anhydrides

简明释义

英[ˈænhaɪdraɪdz]美[ˈænhaɪdraɪdz]

[化学]酐（anhydride 的名词复数）

英英释义

单词用法

同义词

反义词

例句

1.METHODS The CCK-4 peptides were condensed from N-protected Trp, met, Asp and C-protected Phe by Mixture anhydrides method, resulting in total yield of 38.5%.

方法以N -保护的色氨酸、甲硫氨酸、天门冬氨酸和C -保护的苯丙氨酸为原料，采用混合酸酐法合成了CCK四肽，总收率38.5%。

2.The analysis results revealed that good separability of alicyclic anhydrides could obtain on OV-17 column.

分析结果表明，这四种脂环族酸酐均能在OV - 17毛细管色谱柱上获得很好的峰形和分离效果。

3.It was studied on the curing activity of DCPD phenol epoxy resin with anhydrides and amines.

研究了DCPD酚环氧树脂与酸酐及胺类固化剂的固化反应活性。

4.The RG Dipeptides were condensated from N-protected Arg and C-protected Gly by mixed anhydrides method. Then Asp and RG Dipeptides were synthesized RGD Tripeptides in liquid phase.

由N-保护的精氨酸、C-保护的甘氨酸采用混合酸酐法缩合成RG二肽，再与天冬氨酸在液相中合成RGD三肽。

5.Dicyclopentadiene dioxide was hardly cured by amines or acid anhydrides alone, but can be well cured by acid anhydrides mixed with alcohols.

二氧化双环戊二烯难于被胺或单独的酸酐所固化，但能很好的被酸酐与醇所固化。

6.The reaction with dicarboxylic acid anhydrides results in an acid addition product, which alters the ratio of free basic to free acidic groups in gelatin, so as to lower the isoelectric point.

而二元酸酐酰化反应可改变氨基、羧基的比例，从而降低了明胶的等电点。

7.To create a more reactive compound, chemists sometimes convert carboxylic acids into their corresponding anhydrides (酸酐).

为了创造更具反应性的化合物，化学家有时将羧酸转化为其相应的anhydrides（酸酐）。

8.The presence of anhydrides (酸酐) in the reaction mixture can significantly alter the properties of the final product.

反应混合物中存在的anhydrides（酸酐）可以显著改变最终产品的性质。

9.In organic chemistry, the reaction of acids with alcohols often produces esters and water, where the presence of anhydrides (酸酐) can enhance the yield.

在有机化学中，酸与醇的反应通常会产生酯和水，其中存在的anhydrides（酸酐）可以提高产率。

10.Phthalic anhydrides (邻苯二甲酸酐) are important intermediates in the production of dyes and plastics.

邻苯二甲酸anhydrides（邻苯二甲酸酐）是染料和塑料生产中的重要中间体。

11.The synthesis of acetic anhydride involves heating acetic acid with a dehydrating agent, resulting in the formation of anhydrides (酸酐).

醋酸酸酐的合成涉及将醋酸与脱水剂加热，从而形成anhydrides（酸酐）。

作文

Anhydrides are fascinating chemical compounds that play a significant role in various fields, including chemistry, biology, and industry. The term 'anhydride' refers to a substance derived from another compound by the removal of water (H2O). In simple terms, it can be understood as a compound that lacks water. An example of this is the formation of acetic anhydride from acetic acid. This process involves the elimination of a water molecule, resulting in a more reactive compound. The versatility of anhydrides (无水物) allows them to participate in numerous chemical reactions, making them essential in synthetic chemistry.One of the most common types of anhydrides (无水物) is the acid anhydride, which is formed by the dehydration of an acid. For instance, when two molecules of acetic acid lose a water molecule, they form acetic anhydride. This reaction highlights the importance of anhydrides (无水物) in organic synthesis, as they are often used to create esters and other derivatives. Furthermore, anhydrides (无水物) can also react with alcohols to produce esters, which are widely used in the production of fragrances, flavorings, and plastics.In addition to their role in organic synthesis, anhydrides (无水物) have significant applications in the pharmaceutical industry. Many drugs are synthesized using anhydrides (无水物) as intermediates. The ability of these compounds to activate certain functional groups makes them invaluable for creating complex molecules required for therapeutic purposes. For instance, the synthesis of aspirin involves the use of acetic anhydride, which reacts with salicylic acid to form the desired product. This demonstrates how crucial anhydrides (无水物) are in the development of medications that enhance human health.Moreover, anhydrides (无水物) are also utilized in the production of polymers. Polymeric materials, such as polyesters and polyamides, often involve anhydrides (无水物) in their synthesis. The incorporation of anhydrides (无水物) into polymerization processes can lead to improved properties, such as increased strength and thermal stability. This makes them valuable in industries ranging from construction to packaging, where durable materials are essential.Despite their benefits, working with anhydrides (无水物) requires caution due to their reactive nature. Many anhydrides (无水物) can cause irritation upon contact with skin or respiratory systems, necessitating proper safety measures in laboratories and industrial settings. Understanding the properties and behaviors of these compounds is crucial for chemists and engineers to ensure safe handling and effective application.In conclusion, anhydrides (无水物) are vital components in the world of chemistry, with applications that span across various industries. Their ability to facilitate reactions and synthesize complex molecules underscores their importance in organic chemistry and pharmaceuticals. As research continues to evolve, the potential uses of anhydrides (无水物) may expand even further, leading to new innovations and advancements in science and technology. Thus, a comprehensive understanding of anhydrides (无水物) is essential for anyone involved in chemical research or application.

无水物是引人入胜的化学化合物，在化学、生物和工业等多个领域发挥着重要作用。‘无水物’这个术语指的是通过去除水（H2O）而从另一种化合物中衍生出的物质。简单来说，它可以理解为缺乏水的化合物。一个例子是从醋酸形成醋酸无水物。这个过程涉及到去除一个水分子，从而产生一个更具反应性的化合物。无水物的多功能性使它们能够参与众多化学反应，使它们在合成化学中必不可少。最常见的无水物类型之一是酸无水物，它是通过脱水反应形成的。例如，当两个醋酸分子失去一个水分子时，它们形成醋酸无水物。这个反应突显了无水物在有机合成中的重要性，因为它们通常用于创建酯和其他衍生物。此外，无水物也可以与醇反应生成酯，这些酯广泛用于香料、调味品和塑料的生产。除了在有机合成中的作用外，无水物在制药行业中也具有重要应用。许多药物的合成使用无水物作为中间体。这些化合物激活某些官能团的能力使它们在创造复杂分子方面变得不可或缺，这些分子是治疗目的所需的。例如，阿司匹林的合成涉及使用醋酸无水物，它与水杨酸反应生成所需的产品。这表明无水物在开发改善人类健康的药物中的重要性。此外，无水物还用于聚合物的生产。聚合材料，如聚酯和聚酰胺，通常在其合成中涉及无水物。将无水物纳入聚合过程可以改善材料的性质，例如增强强度和热稳定性。这使得它们在建筑和包装等行业中非常有价值，因为这些行业需要耐用材料。尽管有其好处，但处理无水物需要谨慎，因为它们的反应性特征。许多无水物在接触皮肤或呼吸系统时可能会引起刺激，因此在实验室和工业环境中需要采取适当的安全措施。了解这些化合物的性质和行为对于化学家和工程师确保安全处理和有效应用至关重要。总之，无水物是化学世界中至关重要的组成部分，其应用跨越多个行业。它们促进反应和合成复杂分子的能力凸显了它们在有机化学和制药中的重要性。随着研究的不断发展，无水物的潜在用途可能会进一步扩展，导致科学和技术的新创新和进步。因此，对于任何参与化学研究或应用的人来说，全面理解无水物至关重要。