Reference of 458-52-6, In the next few decades, the world population will flourish. As the population grows rapidly and people all over the world use more and more resources, all industries must consider their environmental impact. 458-52-6, name is 2-Fluoro-4-methoxyaniline belongs to ethers-buliding-blocks compound, it is a common compound, a new synthetic route is introduced below.
EXAMPLE 13 Benzamide, 2-amino-4,6-dimethoxy-N-(2-fluoro-4-methoxyphenyl) To a mixture of 200 mg (1.42 mmol)of 4-amino-3-fluoroanisole and 1M sodium bis(trimethylsilyl)amide (4.39 mmol) in THF solution at room temperature under nitrogen atmosphere, 320 mg (1.42 mmol) of the isatoic anhydride prepared in Example 5, was added followed by the addition of 2 mL of N,N-dimethylacetamide. The suspension was heated at 90° C. for 4 hours. After completion of the reaction, as monitored by HPLC, the mixture was cooled to room temperature, diluted with EtOAc and 1N HCl, and the resulting layers were separated. The aqueous layer was extracted with EtOAc twice, and the combined organic extracts were washed with water, saturated NaHCO3, brine, dried over Na2SO4 and concentrated. The residue was dissolved in CH2Cl2 and chromatographed on silica using 30percent EtOAc in hexane as eluent. A total of 220 mg (48percent) of a yellow solid was obtained. C16H17FN2O4=320 g/mol; ESI-LC/MS (M+H)+=321.1; 1H NMR (400 MHz, CDCl3): delta10.0 (1H, s), 8.26 (1H, t, J=8.8 Hz), 6.70 (2H, m), 6.42 (2H, broad), 5.85 (1H, d, J=2.6 Hz), 5.82 (1H, d, J=2.6 Hz), 3.94 (3H, s), 3.79 (6H, s).
The synthetic route of 2-Fluoro-4-methoxyaniline has been constantly updated, and we look forward to future research findings.
Reference:
Patent; Gungor, Timur; Corte, James R.; US2003/220227; (2003); A1;,
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