Application of 139399-67-0, As we all know, there are many different methods for the synthesis of a compound, and people can choose the synthesis method that suits their own laboratory according to the actual situation. 139399-67-0 name is 3-Bromoquinolin-8-amine, This compound is widely used in many fields, so it is necessary to find a new synthetic route. The downstream synthesis method of this compound is introduced below.
8-Amino-3-bromoquinoline (4) (0.3 g, 1.3 mmol) was dissolved in 10 mL of 70% sulfuric acid and placed in a Q-Tube (Sigma Aldrich). The tube was sealed and heated with stirring at 22000 for 3 days. After cooling to ambient temperature, the reaction solution was brought to pH 8 by addition of NH4OH (16 M), followed by extraction with ethyl acetate (4 x 25 mL). The organic phases were combined, dried over Na2504, filtered, and evaporated todryness. The crude product was purified by column chromatography on silica gel (7 g) using3:1 dichloromethane/hexane as the eluent. Fractions containing the product were combinedand evaporated to dryness to give 5 as a white solid 0.184 g (34% yield, mp 99-101 00, litmp 111.5-1 12.5 00) 1H NMR (400 MHz, ODd3) O 8.77 (1H, d, J= 2.0 Hz), 8.32 (1H, d, J=2.0 Hz), 7.99 (1H, 5), 7.48 (1H, t, J= 8.0 Hz), 7.18 (1H, dd, J= 23.2 Hz, J= 9.6 Hz). LCMSfound 225.90, [M+2H].
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 3-Bromoquinolin-8-amine, and friends who are interested can also refer to it.