Ethyl Acetate → 3,5-Dichloro-4-(2,2,2-trifluoroethoxy)aniline

関与物質

反応手順

To a solution of 1,3-dichloro-5-nitro-2-(2,2,2-trifluoroethoxy)benzene (1.90 g, 6.55 mmol) in MeOH (20 mL) and 12 N HCl (20 mL) at rt, SnCl2 (3.72 g, 19.66 mmol) was slowly added to it and then the reaction mixture was stirred overnight at rt. To the reaction mixture was slowly added 3N NaOH to pH=10 and then extracted with EA. The combined organic layers were washed with brine, dried over anhydrous Na2SO4, and concentrated under reduced pressure. The residue was purified by column chromatography over silica gel eluted with PE:EA (6:1) to provide 3,5-dichloro-4-(2,2,2-trifluoroethoxy)aniline (1.60 g, yield 94%) as pale yellow oil.

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