dienes

简明释义

英[ˈdaɪiːnz]美[ˈdaɪiːnz]

n. 二烯烃；双烯

英英释义

单词用法

同义词

反义词

例句

1.The phase transfer catalyzed Wittig reaction of allyl diphenyl phosphonium salt with substituted aromatic aldehydes using potassium carbonate as base provides 1, 3-dienes with good E-selectivity.

本文报道了二苯基烯丙基型鏻盐与取代芳醛在碳酸钾作用下的固一液相转移催化反应。

2.The phase transfer catalyzed Wittig reaction of allyl diphenyl phosphonium salt with substituted aromatic aldehydes using potassium carbonate as base provides 1, 3-dienes with good E-selectivity.

本文报道了二苯基烯丙基型鏻盐与取代芳醛在碳酸钾作用下的固一液相转移催化反应。

3.By analyzing the fouling materials, it was found that coke formed by the condensation reactions of dienes and resin existed in the feed was the main component of the fouling materials.

通过对垢物组成进行分析，发现原料焦化汽油中二烯烃缩合及胶质缩合生焦是垢物生成的主要原因。

4.The mechanism and the various factors influencing the 1, 4 addition of Carbenes to dienes as well as the applications of these reactions in organic synthesis are reviewed.

讨论了卡宾1,4 -加成反应的机理、影响因素以及1,4 -加成在有机合成中的特殊应用。

5.The cross-linking of PVC resin is a resin comprising polymerizing dienes and polyenes cross-linker was added in the polymerization system of vinyl chloride monomer.

交联PV C树脂是在氯乙烯单体聚合体系中加入含有双烯和多烯的交联剂聚合而成的树脂。

6.Method for preparing telechelic 1,3-diene oligomers by the controlled free radical polymerization of 1,3-dienes in presence of a stable free radical.

通过在稳定的自由基存在下进行1，3-二烯的控制的自由基聚合制备1，3-二烯的遥爪低聚物的方法。

7.Dicyclopentadiene (DCPD) was a kind of dienes contained in cracking C_5 fraction and it was an important kind of raw material in chemical industry.

双环戊二烯(DCPD)是裂解C_5馏分中的一种二烯烃，是一种重要的化工原料。

8.Ring closing metathesis (RCM) of dienes to cycloalkene provides an important tool for C-C double bond formation catalyzed by metal carbene.

关环转换反应是形成碳碳双键的重要反应之一，即双烯化合物在金属碳烯催化下关环得到环烯类化合物。

9.Compounds containing two double bonds are called dienes.

包含两个双键的化合物叫做二烯烃。

10.In organic chemistry, dienes (二烯) are compounds that contain two double bonds.

在有机化学中，dienes (二烯) 是含有两个双键的化合物。

11.The reaction of dienes (二烯) with electrophiles is a key step in many synthetic pathways.

dienes (二烯) 与电亲体的反应是许多合成途径中的关键步骤。

12.Conjugated dienes (共轭二烯) have unique properties that make them useful in various applications.

共轭dienes (共轭二烯) 具有独特的性质，使它们在各种应用中非常有用。

13.The stability of dienes (二烯) can be affected by the presence of substituents.

dienes (二烯) 的稳定性可能会受到取代基存在的影响。

14.In polymer chemistry, dienes (二烯) are often used as monomers to create synthetic rubbers.

在聚合物化学中，dienes (二烯) 常用作单体来制造合成橡胶。

作文

In the world of organic chemistry, understanding the structure and reactivity of compounds is crucial for the development of new materials and pharmaceuticals. One important class of compounds that chemists often study are dienes, which are hydrocarbons that contain two double bonds. These compounds can be found in many natural products and synthetic materials, making them a significant area of research. The simplest example of a diene is butadiene, a four-carbon molecule with two double bonds. Butadiene is not only a key building block in the production of synthetic rubber but also serves as a valuable intermediate in the synthesis of various chemicals. Dienes can be classified into different types based on their structure. The most common types are conjugated dienes, which have alternating single and double bonds, and isolated dienes, where the double bonds are separated by more than one single bond. Conjugated dienes exhibit unique properties due to the delocalization of electrons across the double bonds. This delocalization allows for greater stability and reactivity in certain chemical reactions, such as electrophilic addition. One of the fascinating aspects of dienes is their ability to undergo Diels-Alder reactions, a powerful method for forming six-membered rings. In this reaction, a conjugated diene reacts with a dienophile, typically an alkene or alkyne, to produce a cyclohexene derivative. This reaction is widely used in the synthesis of complex organic molecules, including natural products and pharmaceuticals. The Diels-Alder reaction highlights the importance of dienes in organic synthesis, as it allows chemists to create intricate structures efficiently. Moreover, the study of dienes extends beyond just their chemical properties. Understanding how these compounds behave under different conditions can lead to advancements in materials science. For example, the polymerization of dienes is a critical process in the production of various plastics and elastomers. By manipulating the polymerization process, chemists can tailor the properties of the resulting materials, such as flexibility, strength, and thermal stability. In conclusion, dienes play a vital role in organic chemistry and material science. Their unique structures and reactivity make them essential components in the development of new materials and pharmaceuticals. As research continues to explore the potential of dienes, we can expect to see innovative applications that will benefit various industries. The study of dienes not only enhances our understanding of fundamental chemical principles but also opens doors to new technological advancements.

在有机化学的世界中，理解化合物的结构和反应性对于新材料和药物的开发至关重要。化学家们经常研究的一类重要化合物是二烯，它们是含有两个双键的烃。这些化合物可以在许多天然产物和合成材料中找到，因此它们成为了一个重要的研究领域。最简单的二烯的例子是丁二烯，这是一种具有两个双键的四碳分子。丁二烯不仅是合成橡胶生产中的关键基础材料，还作为各种化学品合成中的宝贵中间体。 二烯可以根据其结构进行分类。最常见的类型是共轭二烯，它们具有交替的单键和双键，以及孤立的二烯，其中双键由多个单键分隔。共轭二烯由于电子在双键之间的离域化而表现出独特的性质。这种离域化允许在某些化学反应中具有更大的稳定性和反应性，例如亲电加成。 二烯的一个迷人方面是它们能够发生Diels-Alder反应，这是一种形成六元环的强大方法。在该反应中，共轭二烯与一种称为二烯亲电体的物质（通常是烯烃或炔烃）反应，生成环己烯衍生物。这一反应在合成复杂有机分子时被广泛使用，包括天然产物和药物。Diels-Alder反应突显了二烯在有机合成中的重要性，因为它使化学家能够高效地创建复杂的结构。 此外，二烯的研究不仅限于其化学性质。了解这些化合物在不同条件下的行为可以推动材料科学的进步。例如，二烯的聚合是生产各种塑料和弹性体的关键过程。通过操纵聚合过程，化学家可以定制所得到材料的性质，如灵活性、强度和热稳定性。 总之，二烯在有机化学和材料科学中扮演着至关重要的角色。它们独特的结构和反应性使它们成为新材料和药物开发的重要组成部分。随着研究继续探索二烯的潜力，我们可以期待看到对各个行业有益的创新应用。对二烯的研究不仅增强了我们对基本化学原理的理解，也为新的技术进步打开了大门。