Analyzing the synthesis route of 4-Fluoro-3-methoxyaniline

The chemical industry reduces the impact on the environment during synthesis 4-Fluoro-3-methoxyaniline. I believe this compound will play a more active role in future production and life.

Synthetic Route of 64465-53-8, Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 64465-53-8, name is 4-Fluoro-3-methoxyaniline, This compound has unique chemical properties. The synthetic route is as follows.

Example 1; 4-Bromo- 1 -fluoro-2-methoxybenzene; Aqueous hydrobromic acid (48%, 2.41 mL) was added to 4-fluoro-3-methoxyaniline (1.0 g, 7.1 mmol) in water (10 mL) and the resulting mixture was cooled to 0 0C in an ice bath. A solution of sodium nitrite (538 mg, 7.8 mmol) in water (5 mL) was added drop wise during 15 min while maintaining the temperature between 0-5 0C. The resulting diazoniumsalt solution was added to a suspension of copper (I) bromide (1.12 g, 7.8 mmol) in water (5 mL) which had been pre-heated to 75 C. The mixture was shaken thoroughly, aqueous hydrobromic acid (48%, 12.07 mL) was added and the solution was stirred at ambient temperature for 16 h. Excess water was added and the product was extracted with diethyl ether and the combined organic extracts were washed with aqueous saturated sodium chloride, dried over magnesium sulfate, filtered and the solvent was evaporated in vacuo to give 1.02 g (70% yield) of the title compound: 1H-NMR (DMSO-afo): delta 7.36 (dd, J = 7.78, 2.26 Hz, 1 H), 7.23 – 7.17 (m, 1 H), 7.14 – 7.09 (m, 1 H), 3.86 (s, 3 H); MS (EI) m/z 204, 206 [M+«]

The chemical industry reduces the impact on the environment during synthesis 4-Fluoro-3-methoxyaniline. I believe this compound will play a more active role in future production and life.

Reference:
Patent; ASTRAZENECA AB; ASTEX THERAPEUTICS LTD; WO2007/145568; (2007); A1;,
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