Synthetic Route of 1268830-91-6, The chemical industry reduces the impact on the environment during synthesis 1268830-91-6, name is Methyl 3-amino-6-fluoro-2-methoxybenzoate, I believe this compound will play a more active role in future production and life.
A 250 mL round bottom flask was charged with a solution of methyl 3- amino-6-fluoro-2-methoxybenzoate (3.656 g, 18.36 mmol) in methylene chloride (100 mL). To this reaction mixture was added a solution of 4-dimethylaminopyridine (113 mg, 0.925 mmol), pyridine (7.45 mL, 92.1 mmol) and propane- 1-sulfonyl chloride (8.25 mL, 73.6 mmol) in methylene chloride (10 mL) over a course of five minutes. The reaction mixture was stirred at room temperature for 14 hours. After removing the organic solvent under reduced pressure, 100 mL saturated aqueous sodium bicarbonate was added followed by stirring for 10 minutes. The aqueous mixture was extracted with 200 mL ethyl acetate (2x). The combined organic layers were washed with brine, dried over magnesium sulfate, filtered and concentrated. The crude product was purified using flash chromatography, eluting with 0-30% ethyl acetate/heptanes to give methyl 6-fluoro-2-methoxy-3-(propylsulfonamido)benzoate as an oil (4.914 g, 85%). 1H NMR (400 MHz, DMSOd6) delta = 9.27 (s, IH), 7.48 (dd, J=9.1, 6.1, IH), 7.09 (t, J=9.0, IH), 3.89 (s, 3H), 3.85 – 3.74 (m, 3H), 3.29 (s, 15H).
In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles, Methyl 3-amino-6-fluoro-2-methoxybenzoate, other downstream synthetic routes, hurry up and to see.
Reference:
Patent; ARRAY BIOPHARMA INC.; GENENTECH, INC.; ALIAGAS, Ignacio; GRADL, Stefan; GUNZNER, Janet; MATHIEU, Simon; RUDOLPH, Joachim; WEN, Zhaoyang; WENGLOWSKY, Steven Mark; WO2011/25947; (2011); A1;,
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