Hydrochloric Acid → HCID 40788210, compound

Participants

Reaction Steps

Concentrated hydrochloric acid (1.00 ml, 12.0 mmol) and anhydrous tin dichloride (903 mg, 4.76 mmol) were sequentially added at 0° C. to a methanol (5 ml) solution of (S)-1-[2-nitro-4-(trifluoromethyl)phenyl]-2-methylpiperidine (275 mg, 0.953 mmol), obtained as described in [Referential Example 2-1]. The resulting mixture was warned to room temperature and stirred for 17 hours. A saturated solution of sodium hydrogen carbonate was added to the mixture, and the resulting mixture was extracted three times with ethyl acetate. The obtained organic layer was washed with a saturated sodium chloride solution, dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (50 g, hexane/ethyl acetate=12/1). Thus, (S)-2-(2-methyl-1-piperidinyl)-5-(trifluoromethyl)aniline (233 mg, 94.6%) was yielded as a colorless oily material.

Provenance & Evidence