Application of 79456-30-7 ,Some common heterocyclic compound, 79456-30-7, molecular formula is C6H4BrF3N2, its traditional synthetic route has been very mature, but the traditional synthetic route has various shortcomings, such as complicated route, low yield, poor purity, etc., below Introduce a new synthetic route.
Production Example 59-2 40 g of 3-bromo-5-trifluoromethyl-pyridin-2-ylamine, 2.2 g of copper (II) acetylacetone, 6.6 g of acetylacetone, 59 g cf cesium carbonate, and 105 mL of NMP were added to an autoclave reactor, and 25 mL of a 28% ammonia water solution was added thereto under ice-cooling. After sealing the reactor, the temperature was elevated to 110C and the mixture was heated and stirred for 12 hours. After ice-cooling to room temperature, the reaction mixture was diluted with water and was subjected to extraction using ethyl acetate. A combined organic layer was dried using sodium sulfate, and then, was condensed under reduced pressure. The residue was subjected to silicagel column chromatography to obtain 15 g of 5-trifluoromethyl-pyridine-2,3-diamine. 5-trifluoromethyl-pyridine-2,3-diamine 1H-NMR (CDC13) delta: 7.93 (1H, d), 7.04 (1H, d), 4.71 (2H, brs), 3.46 (2H, brs).
These compound has a wide range of applications. It is believed that with the continuous development of the source of the synthetic route,79456-30-7, its application will become more common.
Reference:
Patent; Sumitomo Chemical Company, Limited; SUZUKI, Tatsuya; IWATA, Atsushi; NOKURA, Yoshihiko; EP2865266; (2015); A1;,
Pyridine – Wikipedia,
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