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Bromobutyraldehyde ethylene acetal was synthesized from crotonaldehyde by addition with hydrogen bromide and then acetalation with ethylene glycol with an overall yield of 80.

巴豆醛先溴化氢,二醇缩醛化得到3-溴代丁醛缩二醇,收率80.8%。

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For instance, partial charges occur in hydrogen bromide because the electrons are more attracted to the bromide than they are to the hydrogen.

例如，部分电荷出现，电子更容易被物吸引， 而不是被吸引。

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