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. 882500-21-2, name is 5-Bromo-6-trifluoromethylpyridin-2-ylamine. This compound has unique chemical properties. The synthetic route is as follows. Computed Properties of C6H4BrF3N2
A mixture of 5-bromo-6-(trifluoromethyl)pyridin-2-amine (3.0 g, 12.3 mmol), Zn(CN)2 (0.81 g, 6.9 mmol), Pd2(dba)3 (0.57 g, 0.6 mmol), and Xantphos (0.72 g, 1.2 mmol) in DMA (12 mL) was placed in a sealed tube. The mixture was degassed with argon and stirred at 160C for 20h. The mixture was poured into water and extracted with EtOAc (2x). The combined organic layers were dried over magnesium sulfate and concentrated to dryness. The residue was purified by column chromatography on silica gel eluting with 3: 1 EtOAc/hexanes to afford 1.9 g of 6-amino-2-(trifluoromethyl)nicotinonitrile as a solid. lR NMR (400 MHz, CDC13) delta 7.74 (d, 1H), 6.67 (d, 1H).
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Reference:
Patent; ARAGON PHARMACEUTICALS, INC.; SMITH, Nicholas, D.; BONNEFOUS, Celine; JULIEN, Jackaline, D.; WO2011/103202; (2011); A2;,
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