07/9/2021 News Some tips on 13534-89-9

Statistics shows that 13534-89-9 is playing an increasingly important role. we look forward to future research findings about 2,3-Dibromopyridine.

Synthetic Route of 13534-89-9, With the rapid development and complex challenges of chemical substances, the synthesis of new drugs is usually one of the most effective ways to increase yield.13534-89-9, name is 2,3-Dibromopyridine, molecular formula is C5H3Br2N, molecular weight is 236.892, as common compound, the synthetic route is as follows.

To a solution of 2,3-dibromopyridine (5 g, 21.11 mmol) in toluene (50 mL), t-BuLi (1.3 M, 19.50 mL) was dropwise added at -78C under N2. The resulting mixture was stirred at -78C for 2 hours. DMF (1.9 g, 25.33 mmol) was added dropwise at -78C. The mixture was stirred at -78C for another 2 hours. The solution was quenched with NH4CI (aq. 1 mL) at -78C, and the mixture was concentrated under vacuum. The residue was purified by column chromatography on silica gel (Petroleum ether /ethyl acetate=10/l to 1/1) to afford 3-bromopicolinaldehyde.

Statistics shows that 13534-89-9 is playing an increasingly important role. we look forward to future research findings about 2,3-Dibromopyridine.

Reference:
Patent; H. LUNDBECK A/S; KEHLER, Jan; JUHL, Karsten; MARIGO, Mauro; VITAL, Paulo, Jorge, Vieira; JESSING, Mikkel; LANGGARD, Morten; RASMUSSEN, Lars, Kyhn; CLEMENTSON, Carl, Martin, Sebastian; (275 pag.)WO2019/115566; (2019); A1;,
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