1,3-Dichloroacetone → 1-(4-(Chloromethyl)-1,3-thiazol-2-yl)piperidine

Participants

Reaction Steps

A mixture of piperidine-1-carbothioamide (1.0 g), 1,3-dichloro-2-propanone (0.91 g) and ethanol (30 mL) was heated under reflux for 1 hr. After concentration of the reaction mixture, saturated aqueous sodium hydrogen carbonate was added to the residue and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated. The residue was subjected to silica gel column chromatography to give 1-(4-chloromethyl-1,3-thiazol-2-yl)piperidine as a colorless oil (1.00 g, yield 67%) from a fraction eluted with ethyl acetate-hexane (1:4, v/v).

Provenance & Evidence