Sodium Nitrite → HCID 66831721, compound

Participants

Reaction Steps

To a solution of 3-(methylthiomethyl)-4-oxo-3,4-dihydroimidazo[5,1-d][1,2,3,5]tetrazine-8-carboxamide (12.43 mmol, 3 g, 1 eq.) in TFA (12 mL) was added sodium nitrite (43.5 mmol, 3 g, 3.5 eq.) dissolved in water (6 mL) portion-wise keeping exothermic effervescence under control and the mixture was stirred at room temperature for over 3 hours. The reaction mixture was poured into ice and it was gently stirred until the ice melted. The resulted suspension was filtered, washed with water and ether and dried under vacuum to give the title compound. Yield=61%. δH (DMSO-d6) 8.85 (1H, s), 5.44 (2H, s), 2.25 (3H, s).

Provenance & Evidence