Each compound has different characteristics, and only by selecting the characteristics of the compound suitable for a specific situation can the compound be applied on a large scale. 6945-67-1, name is 2-Bromo-4-nitropyridine. This compound has unique chemical properties. The synthetic route is as follows. name: 2-Bromo-4-nitropyridine
[ STEP C] To a mixture of 234 (6g, 0. 029mol), [PDCL2] (Ph3) 2 (620mg, 3 mol%), Cul (338mg, 6 mol%) under an atmosphere of nitrogen was added diisopropylethylamine (100 mL). The resulting mixture was stirred at ambient temperature for several minutes before the introduction of TMS acetylene (6. 3ml, [1.] [5EQUIV).] The contents were then heated at [60C] for 24 hours. The solvent was removed under reduced pressure and the crude material filtered through silica gel column (hexanes: EtOAc 10: 1) to give 236 as a yellow solid, 4.9 gm [(76%).]
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Reference:
Patent; RIGEL PHARMACEUTICALS, INC.; WO2004/18463; (2004); A2;,
Pyridine – Wikipedia,
Pyridine | C5H5N – PubChem