39658-41-8

基本信息
6-胺基烟酸乙酯
6-氨基烟酸乙酯
2-氨基吡啶-5-羧酸乙酯
6-AMINO-NICOTINIC ACID ETHYL ESTER
ETHYL 2-AMINO-5-PYRIDINECARBOXYLATE
ETHYL 2-AMINOPYRIDINE-5-CARBOXYLATE
ETHYL 6-AMINONICOTINATE
Ethyl 6-aminonicotinate 98%
ETHYL 6-AMINOPYRIDINE-3-CARBOXYLATE
Ethyl 6-aminonicotinate ,98%
物理化学性质
制备方法

3167-49-5

64-17-5

39658-41-8
在60℃、惰性气氛及持续搅拌条件下,将亚硫酰氯(1.6 mL,21.68 mmol)缓慢滴加至6-氨基烟酸(1.0 g,7.23 mmol)的乙醇(20 mL)悬浮液中。随后,将反应混合物回流18小时。反应完成后,通过减压蒸馏去除挥发性组分。残余物用乙酸乙酯溶解,有机相依次用饱和碳酸氢钠水溶液、去离子水及盐水洗涤,经无水硫酸钠干燥后,浓缩得到目标产物2-氨基-5-吡啶甲酸乙酯(1.15 g,收率95.8%),其光谱纯度满足后续反应要求,无需进一步纯化。产物结构经1H NMR确认(DMSO-d6, 300 MHz, ppm):δ 8.49(d, J = 1.8 Hz, 1H),7.83-7.79(dd, J = 8.7, 2.7 Hz, 1H),6.83(bs, 2H),6.44(d, J = 8.7 Hz, 1H),4.26-4.18(q, J = 6.9 Hz, 2H),1.29-1.25(t, J = 6.9 Hz, 3H)。
参考文献:
[1] Bioorganic and Medicinal Chemistry, 2004, vol. 12, # 5, p. 1151 - 1175
[2] Patent: WO2007/86080, 2007, A2. Location in patent: Page/Page column 37
[3] Patent: WO2010/3048, 2010, A1. Location in patent: Page/Page column 110
[4] Patent: WO2015/105779, 2015, A1. Location in patent: Page/Page column 11; 12
[5] Patent: US2016/333005, 2016, A1. Location in patent: Paragraph 0042-0043