aldol

简明释义

英[ˈældəɒl]美[ˈældoʊl]

n. 丁间醇醛

英英释义

单词用法

同义词

反义词

例句

1.Respectively using barium hydroxide and a basic anion exchanger as a catalyst, 2, 2-bis (hydroxymethyl) butyraldehyde is prepared from the Aldol condensation of butyraldehyde with formaldehyde.

在碱性催化剂的存在下，甲醛和丁醛经羟醛缩合反应合成2,2—二羟甲基丁醛。

2.Respectively using barium hydroxide and a basic anion exchanger as a catalyst, 2, 2-bis (hydroxymethyl) butyraldehyde is prepared from the Aldol condensation of butyraldehyde with formaldehyde.

在碱性催化剂的存在下，甲醛和丁醛经羟醛缩合反应合成2,2—二羟甲基丁醛。

3.Some problems about the intersection condensation of aldol in the present textbook of organic Chemical Experiment are pointed out. Mean while some improved are presented.

本文指出了现行有机化学实验教材中的交叉羟醛缩合反应存在的不足，并提出改进措施。

4.Especially it introduces the parameter of the cross aldol condensation and side-reaction controlling, the midterm products separation, and catalyzed hydrogenation.

重点研究了交叉缩合及副反应的控制、中间产物脱水及催化加氢的有关参数。

5.It was formerly derived by fermentation of carbohydrates but is now made synthetically by aldol condensation of acetaldehyde or by oxidation of petroleum gases.

以前它是由碳水化合物发酵得到，现在由乙醛醛醇缩合或石油气体氧化的合成方法制得。

6.Amyl cinnamaldehyde was synthesized from benzaldehyde and n-heptanal by aldol condensation with catalyst potassium hydroxide in solvent ethylene glycol.

以苯甲醛和正庚醛为原料，乙二醇为溶剂，在氢氧化钾催化作用下羟醛缩合合成甲位戊基桂醛。

7.The side-reactions were studied primarily in this paper, and the process of cross-aldol condensation were analyzed initially in kinetics.

对缩合过程中发生副反应的机理进行了探讨，同时也对交叉缩合反应过程的动力学作了初探。

8.The direct aldol reactions catalyzed by organocatalyst derived from 2-amino-2 '-hydroxy-1, 1' -binaphthyl were studied.

研究了2 -氨基- 2' -羟基- 1,1 ' -联萘衍生的有机小分子催化剂催化的直接羟醛缩合反应。

9.Proline is believed to catalyse the aldol reaction through a hydrogen-bonded intermediate.

人们普遍认为，脯氨酸通过形成单氢键相连接的中介物来催化醛醇缩合反应。

10.In organic chemistry, the reaction between an aldehyde and a ketone can lead to the formation of an aldol 醛醇.

在有机化学中，醛和酮之间的反应可以导致形成一个aldol 醛醇。

11.The aldol 醛醇 condensation is a key step in synthesizing larger organic molecules.

aldol 醛醇缩合是合成更大有机分子的关键步骤。

12.Researchers are studying aldol 醛醇 reactions to develop new pharmaceutical compounds.

研究人员正在研究aldol 醛醇反应，以开发新的药物化合物。

13.The formation of an aldol 醛醇 is often catalyzed by a base.

一个aldol 醛醇的形成通常由碱催化。

14.In the laboratory, we performed an aldol 醛醇 reaction using acetaldehyde.

在实验室中，我们使用乙醛进行了aldol 醛醇反应。

作文

The world of organic chemistry is filled with fascinating reactions and compounds, one of which is the aldol reaction. This reaction plays a crucial role in the formation of carbon-carbon bonds, which are fundamental to building larger and more complex molecules. The term aldol itself comes from the combination of two functional groups: aldehyde and alcohol. This combination reflects the nature of the molecules involved in the reaction, where an aldehyde reacts with a ketone or another aldehyde in the presence of a base to form a β-hydroxy aldehyde or ketone. Understanding the aldol reaction is essential for any aspiring chemist as it serves as a foundation for many synthetic pathways. This reaction can be categorized into two main types: the direct aldol reaction and the crossed aldol reaction. In the direct aldol reaction, two identical aldehydes or ketones react together, whereas in the crossed aldol reaction, different aldehydes or ketones are used. This versatility allows chemists to create a wide array of products, which can be further manipulated to form even more complex structures. One of the most significant aspects of the aldol reaction is its ability to generate stereocenters, leading to the formation of chiral molecules. Chirality is a critical concept in chemistry, particularly in the pharmaceutical industry, where the orientation of molecules can drastically affect their biological activity. The ability to control the stereochemistry of aldol products opens up new avenues for drug development and synthesis. Moreover, the aldol reaction can be performed under mild conditions, making it an attractive option for green chemistry. It typically does not require harsh reagents or extreme temperatures, which aligns with the principles of sustainability in chemical processes. This characteristic has led to increased interest in using aldol reactions in various industrial applications, including the production of fine chemicals and pharmaceuticals. In conclusion, the aldol reaction is a cornerstone of organic synthesis that exemplifies the beauty and complexity of chemical reactions. Its ability to form carbon-carbon bonds, generate chiral centers, and operate under mild conditions makes it an invaluable tool in the chemist's arsenal. As we continue to explore the vast landscape of organic chemistry, the aldol reaction will undoubtedly remain a pivotal area of study, inspiring future generations of chemists to innovate and discover new possibilities in the realm of molecular construction.

有机化学的世界充满了迷人的反应和化合物，其中一个就是aldol反应。这个反应在形成碳-碳键方面发挥着至关重要的作用，而碳-碳键是构建更大和更复杂分子的基础。术语aldol本身来自两个官能团的结合：醛和醇。这种组合反映了参与反应的分子的性质，其中醛与酮或另一个醛在碱的存在下反应，形成β-羟基醛或酮。 理解aldol反应对于任何有抱负的化学家来说都是必不可少的，因为它为许多合成途径奠定了基础。这个反应可以分为两种主要类型：直接aldol反应和交叉aldol反应。在直接aldol反应中，两个相同的醛或酮反应在一起，而在交叉aldol反应中，使用不同的醛或酮。这种多样性使化学家能够创造出各种各样的产品，这些产品可以进一步被操作以形成更复杂的结构。 aldol反应的一个重要方面是其生成立体中心的能力，从而导致手性分子的形成。手性是化学中的一个关键概念，特别是在制药行业中，分子的取向可以极大地影响其生物活性。控制aldol产物的立体化学的能力为药物开发和合成开辟了新的途径。 此外，aldol反应可以在温和的条件下进行，使其成为绿色化学的一个有吸引力的选择。它通常不需要苛刻的试剂或极端的温度，这与化学过程可持续性的原则相一致。这一特性导致人们越来越关注在各种工业应用中使用aldol反应，包括精细化学品和药品的生产。 总之，aldol反应是有机合成的基石，体现了化学反应的美丽和复杂性。它形成碳-碳键、生成手性中心并在温和条件下操作的能力使其成为化学家的宝贵工具。随着我们继续探索有机化学的广阔领域，aldol反应无疑将继续成为一个关键的研究领域，激励未来几代化学家在分子构建的领域中创新和发现新的可能性。