methyl 1,3-dithiane-2-carboxylate

反応条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Dissolve 192 g (1 mole) of ethyl 1,3-dithiane-2-carboxylate in 1 L of methanol and add 5 ml of concentrated hydrochloric acid. Stir at room temperature for 18 hours. Neutralize the mixture with 1 N sodium hydroxide and remove the methanol under reduced pressure. Take up the residue in 1 L of ether, wash with water, dry over magnesium sulfate and evaporate. Distil the residue under reduced pressure to obtain methyl-1,3-dithiane-2-carboxylate. Neutralize the mixture with 1 N sodium hydroxide and remove the methanol under reduced pressure wash with water dry over magnesium sulfate evaporate Distil the residue under reduced pressure