Hydrochloric Acid → HCID 136360062, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of (R)-3-[4-(3-methoxy-azetidin-1-yl)-phenyl]-1-(2-methyl-pyridin-4-yl)-3-o-tolyl-propan-1-one oxime (example 270, 31 mg) in 1,4-dioxane (2 mL) was added at room temperature hydrochloric acid 4 M in 1,4-dioxane (187 μL). The reaction mixture was heated at 50° C. and stirred for 4 hours. A saturated solution of sodium hydrogencarbonate (2 mL) was added to neutralized the crude solution followed by a saturated aq. ammonium chloride solution. Ethyl acetate was added, the phases were separated and the inorganic one was extracted with ethyl acetate (2×). The combined organic layers were washed with brine, dried over sodium sulfate, filtered and concentrated in vacuo. The crude product was purified by flash chromatography on silica gel (25% to 100% ethyl acetate in n-heptane) to yield the title compound as a light yellow foam (89%), MS (ESI+): m/z=452.3 ([M+H]+).

Provenance & Evidence