100487-82-9

基本信息
2-(4-溴-2-硝苯基)乙酸甲酯
2-(4-溴-2-硝基苯基)乙酸甲酯
Methyl4-bromo-2-nitrophenylacetate98%
4-Bromo-2-nitrobenzeneacetic acid methyl ester
(4-BroMo-2-nitro-phenyl)-acetic acid Methyl ester
Benzeneacetic acid, 4-broMo-2-nitro-, Methyl ester
4-Bromo-2-nitrophenylacetic acid methyl ester, 5-Bromo-2-(2-methoxy-2-oxoethyl)nitrobenzene
物理化学性质
制备方法

100487-81-8

100487-82-9
一般步骤:向搅拌的1,3-二甲基2-(4-溴-2-硝基苯基)丙二酸酯(20 g,60.2 mmol)的二甲基亚砜(DMSO,200 mL)溶液中加入氯化锂(5.11 g,2当量),随后加入水(1.1 mL,1当量)。将反应混合物在100°C下搅拌2天,然后在室温下继续搅拌4天。反应完成后,将混合物倒入水中,并用乙酸乙酯(2×200 mL)萃取。合并有机相,用饱和盐水(2×200 mL)洗涤,无水硫酸钠干燥。减压浓缩后,残余物通过Combi-Flash柱色谱(洗脱剂:乙酸乙酯/己烷)纯化,得到2-(4-溴-2-硝基苯基)乙酸甲酯(12 g,73%收率),为浅黄色固体。1H NMR (400 MHz, DMSO-d6) δ 8.30 (d, J = 2.1 Hz, 1H), 7.98 (dd, J = 8.2, 2.1 Hz, 1H), 7.56 (d, J = 8.2 Hz, 1H), 4.08 (s, 2H), 3.63 (s, 3H)。LCMS-ESI (POS), m/z, [M + H]+: 实测值274.0和276.0。
参考文献:
[1] Synthesis, 1993, # 1, p. 51 - 53
[2] Journal of the American Chemical Society, 2013, vol. 135, # 2, p. 620 - 623
[3] Patent: WO2009/158011, 2009, A1. Location in patent: Page/Page column 59-60
[4] Patent: WO2009/85040, 2009, A1. Location in patent: Page/Page column 25-26
[5] Patent: US6350747, 2002, B1. Location in patent: Page column 48