Dimethyl Sulfoxide → HCID 13876719, compound

Participants

Reaction Steps

To a solution of oxalyl chloride (5.8 ml) in dichloromethane (100 ml) were added dropwise dimethyl sulfoxide (9.44 ml), a solution of 1-benzyl-4-(1-hydroxyethyl)-1,2,3,6-tetrahydropyridine (13.7 g) in dichloromethane (30 ml) and triethylamine (44.2 ml ) under nitrogen atmosphere at -70° C. Then, the reaction mixture was allowed to warm at ambient temperature and precipitate was filtered off. The filtrate was concentrated in vacuo and the residue was dissolved in a mixture of ethyl acetate (200 ml) and water (100 ml). The organic layer was separated, washed with brine (100 ml), dried over magnesium sulfate. Evaporation of the solvent gave a residue, which was chromatographed on silica gel (350 ml) eluting with a mixture of hexane and ethyl acetate (1:1, V/V) to give 4-acetyl-1-benzyl-1,2,3,6-tetrahydropyridine (9.63 g).

Provenance & Evidence