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单词 acetoacetate
释义

acetoacetate /ˌæsətəu'æsiteit/

英汉-汉英词典
n. 乙酰乙酸
词组 | 习惯用语
ethyl acetoacetate 乙酰乙酸乙酯
methyl acetoacetate 乙酰乙酸甲酯
英语例句库
  1. Nefedipine was synthesized with m-Nitrobenzaldehyde,ethyl acetoacetate,ammonium acetate.
    以间硝基苯甲醛,乙酰乙酸乙酯,氨化试剂为原料。
  2. Heptanone with purity being 98.5% was synthesized by ethyl acetoacetate.The yield is 58.9%,and its application in the related fields were discussed.
    用乙酰酯法合成了2-庚酮,总得率为58.9%,纯度为98.5%.介绍了2-庚酮在相关领域中的应用.
  3. Keto-enol tautomerizing of ethyl acetoacetate was studied by UV.It was conformed that the content of enol ethyl acetoacetate decreased with the increasing polarity of solvents.
    本文以紫外光谱为手段研究乙酰乙酸乙酯的酮-烯醇式互变异构现象;所得结果证实其烯醇式含量随溶剂极性的增加而减少。

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原声例句
Scishow 精选系列

One of those compounds is acetoacetate, which can break down further into acetone.

其中一种化合物是酰乙酸酯,它可以进一步分解成丙酮。

SciShow - Chemistry

One of those compounds is acetoacetate, which can break down further into -- you guessed it -- acetone.

其中一种化合物是乙酰乙酸,它可以进一步分解成——你猜对了——丙酮。

中文百科

乙酰乙酸 Acetoacetic acid

(重定向自Acetoacetate)

乙酰乙酸(IUPAC名:3-丁酮酸)化学式:C4H6O3,是最简单的β-酮酸,室温下为无色结晶。它有弱酸性,可以与水和醇混溶。与其他β-酮酸一样,乙酰乙酸不稳定,加热到100 °C时便迅速分解为丙酮和二氧化碳。乙酰乙酸酯比乙酰乙酸稳定得多,因此用途也比较广。

乙酰乙酸由乙酰乙酸乙酯水解得到。一般都是在0 °C时制备,而且现配先用。

乙酰乙酸在碱溶液中更加稳定。37 °C时,酸性溶液中的乙酰乙酸半衰期为140分钟,在碱性溶液中则为130小时。

乙酰乙酸是脂肪酸β氧化时,乙酰辅酶A的缩合产物,是酮体的三个组成之一。 脂肪酸代谢过度之后,糖尿病、饥饿、急性乙醇中毒等均会使乙酰乙酸的含量增高。可用于鉴别和监护糖尿病酮症酸中毒病人的诊断和治疗。

英语百科

Acetoacetic acid 乙酰乙酸

(重定向自Acetoacetate)
Pigment Yellow 16 is a typical dye containing the acetoacetyl group

Acetoacetic acid (also diacetic acid) is the organic compound with the formula CH3COCH2COOH. It is the simplest beta-keto acid group, and like other members of this class it is unstable. The methyl and ethyl esters, which are quite stable, are produced on a large scale industrially as precursors to dyes.

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更新时间:2025/6/20 3:15:13