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单词 acetal
释义

acetal /'æsɪtæl//'æsə,tæl/

英汉-汉英词典
n. [化]乙缩醛
词组 | 习惯用语
您要查找的是不是:
  • acetylene n. 乙炔,电石气
  • acetate n. 醋酸盐;醋酸纤维素及其制成的产品
  • cetacean adj. 鲸类的;鲸鱼的 n. 鲸鱼;鲸类动物
  • placental adj. 胎盘的;胎座的 n. 有胎盘哺乳动物
acetals n. 缩醛;醛缩二醇;缩醛树脂(acetal的复数形式)
polyvinyl acetal [高分子] 聚乙烯醇缩醛
dimethyl acetal 二甲缩醛
acetal resin [树脂] 缩醛树脂;聚甲醛树脂
acetal polymer 缩醛缩聚物
acetal copolymer 共聚甲醛
aldehyde acetal 缩醛
acetal phosphatide 缩醛磷脂
acetal fibre 缩醛纤维
viscose acetal fibre 黏胶纤维

网络短语:
buy Propynal diethyl acetal 印度买家
phenylacetaldehyde glycol acetal 苯乙醛缩乙二醇
polyvinyl acetals 聚乙烯醇缩醛类
3-butanediol acetal 丁二醇缩醛
acetal plastic 缩醛塑料;聚甲醛塑料;缩醛塑料聚甲醛塑料;缩醛份子化合物塑料
urushiol acetal 漆酚缩醛
acetal formation 缩醛形成
英语例句库
  1. This paper discussed three methods of producting vinyl etherspreparation from acetylene,dehydrohalogenation and acetals.
    论述了乙烯基醚类化合物的三种主要制备方法乙炔法、脱卤化氢法和缩醛热分解法。
  2. A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.
    通过一元羧酸和二乙烯基醚的反应,我们得到了一种新颖的酯缩醛结构分子玻璃。
  3. Bromobutyraldehyde ethylene acetal was synthesized from crotonaldehyde by addition with hydrogen bromide and then acetalation with ethylene glycol with an overall yield of 80.
    巴豆醛先与溴化氢加成,再与乙二醇缩醛化得到3-溴代丁醛缩乙二醇,收率80.8%。
  4. The effects of reactant ratio, reaction time, catalyst amount,the species and amount of deaquation reagent on the yield of benzaldehyde 1,3-butanediol acetal were investigated.
    对苯甲醛与1,3-丁二醇在钒磷氧催化剂作用下的缩醛化反应进行了研究,考察了醇醛比、反应时间、催化剂用量、带水剂种类和体积等因素对苯甲醛1,3-丁二醇缩醛收率的影响。

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原声例句
科学60秒-科学美国人 2020年6月合集

The acetal linker readily cleaves in the presence of acid.

缩醛连接剂遇酸很容易裂解。

生活大爆炸(视频版) 第3季

I preserved in a one percent solution of polyvinyl acetal resin.

我把它保存在纯净的 聚乙烯醇缩醛树脂里了。

中文百科

缩醛

缩醛通式

缩醛Acetal)是一类同一碳上连有两个烷氧基和一个氢的有机化合物。缩醛可由半缩醛继续与醇反应得到,而半缩醛可以由醛和醇反应得到。

缩醛在酸性水溶液中是不稳定的,但对碱和氧化剂是稳定的,因此可以用作羰基的保护基。

缩醛(酮)生成的一般过程:

英语百科

Acetal 缩醛

Structure of a generic ketal
Acetalisation Mechanism

An acetal is a functional group with the following connectivity R2C(OR')2, where both R' groups are organic fragments. The central carbon atom has four bonds to it, and is therefore saturated and has tetrahedral geometry. The two R'O groups may be equivalent to each other or not. The two R groups can be equivalent to each other (a "symmetric acetal") or not (a "mixed acetal"), and one or both can even be hydrogen atoms rather than organic fragments. Acetals are formed from and convertible to carbonyl compounds (aldehydes or ketones R2C=O). The term ketal is sometimes used to identify structures associated with ketones rather than aldehydes and, historically, the term acetal was used specifically for the aldehyde cases.

近义、反义、联想词
近义词
n.
organic compound

联想词
ester酯;esters酯类;copolymer共聚物;polyethylene聚乙烯;thermoplastic热后可塑性的;resin树脂;monomer单体;methyl甲基;ethyl乙烷基;epoxy环氧的;amine胺;
英英词典
acetal n.
  1. any organic compound formed by adding alcohol molecules to aldehyde molecules
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更新时间:2025/6/18 19:21:43