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. 5909-24-0, name is Ethyl 4-chloro-2-(methylthio)pyrimidine-5-carboxylate. This compound has unique chemical properties. The synthetic route is as follows. Formula: C8H9ClN2O2S
In THF (150 mL) was suspended 3-chloro-4-methoxybenzylamine hydrochloride salt (16.0 g, 76.9 mmol). The suspension was cooled in an ice bath, and triethylamine (19.4 g, 192.3 mmol) was added dropwisely. The reaction mixture was stirred at ambient temperature for 15 min, then was added ethyl 4-chloro-2-thiomethyl-5-pyrimidine carboxylate (14.9 g, 64.1 mmol). The reaction mixture was stirred at ambient temperature overnight. TLC was used to monitor the reaction. After the completion of the reaction, the solvent was removed by rotary evaporation. Acetic ether (500 mL) and water (200 mL) were added. The organic phase was separated, washed with hydrochloric acid (1N), saturated aqueous solution of sodium bicarbonate and brine, dried over sodium sulfate and filtrated. The filtrate was concentrated under reduced pressure. The solvent was removed by rotary evaporation to give oil. Methanol (100 mL) was added to precipitate a large amount of white solid. The mixture was filtrated and the solid was dried in vacuum to give ethyl 4-((3-chloro-4-methoxybenzyl)amine)-2-thiomethyl-5-pyrimidine carboxylate (21 g, 74.2 % yield).
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Reference:
Patent; Xuanzhu Pharma Co., Ltd.; WU, Frank; WANG, Aichen; EP2886540; (2015); A1;,
Pyrimidine | C4H4N2 – PubChem,
Pyrimidine – Wikipedia