Water → (6S,8S)-6-(2,3-difluorophenyl)-3-(2,2,2-trifluoroethyl)-5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-8-amine

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Reaction Steps

To a solution of tert-butyl [(6S,8S)-6-(2,3-difluorophenyl)-3-(2,2,2-trifluoroethyl)-5,6,7,8-tetrahydroimidazo[1,2-a]pyridin-8-yl]carbamate (59.0 mg, 0.137 mmol) in dichloromethane (1.37 mL) was added trifluoroacetic acid (105 μL, 1.37 mmol), and the mixture was stirred 1 h. Saturated aqueous sodium bicarbonate was added. Water was added, and the mixture was extracted with ethyl acetate (3×). The combined organic extracts were washed with brine, dried over magnesium sulfate, filtered and concentrated. Purification by reverse phase chromatography (C-18, 95% water/acetonitrile 30% water/acetonitrile with 0.1% trifluoroacetic acid) gave the title compound (23 mg). MS 332.3 (M+1).

Provenance & Evidence