Sulfuric Acid → HCID 86584274, compound

Participants

Reaction Steps

Sulfuric acid (1.15Sml) was added slowly to a solution of 4-(2-acetylsulfanyl-1-carboxy-ethyl)-piperidine-1-carboxylic acid benzyl ester (20.32 g) in dichloromethane (60 ml). The mixture was cooled in an acetone/dry ice bath and cooled isobutylene (60 ml) added. The mixture was transferred to a Parr high pressure apparatus and left to stir overnight then washed with water (30 ml), saturated sodium bicarbonate solution (30 ml) and brine (30 ml). After drying (Na2SO4) and filtering the solvent was removed under reduced pressure and the residue purified by column chromatography (SiO2, 20% ethyl acetate in hexane) to give the title compound (11.22 g, 60%) as an orange oil.

Provenance & Evidence