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. 623585-74-0, name is Methyl 2,5-dichloroisonicotinate. A new synthetic method of this compound is introduced below., Quality Control of Methyl 2,5-dichloroisonicotinate
To a cold solution of methyl 2,5-dichloroisonicotinate (500 mg, 2.42 mmol) in THF (15 mL) was added N-Methyl-2-pyrrolidone (1.4 mL), iron(III)acetyl acetone (43 mg, 0.12 mmol) and methyl magnesium bromide (36 mg, 0.305 mmol) at 0C. The reaction mixture was stirred at 0C for 1 h and then at rt for 18 h. The reaction mixture was quenched with brine and was extracted with ethyl acetate. The organic layer was separated, dried, filtered and concentrated to afford 130 mg of the title product.1H NMR (300 MHz, DMSO d6): delta 8.46 (s, 1H), 7.74 (s,lH), 3.87 (s, 3H), 2.44 (s, 3H).
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Reference:
Patent; GLENMARK PHARMACEUTICALS S.A.; GHARAT, Laxmikant Atmaram; BANERJEE, Abhisek; KHAIRATKAR-JOSHI, Neelima; KATTIGE, Vidya Ganapati; WO2013/72825; (2013); A1;,
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