Hydrochloric Acid → HCID 68380158, compound

Participants

Reaction Steps

To a solution of tert-butyl {(2S)-1-[4-fluoro-2-(trifluoromethyl)phenoxy]propan-2-yl}carbamate (C6) (1.87 g, 5.54 mmol) in methanol (10 mL) was added a solution of hydrogen chloride (4 N in 1,4-dioxane, 5 mL). After 4 hours, the reaction mixture was concentrated in vacuo. The resulting residue was taken up in dichloromethane and washed with saturated aqueous sodium bicarbonate solution and water. The organic layer was dried over magnesium sulfate, filtered and concentrated in vacuo. Purification via silica gel chromatography (Gradient: 0 to 20% methanol in ethyl acetate) afforded the title compound as a yellow liquid. Yield: 785 mg, 3.31 mmol, 60%. LCMS m/z 238.1 (M+1). 1H NMR (400 MHz, CDCl3) δ 1.19 (d, J=6.5 Hz, 3H), 3.35-3.44 (m, 1H), 3.74 (dd, J=8.4, 7.4 Hz, 1H), 3.94 (dd, J=8.5, 4.0 Hz, 1H), 6.93 (dd, J=9.1, 4.2 Hz, 1H), 7.18 (br ddd, J=9, 8, 3 Hz, 1H), 7.30 (dd, J=8.4, 3.1 Hz, 1H).

Provenance & Evidence