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. 524955-09-7, name is 3-Chloro-4-(pyridin-2-ylmethoxy)aniline. This compound has unique chemical properties. The synthetic route is as follows. Safety of 3-Chloro-4-(pyridin-2-ylmethoxy)aniline
To a 4-Chloro-5,8-dihydro-6H-9-thia-1,3,7-triaza-fluorene-7-carboxylic acid tert-butyl ester (3.08 g, 9.40 mmol, 1.05 equiv) in 40 mL of isopropyl alcohol solution was added 3-Chloro-4-(pyridin-2-ylmethoxy)phenylamine (2.10 g, 9.0 mmol, 1 equiv) at rt. 4 N HCl in dioxane (0.1 mL) was added to the reaction mixture to accelerate the reaction. The reaction mixture was heated at 80 C. for 16 h. The mixture was allowed to cool to rt then filtered and washed with IPA (50 mL). DCM (100 mL) and sat. sodium bicarbonate (100 mL) were added to the solid. The mixture was stirred at rt for 1 h before separated the layers. The organic layer was dried over sodium sulfate, filtered and concentrated in vacuo to yield 4.50 g of crude material. The crude material was purified by flash chromatography (50% THF/DCM) to yield a light yellow (3.60 g, 6.87 mmol, 76%) as product. 1H-NMR (DMSO-d6) delta 9.32 (broad s, 1H), 8.67 (d, J=4.0 Hz, 1H), 8.40 (s, 1H), 8.27 (s, 1H), 8.05 (t, 1H), 7.79 (d, J=2.7 Hz, 1H), 7.70 (d, J=8.0 Hz, 1H), 7.53 (t, 1H), 7.24 (d, J=8.9 Hz, 1H), 5.35 (s, 2H), 4.66 (s, 2H), 3.66 (t, 2H), 3.19 (t, 2H), 1.43 (s, 9H); LCMS RT=3.39 min, [M+H]+=524.0.
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Reference:
Patent; BAYER HEALTHCARE AG; US2010/298297; (2010); A1;,
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