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. 42521-09-5, name is Methyl 2,6-dichloroisonicotinate. A new synthetic method of this compound is introduced below., Application In Synthesis of Methyl 2,6-dichloroisonicotinate
Under inert atmosphere, a mixture of methyl 2,6-dichloropyridine-4-carboxylate (2,00 g), dimethylzinc (2N in toluene, 14.6 ml, 3.0 equiv.) and PdCI2(dppf)2 (400 mg, 0.05 equiv.) in dioxane (50 ml), was heated at 80C for 4Hrs. The reaction mixture was cooled by an ice bath, hydrolysed with water (100 ml) and filtered through a pad of celite. The pad was rinsed with water and EtAOc. The filtrate was extracted with EtOAc (250 ml). The organic layer was washed with brine (1 00 ml), dried over MgSO4 and concentrated. Purification by flash chromatography (MeOH in CH2Cl2, 0 to 2%) afforded compound 99 as an orange oil in 96% yield. 1H-NMR (400 MHz, DMSO): 2.51 (s, 6H, 2CH3); 3.88 (s, 3H, O-CH3); 7.51 (s, 2H, Ar). M/Z(M+H)+ = 166.1.
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Reference:
Patent; DOMAIN THERAPEUTICS; MAYER, Stanislas; SCHANN, Stephan; WO2013/174822; (2013); A1;,
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