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1.This paper discussed three methods of producting vinyl etherspreparation from acetylene,dehydrohalogenation and acetals.

1.论述了烯基醚类合物三种主要制备方法法、脱卤氢法和缩醛热分解法。

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2.A novel family of ester acetal molecular glass materials has been created by the reaction between monocarboxylic acid and divinyl ethers.

2.通过一元羧酸和二烯基醚反应,我们得到了一种新颖酯缩醛结构分子玻璃。

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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.

3.巴豆醛先氢加成,再二醇缩醛得到3-代丁醛缩二醇,收率80.8%。

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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.

4.对苯甲醛1,3-丁二醇在钒磷氧催剂作用下缩醛反应进行了研究,考察了醇醛比、反应时间、催剂用量、带水剂种类和体积等因素对苯甲醛1,3-丁二醇缩醛收率影响。

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kipper, kippered, kipping, KIPS, kipuka, kir, kirby-grip, Kirghiz, kirghizia, kirghizian,

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科学60秒-科学美国人 2020年6月合

1.The acetal linker readily cleaves in the presence of acid.

连接剂遇酸很容易裂解。

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活大爆炸(视频版) 第3季

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

存在纯净的 聚乙烯醇树脂里了。

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Kirkbyidae, Kirkcudbrightshire, kirkifier, kirkman, Kirk-sesion, kirksite, Kirksyl, Kirkuk, Kirlian, Kirman,

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3G, 401(K), a,
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