METHYL 2-BROMO-4,5-DIFLUOROBENZOATE synthesis
- Product Name:METHYL 2-BROMO-4,5-DIFLUOROBENZOATE
- CAS Number:878207-28-4
- Molecular formula:C8H5BrF2O2
- Molecular Weight:251.02
64695-84-7
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18107-18-1
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878207-28-4
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Yield: 94%
Reaction Conditions:
in methanol;dichloromethane at 20; for 1 h;
Steps:
67 Methyl 2-bromo-4,5-difluorobenzoate
To a mixture of 2-bromo-4,5-difluorobenzoic acid (1 g, 4.22 mmol) in dichloromethane (10 mL) and MeOH (1 mL) was added trimethylsilyl)diazomethane (2.110 mL, 4.22 mmol) and the reaction was stirred at rt for 1 h. It was then concentrated to obtain methyl 2-bromo-4,5-difluorobenzoate (1 g, 3.98 mmol, 94% yield) as an oil. 1H NMR (400 MHz, CDCl3) δ 7.76 (dd, J=10.5, 8.3 Hz, 1H), 7.57-7.49 (m, 1H), 3.96 (s, 3H).
References:
BRISTOL-MYERS SQUIBB COMPANY;Naidu, B. Narasimhulu;Walker, Michael A.;Sorenson, Margaret E.;Patel, Manoj;Zheng, Zhizhen Barbara;Kadow, John F.;Zheng, Bin;Eastgate, Martin D.;Chen, Ke;Gonzalez-Bobes, Francisco US2015/232481, 2015, A1 Location in patent:Paragraph 0417
67-56-1
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64695-84-7
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878207-28-4
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74-88-4
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878207-28-4
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878207-28-4
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