Water → HCID 15829116, compound

Participants

Reaction Steps

To a solution of methylbicyclo[2.2.1]heptan-2-one (26 g, 0.209 mol) and 2,6-di-tert-butyl-4-methyl-pyridine (64 g, 0.315 mol) in DCM (300 mL) was added dropwise trifluoromethanesulfonic anhydride (88 g, 0.315 mol) in DCM (50 mL) at 0° C. The reaction mixture was stirred at room temperature for 24 h. The mixture was poured into water, and extracted with DCM (2×100 mL). The combined extracts were washed with a 10% hydrochloric acid solution (3×100 mL), saturated aqueous sodium bicarbonate solution (50 mL), brine (50 mL) and dried over sodium sulfate. Concentration under reduced pressure gave the crude product, which was purified by silica gel column chromatography (100% n-pentane) to give the desired product (7.6 g, 0.03 mol, 14%). 1H NMR (400 MHz, CDCl3): δ ppm 5.15 (brs, 1H), 4.89 (brs, 1H), 2.51-2.39 (m, 2H), 2.26-2.17 (m, 2H), 2.12-2.05 (m, 2H), 1.99-1.85 (m, 2H), 1.53-1.50 (m, 1H).

Provenance & Evidence