n2-Methyl-5-nitropyrimidine-2,4-diamine → 2-N-methylpyrimidine-2,4,5-triamine

Participants

Reaction Steps

N2-methyl-5-nitropyrimidine-2,4-diamine 48 (0.83 g, 4.9 mmol) and 10% palladium on carbon (0.52 g, 0.49 mmol) were combined under nitrogen. Methanol (16 mL) was added, and the atmosphere replaced with hydrogen from a balloon. The reaction was stirred rapidly for 6 h, at which point the atmosphere was replaced with nitrogen and the reaction mixture was filtered through celite, rinsing with methanol. The filtrate was concentrated in vacuo to give N2-methylpyrimidine-2,4,5-triamine 49 as a light pink solid. MS (ES+): 140 (M+H)+; Calc. for C5H9N5=139.16.

Provenance & Evidence