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cy211

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[交流] 【求助】丹酰二胺的合成!!!!!--拜求各位大哥

这是我的合成反应步骤,我想请教大家的是后处理的每一步的目的,在水层和有几层都有什么物质!小弟原来是搞物化的,有机合成是在是基础太差了!多谢大家帮忙讲解!

(1)A solution of dansyl chloride (3.67 g, 13.6 mmol) in CH3CN (360 mL) was added at 0°C to ethylene diamine (9.1 mL, 136 mmol) with stirring.
(2)The mixture was then allowed to stir at room temperature for 3 h.
(3)Unreacted dansyl chloride was removed by acidification (pH = 4) and extraction with diethyl ether.
(4)The aqueous layer was basified with aqueous NaOH and extracted with CHCl3.
(5)The extract was dried over Na2SO4concentrated, and dried in vacuo to provide 2.9 g (73%) of 1 as a solid:
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