Formaldehyde → HCID 25230624, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 2-[3,5-dichloro-4-(5-isopropyl-6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-3,5-dioxo-2,3,4,5-tetrahydro-[1,2,4]triazine-6-carbonitrile (2.0 g, 4.60 mmol) in methanol (30 mL) was treated with a solution of 37% aqueous formaldehyde (7.5 mL, 100.72 mmol). The resulting mixture was heated to 100° C. for 18 h. At this time, the reaction mixture was cooled to 25° C. and was diluted with water. The resulting precipitate was collected by filtration, was washed with water and was dried in vacuo to afford 2-[3,5-dichloro-4-(1-hydroxymethyl-5-isopropyl-6-oxo-1,6-dihydro-pyridazin-3-yloxy)-phenyl]-3,5-dioxo-2,3,4,5-tetrahydro-[1,2,4]triazine-6-carbonitrile (1.97 g, 92%) as a light yellow solid. ES+-HRMS m/e calcd for C18H14N6O5Cl2 (M+H+) 465.0476, found 465.0475.

Provenance & Evidence