N-bromobutanimide → HCID 18969776, compound

Participants

Reaction Steps

To a solution of cyclobutenone from step 2 (530 mg) in benzene was added NBS (350 mg). The mixture was heated to reflux for 1.5 hr in the presence of a sun lamp, cooled to r.t. and the solvent evaporated. The resulting residue was purified by flash chromatography (silica gel; hexane/EtOAc (70:30)) to provide the title compound as a white solid, m.p. 212° C.

Provenance & Evidence