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ChemicalBook CAS DataBase List METHYL 2-FLUORO-4-HYDROXYBENZOATE
197507-22-5

METHYL 2-FLUORO-4-HYDROXYBENZOATE synthesis

6synthesis methods
-

Yield: 94%

Reaction Conditions:

with sulfuric acid at 90; for 16 h;

Steps:

10
Reference Example 10; methyl 2-fluoro-4-hydroxybenzoate A solution of 2-fluoro-4-hydroxybenzoic acid (50.0 g) and concentrated sulfuric acid (10 mL) in methanol (700 mL) was stirred at 90°C for 16 hr with heating. The reaction solution was concentrated, and the resulting colorless crystals were washed with water, and dried to give the title compound (51 g, yield 94%) as colorless crystals. 1H NMR (300 MHz, DMSO-d6) 5: 3.79 (3 H, s), 6.61 - 6.72 (2 H, m), 7. 73 - 7.79 (1 H, m), 10.80 (1 H, br).

References:

Takeda Pharmaceutical Company Limited EP2392573, 2011, A1 Location in patent:Page/Page column 39

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