Iodine chloride → N-ethyl-5-iodo-6-methyl-2-(methylthio)pyrimidin-4-amine

Participants

Reaction Steps

To the solution of N-ethyl-6-methyl-2-(methylthio)pyrimidin-4-amine (20 g, 121.6 mmol) in methanol was added iodine monochloride (26.58 g, 163.7 mmol) in small portions at 0° C. Then the reaction mixture was stirred overnight. After evaporation of solvent, the residue was triturated with acetone. The product N-ethyl-5-iodo-6-methyl-2-(methylthio)pyrimidin-4-amine (25.2 g, 75% yield) was collected by filtration. 1H NMR (400 MHz, CDCl3): δ 5.37 (bs, 1H), 3.52 (q, J=7.2 Hz, 1H), 2.50 (s, 3H), 1.26 (t, J=7.2 Hz, 3H).

Provenance & Evidence