Ozone → tert-Butyl 4-(1-hydroxyl-2-oxoethyl)-2-methyl-3-oxopiperidine-1-carboxylate

Participants

Reaction Steps

Ozone gas was bubbled into a solution of 0.450 g (1.30 mmol) of tert-butyl 4-[(2E)-1-hydroxyl-3-phenylprop-2-enyl]-2-methyl-3-oxopiperidine-1-carboxylate (Step D) in 10 mL of methanol and 10 mL of dichloromethane at −78° C. until the solution turned blue. The reaction was quenched with dimethyl sulfide, warmed to ambient temperature, and stirred for 1 h. The mixture was concentrated in vacuo and purified by flash chromatography on a Biotage® system (silica gel, eluting with 20% ethyl acetate/hexane to 60% ethyl acetate/hexane), affording the title compound.

Provenance & Evidence