Methylamine → N-Methyl-5-((trifluoromethyl)thio)pyridin-2-amine

Participants

Reaction Conditions

Reaction Steps

To a mixture of 2-chloro-5-trifluoromethylsulfanylpyridine (1.71 g) and NMP (16 ml), 40% of aqueous methylamine solution (1.86 g) was added dropwise, and then the mixture was heated to 60° C., and stirred with heating for 2 hours. After the mixture was cooled to room temperature, potassium carbonate (1.66 g) was added thereto, and 40% of aqueous methylamine solution (1.86 g) was added dropwise. The mixture was heated to 60° C., and stirred with heating for further 2 hours. After the mixture was cooled to room temperature, water was poured, and extracted with ethyl acetate. The combined organic layer was dried over magnesium sulfate, and concentrated under reduced pressure. The resulting residue was subjected to silica gel column chromatography to give 1.52 g of methyl-(5-trifluoromethylsulfanylpyridine-2-yl)-amine.

Provenance & Evidence