acetal

简明释义

英[ˈæsɪˌtæl]美[æsəˌtæl]

n. 乙缩醛

英英释义

单词用法

同义词

反义词

例句

1.The reaction of phenol, xylene—formaldehyde resin with boric acid gets an acetal resin.

苯酚、二甲苯缩甲醛树脂及硼酸反应生成缩醛树脂。

2.The yield of benzaldehyde glycol acetal was above 87.7% with zinc methanesulfonate as catalyst.

当以甲基磺酸锌为催化剂时，苯甲醛缩乙二醇的收率可达87.7%。

3.Synthesis of benzaldehyde ethylene glycol acetal under microwave irradiation catalyzed by sulfate;

用无水硫酸铜作催化剂，在微波辐射下催化合成苯甲醛乙二醇缩醛。

4.Among the more important are nylon, acetal resins, polycarbonate resins, and ABS resins.

较重要的有尼龙、缩醛树脂、聚碳酸酯树脂和ABS树脂。

5.Under these conditions, the yield of butyraldehyde glycol acetal is 71.1%.

在此反应条件下，丁醛乙二醇缩醛的收率可达71.1%。

6.Various aromatic diacids and various divinyl ether compounds are heated to react in organic solvent to obtain novel ester acetal polymers.

各种芳香二酸和各种二乙烯基醚化合物在有机溶剂存在下加热反应得到新型的酯缩醛聚合物。

7.OBJECTIVE To synthesize 4-chlorobutanal acetal by improved method.

目的改进4-氯丁醛缩醛的合成方法。

8.In organic chemistry, an acetal is often used as a protecting group for carbonyl compounds.

在有机化学中，缩醛通常用作羰基化合物的保护基团。

9.The reaction between an aldehyde and an alcohol produces an acetal.

醛和醇之间的反应生成了一个缩醛。

10.The stability of the acetal makes it useful in various industrial applications.

缩醛的稳定性使其在各种工业应用中非常有用。

11.When heated with water, an acetal can hydrolyze back to the original aldehyde and alcohol.

当与水加热时，缩醛可以水解回原来的醛和醇。

12.Chemists often synthesize acetals to create more complex molecules.

化学家们经常合成缩醛以创建更复杂的分子。

作文

In the field of organic chemistry, various compounds play crucial roles in different reactions and processes. One such compound is acetal, which is an important functional group derived from aldehydes. The formation of acetal occurs when an aldehyde reacts with an alcohol in the presence of an acid catalyst. This reaction is significant because it allows chemists to protect aldehyde functionalities during synthetic transformations. Understanding the properties and applications of acetal can greatly enhance one's knowledge of organic synthesis.The structure of acetal consists of a carbon atom bonded to two alkoxy groups (–O–R) and one hydrogen atom. This unique structure gives acetal its distinct chemical properties. For instance, acetal can be hydrolyzed back into the original aldehyde and alcohol under acidic conditions. This reversible reaction is particularly useful in synthetic chemistry, where protecting groups are often necessary to prevent unwanted reactions from occurring.One of the most common uses of acetal is in the protection of aldehydes during multi-step synthesis. When synthesizing complex molecules, chemists often need to manipulate various functional groups without affecting others. By converting an aldehyde into an acetal, the aldehyde's reactivity is significantly reduced, allowing for further reactions to take place without interference. Once the desired transformations are complete, the acetal can be easily removed to regenerate the original aldehyde.Moreover, acetal compounds are also found in various natural products and pharmaceuticals. Their stability and ability to form cyclic structures make them valuable in drug design. For example, certain acetals have been shown to exhibit biological activity, making them potential candidates for developing new therapeutic agents. Researchers continue to explore the diverse applications of acetal in medicinal chemistry, as they provide a pathway to creating more effective and targeted treatments.In addition to their role in synthesis and drug development, acetals are also used in the production of polymers and resins. These materials often require specific chemical properties that acetals can provide. For instance, polyacetals are a class of polymers derived from acetal monomers, which are known for their high strength and durability. These polymers are commonly used in engineering applications, such as gears and bearings, due to their excellent mechanical properties.In conclusion, acetal is a vital compound in organic chemistry with numerous applications in synthesis, drug development, and materials science. Its ability to protect aldehyde groups and its presence in biologically active compounds highlight its significance in the field. As research continues to advance, the understanding and utilization of acetal will undoubtedly expand, leading to innovative solutions in various scientific domains. Therefore, gaining a comprehensive understanding of acetal and its properties is essential for anyone interested in the realm of chemistry, whether in academia or industry.

在有机化学领域，各种化合物在不同反应和过程中发挥着至关重要的作用。一个这样的化合物是醛缩醇，它是由醛类衍生而来的重要功能团。醛缩醇的形成发生在醛与醇在酸催化剂的存在下反应时。这一反应之所以重要，是因为它使化学家能够在合成转化过程中保护醛的功能。理解醛缩醇的性质和应用可以大大增强人们对有机合成的知识。醛缩醇的结构由一个碳原子与两个醚基（–O–R）和一个氢原子相连组成。这一独特的结构赋予了醛缩醇其独特的化学性质。例如，醛缩醇可以在酸性条件下水解回原来的醛和醇。这一可逆反应在合成化学中尤其有用，因为保护基团通常是必要的，以防止不必要的反应发生。醛缩醇最常见的用途之一是在多步合成中保护醛。在合成复杂分子时，化学家常常需要操作各种功能团而不影响其他功能团。通过将醛转化为醛缩醇，醛的反应性显著降低，从而允许进一步的反应在没有干扰的情况下进行。一旦所需的转化完成，醛缩醇可以很容易地去除，以再生原始的醛。此外，醛缩醇化合物也存在于各种天然产物和药物中。它们的稳定性和形成环状结构的能力使它们在药物设计中具有价值。例如，某些醛缩醇已被证明具有生物活性，使它们成为开发新治疗剂的潜在候选者。研究人员继续探索醛缩醇在药物化学中的多样应用，因为它们提供了创造更有效和有针对性的治疗方法的途径。除了在合成和药物开发中的作用外，醛缩醇还用于聚合物和树脂的生产。这些材料通常需要特定的化学性质，而醛缩醇可以提供。例如，聚醛缩醇是一类源自醛缩醇单体的聚合物，以其高强度和耐用性而闻名。这些聚合物通常用于工程应用，如齿轮和轴承，因其优异的机械性能。总之，醛缩醇是有机化学中一种重要的化合物，在合成、药物开发和材料科学中具有许多应用。它保护醛基团的能力以及它在生物活性化合物中的存在突显了它在该领域的重要性。随着研究的不断推进，对醛缩醇的理解和利用无疑会扩大，导致在各个科学领域的创新解决方案。因此，全面了解醛缩醇及其性质对于任何对化学领域感兴趣的人来说都是至关重要的，无论是在学术界还是工业界。