Researchers who often do experiments know that organic synthesis is a process of preparing more complex target molecules from simple raw materials through one or more chemical reactions. Generally, it requires fewer steps, and cheap raw materials. 349-65-5, name is 2-Methoxy-5-(trifluoromethyl)aniline, A new synthetic method of this compound is introduced below., Product Details of 349-65-5
The 1-(5-bromopyridin-2-yl)-3-(2-methoxy-5-trifluoromethylphenyl)urea can be prepared in the following way: A solution of 11.05 g (57.80 mmol) of 2-methoxy-5-trifluoromethylaniline in 100 ml of anhydrous tetrahydrofuran is added, at 0 C. over 3 minutes, to a solution of 6 g (20.23 mmol) of triphosgene in 500 ml of anhydrous tetrahydrofuran. 16.50 ml (116.80 mmol) of triethylamine are added at 0 C. The reaction is stirred at 0 C. for 10 minutes and then at ambient temperature for 1 h 45 min. A solution of 10 g (57.80 mmol) of 2-amino-5-bromopyridine in 100 ml of anhydrous tetrahydrofuran is then added at ambient temperature. The reaction is stirred at ambient temperature for 20 h. The mixture is filtered over sintered glass and the white solid obtained is washed with tetrahydrofuran and a small amount of ethyl acetate. The filtrate is evaporated to dryness under reduced pressure and a pale yellow solid is obtained. The latter is triturated with ethyl acetate and water and then, after filtration over sintered glass, 12.04 g of 1-(5-bromopyridin-2-yl)-3-(2-methoxy-5-trifluoromethylphenyl)urea are obtained in the form of a white solid. EI: m/z=389 (M+), m/z=191 (C8H8NOF3+), m/z=172 (C5H5N2Br+) base peak.
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; AVENTIS PHARMA S.A.; US2007/259910; (2007); A1;,
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