Hydrazine hydrate (1:1) → HCID 135670787, compound

Participants

Reaction Steps

A stirred mixture of 7-methylthio-4-oxo-2-(2-propoxyphenyl)-3,4-dihydropyrimido[4,5-d]pyrimidine (1.31 g) and hydrazine hydrate (3 ml) in ethanol (30 ml) was heated under reflux for 3 hours to yield a yellow precipitate. The reaction mixture was cooled overnight and the yellow precipitate was collected and washed with ethanol and water to yield the title compound, 0.80 g, m.p. 219°-220° C.

Provenance & Evidence