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blue3585

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[求助] 2―氨基乙醇乙酰化

请教各位,2―氨基乙醇乙酰化如何只乙酰化羟基

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creoluphus

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2-Acetyloxyethylamine (6). A 10.0 g portion of 2-hydroxyethylamine hydrochloride was placed in a 500 mL flask, followed by addition of 7.5 mL of acetic acid and 30 mL of acetyl chloride. The reactants were stirred, and occurrence of reaction was evident by evolution of heat. The reaction mixture was cooled by immersing the flask in ice-water, as needed. The reaction was stirred at room temperature overnight, and the excess acetyl chloride and acetic acid were removed under vacuum. The product was crystallized from absolute ethanol, and crystals were collected and dried with heat (70-80 °C) to collect pure 6 (12.35 g, yield 86.25%). 1H NMR (300 MHz, DMSO-d6) δ 8.34 (s, 3H, NH3+), 4.20 (t, J = 5.2 Hz, 2H, CH2), 3.03 (t, J = 5.3 Hz, 2H, CH2), 2.04 (s, 3H, CH3).
2楼2016-11-30 16:29:26
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blue3585

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引用回帖:
2楼: Originally posted by creoluphus at 2016-11-30 16:29:26
2-Acetyloxyethylamine (6). A 10.0 g portion of 2-hydroxyethylamine hydrochloride was placed in a 500 mL flask, followed by addition of 7.5 mL of acetic acid and 30 mL of acetyl chloride. The reactant ...

谢谢,我不是做实验要用,而是一道简答题,请问知道答案吗

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3楼2016-11-30 17:17:15
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