interest in understanding the mechanisms behind these biological effects and how they can be harnessed in medicine. However, it is important to note that while epoxides can be beneficial, they can also pose health risks. Many epoxides are highly reactive and can form toxic compounds when they react with biological molecules. For example, the epoxide form of styrene is known to be mutagenic and carcinogenic, raising concerns about exposure in industrial settings. Therefore, safety measures must be implemented when handling epoxides to minimize potential risks. The versatility of epoxides extends beyond just their chemical reactivity. They are also used in the production of epoxy resins, which are widely employed in coatings, adhesives, and composite materials. Epoxy resins are known for their excellent mechanical properties, chemical resistance, and durability, making them suitable for a variety of applications, from construction to electronics. In conclusion, epoxides (环氧化合物) are an important class of compounds in organic chemistry with diverse applications in synthesis, medicine, and material science. Their unique structure and reactivity enable chemists to create a wide range of products, while their potential health risks necessitate careful handling. As research continues to uncover new uses and effects of epoxides (环氧化合物), it is clear that they will remain a significant area of study in both academic and industrial settings.