Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 52311-50-9, name is 2-Chloro-4-ethoxypyridine. This compound has unique chemical properties. The synthetic route is as follows. Quality Control of 2-Chloro-4-ethoxypyridine
A solution of [(2R,5R)-5-hydroxy-2-methylpiperidin-l-yl][2-(2H- 1,2,3 -triazol-2- yl)phenyl]methanone (0.025 g, 0.087 mmol) in DMF (1 mL) was treated with sodium hydride (3.1 mg, 0.131 mmol). After stirring ~20 minutes, 2-chloro-4-ethoxypyridine (16.5 g, 0.105 mmol) was added and the reaction was heated to 50 C overnight. Additional sodium hydride (1.6 mg, 0.065 mmol) was added, and the reaction was heated to 80 C for 4 h, then quenched with saturated aqueous ammonium chloride and diluted with water. The mixture was extracted 3x with ethyl acetate and the combined organic fractions were washed with brine, dried over sodium sulfate, filtered, and concentrated. The residue was purified by silica gel chromatography (0-3% methanol in dichloromethane) to provide the title compound. FIRMS m/z (Mu+Eta) 408.2016 found, 408.2030 required.
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Reference:
Patent; MERCK SHARP & DOHME CORP.; KUDUK, Scott, D.; SKUDLAREK, Jason, W.; WO2014/137883; (2014); A1;,
Pyridine – Wikipedia,
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