Sodium Iodide → 6-Iodo-5-methyl-[1,2,4]triazolo[1,5-a]pyrimidin-7-amine

Participants

Reaction Steps

To a stirring mixture of 3.05 g (20.4 mmol) of 5-methyl[1,2,4]triazolo[1,5-a]pyrimidin-7-amine (prepared as described in Kano; Makisumi; Chem. Pharm. Bull.; 6; 1958; 583, 585) in 50 mL of acetic acid at room temperature was added NaI (3.2 g, 21.5 mmol). Chloramine-T trihydrate (6.0 g, 21.5 mmol) was then added portion wise. The resulting mixture was then stirred for 1 h at room temperature. Most of the organic solvent was removed on a rotavap. The mixture was taken tip in 40 mL of CH3CN and filtered. The solid collected was washed with diethyl ether and dried in vacuum oven to give the title compound as a light yellow solid (4.93 g, 88% yield).

Provenance & Evidence