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. 31108-57-3, name is 1H-Pyrazole-4-carbonitrile, A new synthetic method of this compound is introduced below., SDS of cas: 31108-57-3
To a stirred solution of ethyl 2-((2-chloroethyl) amino)-2-phenylacetate (0.10 g, 0.413 mmol) in DMF (1 ml) was added K2C03 (0.114 g, 0.827 mmol) at 25 C. After stirring for 15 minutes, 1 /7-pyrazolc-4-carhonitrilc (0.046g, 0.496 mmol) was added at 25 C. The reaction mixture was heated at 60 C for 3 hours. Then the reaction mixture was poured into ice water (15 ml) and the product was extracted with ethyl acetate (2 x 30 ml). The combined organic layers were washed with brine (20 ml), dried over anhydrous sodium sulphate and concentrated under reduced pressure. The residue was purified by silica gel chromatography to afford the title compound (0.050 g, 40%). LCMS: m/z = 299.76 [M+l].
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; CONSTELLATION PHARMACEUTICALS, INC.; WILSON, Jonathan, E.; BRUCELLE, Francois; LEVELL, Julian, R.; (153 pag.)WO2019/161162; (2019); A1;,
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