| 查看: 424 | 回复: 2 | ||
[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 @lifeliuyan 发自小木虫Android客户端 |
» 猜你喜欢
垃圾破二本职称评审标准
已经有18人回复
职称评审没过,求安慰
已经有53人回复
毕业后当辅导员了,天天各种学生超烦
已经有5人回复
26申博自荐
已经有3人回复
A期刊撤稿
已经有4人回复
EST投稿状态问题
已经有7人回复
creoluphus
新虫 (小有名气)
- 应助: 12 (小学生)
- 金币: 1959.6
- 红花: 1
- 帖子: 209
- 在线: 111.3小时
- 虫号: 841775
- 注册: 2009-09-06
- 专业: 药物化学
| 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
3楼2016-11-30 17:17:15













回复此楼