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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.

巴豆先氢加成,乙二得到3-代丁乙二,收率80.8%。

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化学 Crash Course

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

例，电荷出现在化中，因为电子更容化物吸引， 而不是吸引。

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