Adding a certain compound to certain chemical reactions, such as: 1256810-58-8, 6-Bromo-3-chloro-2-methoxypyridine, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound, Recommanded Product: 6-Bromo-3-chloro-2-methoxypyridine, blongs to pyridine-derivatives compound. Recommanded Product: 6-Bromo-3-chloro-2-methoxypyridine
Reference Example 4-15 (5R)-5-[(5-Chloro-6-methoxypyridin-2-yl)ethynyl]-1-(2,4-dimethoxybenzyl)pyrrolidin-2-one (5R)-1-(2,4-Dimethoxybenzyl)-5-ethynylpyrrolidin-2-one (600 mg, synthesized according to Tetrahedron Asymmetry, 1995, 239 using dimethyl (R)-glutamate hydrochloride as a raw material) in acetonitrile (6 mL) was added to a solution of 6-bromo-3-chloro-2-methoxypyridine (667 mg), bis(triphenylphosphine)palladium(II) dichloride (81 mg) and copper iodide (22 mg) in triethylamine (12 mL) in a nitrogen gas stream at 40 C. over 30 minutes. The mixture was stirred at room temperature for four hours. The reaction solution was poured into water, followed by extraction with ethyl acetate. The organic layer was washed with brine, dried over anhydrous magnesium sulfate and filtered. The solvent was then evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane:ethyl acetate=1:1?0:1) to give the title compound as a colorless oil (452 mg, 52%). 1H NMR (300 MHz, CDCl3) delta ppm 2.12-2.48 (m, 3H), 2.53-2.70 (m, 1H), 3.79 (s, 3H), 3.80 (s, 3H), 4.04 (s, 3H), 4.26 (d, J=15 Hz, 1H), 4.37-4.46 (m, 1H), 4.89 (d, J=15 Hz, 1H), 6.38-6.49 (m, 2H), 6.94 (d, J=7.8 Hz, 1H), 7.18-7.25 (m, 1H), 7.57 (d, J=7.8 Hz, 1H).
At the same time, in my other blogs, there are other synthetic methods of this type of compound,1256810-58-8, 6-Bromo-3-chloro-2-methoxypyridine, and friends who are interested can also refer to it.
Reference:
Patent; TAISHO PHARMACEUTICAL CO., LTD; NISSAN CHEMICAL INDUSTRIES, LTD.; US2011/237791; (2011); A1;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem