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1,3-Benzenedicarboxylic acid, 2-broMo-, 1,3-diMethyl ester synthesis
- Product Name:1,3-Benzenedicarboxylic acid, 2-broMo-, 1,3-diMethyl ester
- CAS Number:39622-80-5
- Molecular formula:C10H9BrO4
- Molecular Weight:273.08
![2-bromobenzene-1,3-dicarboxylic acid](/CAS/GIF/22433-91-6.gif)
22433-91-6
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![Iodomethane](/CAS/GIF/74-88-4.gif)
74-88-4
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![1,3-Benzenedicarboxylic acid, 2-broMo-, 1,3-diMethyl ester](/CAS/20150408/GIF/39622-80-5.gif)
39622-80-5
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$52.00/250mg
Yield: 94%
Reaction Conditions:
with potassium carbonate in N,N-dimethyl-formamide at 20; for 24 h;Inert atmosphere;
Steps:
17 Synthesis of Dimethyl 2-bromobenzene-l,3-dicarboxylate (26)
[00211] To a stirring solution of 2-bromobenzene-l,3-dicarboxylic acid (25.15 g, 102.64 mmol) in anhydrous DMF (250 mL) at ambient temperature under nitrogen was added anhydrous K2CO3 (31.5 g, 227.92 mmol), followed by iodomethane (32.376 g, 14.2 mL, 228.10 mmol). The reaction mixture was stirred at this temperature for 24 h. The reaction mixture was poured into brine (750 mL), and the product was extracted with ethyl acetate (3 x 250 mL). The combined organic layers were washed with brine (450 mL), dried over anhydrous sodium sulfate and concentrated to afford dimethyl 2- bromobenzene-l,3-dicarboxylate (28.45 g, 94%) as an amber oil. The product was carried to the next step without further purification. NMR (250 MHz, DMSO-dr,) d 7.91 - 7.74 (m, 2H), 7.70 - 7.52 (m, 1H), 3.88 (s, 6H). ESI-MS m/z calc. 271.9684, found 273.4 (M+l)+; Retention time: 4.23 minutes (LC Method C).
References:
VERTEX PHARMACEUTICALS INCORPORATED;ABELA, Alexander Russell;ABRAHAM, Sunny;ANDERSON, Corey Don;ARUMUGAM, Vijayalaksmi;CHAU, Jaclyn;CLEMENS, Jeremy;CLEVELAND, Thomas;DWIGHT, Timothy A.;FRIEMAN, Bryan A.;HADIDA RUAH, Sara Sabina;ISHIHARA, Yoshihiro;KRENITSKY, Paul;MCCARTNEY, Jason;MELILLO, Vito;MILLER, Mark Thomas;SILINA, Alina;UY, Johnny;ZHOU, Jinglan WO2020/206080, 2020, A1 Location in patent:Paragraph 00211
![Methanol](/CAS/GIF/67-56-1.gif)
67-56-1
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![2-bromobenzene-1,3-dicarboxylic acid](/CAS/GIF/22433-91-6.gif)
22433-91-6
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![1,3-Benzenedicarboxylic acid, 2-broMo-, 1,3-diMethyl ester](/CAS/20150408/GIF/39622-80-5.gif)
39622-80-5
60 suppliers
$52.00/250mg
![Methanol](/CAS/GIF/67-56-1.gif)
67-56-1
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![1,3-Benzenedicarbonyl dichloride, 2-bromo-](/CAS/20210305/GIF/151603-30-4.gif)
151603-30-4
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![1,3-Benzenedicarboxylic acid, 2-broMo-, 1,3-diMethyl ester](/CAS/20150408/GIF/39622-80-5.gif)
39622-80-5
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![2-Bromo-m-xylene](/CAS/GIF/576-22-7.gif)
576-22-7
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![1,3-Benzenedicarboxylic acid, 2-broMo-, 1,3-diMethyl ester](/CAS/20150408/GIF/39622-80-5.gif)
39622-80-5
60 suppliers
$52.00/250mg
![2-AMINOISOPHTHALIC ACID](/CAS/GIF/39622-79-2.gif)
39622-79-2
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$5.00/250mg
![1,3-Benzenedicarboxylic acid, 2-broMo-, 1,3-diMethyl ester](/CAS/20150408/GIF/39622-80-5.gif)
39622-80-5
60 suppliers
$52.00/250mg