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. 52718-95-3, name is Methyl 2-bromonicotinate. A new synthetic method of this compound is introduced below., Application In Synthesis of Methyl 2-bromonicotinate
Step 1) Methyl 2-[(4-Hydroxymethyl)phenyl]-3-pyridinecarboxylate To a stirred solution of methyl 2-bromo-3-pyridinecarboxylate (3.45 g, 14.39 mmol) and 4-(trimethylstannyl)benzyl alcohol (3.90 g, 14.39 mmol), prepared as described in Step 1 of Example 3, in DMF (25 mL) was added bis(acetonitrile)palladium dichloride (0.19 g, 0.72 mmol) and CuI (0.27 g, 1.44 mmol). After 18 h, bis(triphenylphosphine)palladium dichloride (0.20 g, 0.28 mmol) and CuI (0.11 g, 0.57 mmol) were added and stirring was continued for 2 days at room temperature. The mixture was concentrated, taken up in water, and extracted with EtOAc. The combined extracts were washed with brine, dried, and concentrated. Purification by flash chromatography (50% EtOAc/hexane) gave 277 mg (8%) of product as a yellow oil. 1 H NMR (CDCl3) delta 3.69 (s, 3H), 4.69 (s, 2H), 7.35 (m, 1H), 7.38 (d, J=8.2 Hz, 2H), 7.49 (d, J=8.2 Hz, 2H), 8.08 (dd, J=7.9, 1.8 Hz, 1H), 8.75 (m, 1H).
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Reference:
Patent; American Home Products Corporation; US5283242; (1994); A;,
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