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. 197376-47-9, name is Ethyl 6-Chloropyridine-3-acetate. A new synthetic method of this compound is introduced below., name: Ethyl 6-Chloropyridine-3-acetate
To a solution of ethyl (6-chloropyridin-3-yl)acetate (1.0 g) in N,N-dimethylformamide (20 mL) was added sodium hydride (60% in mineral oil, 0.40 g) under ice-cooling, and the mixture was stirred for 40 min. To the reaction mixture was added 1-bromo-2-(2-bromoethoxy)ethane (2.3 g), and the mixture was stirred at 0 C. for 3 hr. To the reaction mixture was added water, and the mixture was extracted with ethyl acetate. The obtained organic layer was washed with saturated brine, and dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (hexane/ethyl acetate) to give the title compound (0.82 g). (1596) MS(ESI+): [M+H]+ 270.1
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Reference:
Patent; TAKEDA PHARMACEUTICAL COMPANY LIMITED; Saitoh, Morihisa; Yogo, Takatoshi; Kamei, Taku; Tokunaga, Norihito; Ohba, Yusuke; Yukawa, Takafumi; (191 pag.)US2016/159773; (2016); A1;,
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