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. 330786-09-9, name is Methyl 3,5-dichloropyrazine-2-carboxylate, A new synthetic method of this compound is introduced below., Product Details of 330786-09-9
Methyl 3,5-dichloropyrazine-2-carboxylate (5.0 g, 24.2 mmol) was dissolved in a 9: 1 mixture of dry tetrahydrofuran (242 mL) and methanol (27 mL). The mixture was cooled to 1.5-2 C with an ice/water bath and stirred at this temperature for 10 min. A 2 M solution of lithium borohydride in THF (13.3 mL, 26.6 mmol) was then added carefully keeping the temperature below 4-5 C. After addition, the reaction mixture was stirred for an additional 10-15 min at 0-4 C. Methanol (120 mL) was added to the flask and the mixture stirred for 15 min at rt. The reaction was slowly poured into a mixture of 1 M HC1 solution (100 mL) and ethyl acetate (200 mL). The resulting mixture was stirred at rt for 15 min. The aqueous layer was extracted with ethyl acetate (3 x 150 mL) and the combined organics washed with brine (2 x 100 mL), dried over anhydrous MgS04, filtered, and concentrated under reduced pressure. (3,5-Dichloropyrazin-2-yl)methanol (4.3 g, 99% yield) was obtained as a yellow oil after drying under high vacuum for 2 h. 1H-NMR (500 MHz, CDCI3) d 8.52 (s, 1H), 4.85 (s, 2H).
The basis of chemical reaction formula synthesis, the synthesis route is composed of some specific reactions and combined according to certain logical thinking. We look forward to the emergence of more reaction modes in the future.
Reference:
Patent; RELAY THERAPEUTICS, INC.; D.E. SHAW RESEARCH, LLC; TAYLOR, Alexander, M.; LESCARBEAU, Andre; KELLEY, Elizabeth, H.; SHORTSLEEVES, Kelley, C.; WALTERS, W., Patrick; MURCKO, Mark, Andrew; MCLEAN, Thomas, H.; GUNAYDIN, Hakan; GIORDANETTO, Fabrizio; THERRIEN, Eric; (607 pag.)WO2019/183367; (2019); A1;,
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