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

1.论述了乙类化合物三种主要制备方法乙炔法、脱卤化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.通过一元羧酸和二乙,们得到了一种新颖缩醛结构分子玻璃。

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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%。

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

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Heteromyenia, Heteromyidae, Heteromyinae, Heteromyota, Heteromys, Heteronema, Heteronemertea, Heteronemertini, heteronereis, Heteroneura,

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3G, 401(K), a,

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科学60秒-科学美国人 2020年6月合集

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

缩醛遇酸很容易裂解。

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活大爆炸(视频版) 3

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

把它保存在纯净的 聚乙烯醇缩醛树脂里了。

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Heterophyes, heterophyiasis, heterophyid, Heterophyidae, heterophyiesis, Heterophyinae, Heterophyllia, Heterophyllidae, heterophyllisine, Heterophyllium,

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3G, 401(K), a,
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