6-Methoxypyrimidine-2,4-diamine → HCID 46221876, compound

Participants

Reaction Steps

To a stirred solution of 7.0 g (0.05 mol) 6-methoxy-2,4-diaminopyrimidine in 100 ml acetic acid (10% conc. in water) at 50-60° C. was added dropwise over a period of 30 min a solution of 4.55 g (0.07 mol) sodium nitrite in 20 ml water. The solution was stirred at this temperature for a further 30 min and then stirred at room temperature overnight. The filtrate was filtered off with suction, washed with water and dried. 5-Nitroso-2,4-diamino-6-methoxypyrimidine (7.80 g, 92%) was obtained as a violet solid.

Provenance & Evidence