With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.100367-39-3, name is 4-Bromo-2-methoxypyridine, molecular formula is C6H6BrNO, molecular weight is 188.0219, as common compound, the synthetic route is as follows.Recommanded Product: 4-Bromo-2-methoxypyridine
To a resealable reaction pressure vessel under nitrogen was added 1.0 equiv of 55 (266 mg, 0.665 mmol), Pd(PPh3)4 (38 mg, 0.033 mmol, 5 mol %), K2C03 (184 mg, 1.33 mmol, 2.0 equiv), 2-methoxy-4-bromopyridine (137 mg, 0.732 mmol, 1.1 equiv), dioxane (20 mL) and water (2 mL). The mixture was degassed through bubbling nitrogen for 40 min and heated at 110 C overnight. After cooling to room temperature, water (20 mL) was added and the organic product was extracted using EtOAc (3 x 30 mL). The combined organic layers were dried over MgS04, filtered through Celite and the solvent removed in vacuo. The residual was purified by flash chromatography to provide 160 mg (63%) of 58 as colorless oil. 1H NMR (300 MHz, CDC13) delta 1.42 (br s, 9H), 1.49-1.63 (m, 2H), 1.86-1.98 (m, 3H), 2.00-2.07 (m, 1H), 2.96-3.01 (m, 1H), 3.92 (s, 3H), 4.30 (s, 1H), 4.42 (br s, 1H), 6.81 (dd, J = 5.7, 2.4 Hz, 1H), 7.25 (d, J= 2.2 Hz, 1H), 8.22 (t, J= 1.9 Hz, 1H), 8.53 (d, J= 5.7 Hz, 1H), 8.56 (d, J= 2.0 Hz, 1H), 9.00 (d, J = 2.0 Hz, 1H); 13C NMR (CDC13) delta 28.3 (3 C), 28.8, 29.9, 40.2, 45.8, 55.9, 61.8, 79.7, 107.2, 108.6, 132.9, 134.7, 140.9, 146.2, 149.1, 151.1, 155.0, 156.7 166.5; MS (ESI) m/z 382.7 (M+H)+.
At the same time, in my other blogs, there are other synthetic methods of this type of compound,100367-39-3, 4-Bromo-2-methoxypyridine, and friends who are interested can also refer to it.
Reference:
Patent; RESEARCH TRIANGLE INSTITUTE; CARROLL, Frank Ivy; ONDACHI, Pauline Wanjiku; WO2012/24615; (2012); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem