3-[(2-Methyl-4-oxo-4H-chromen-8-yl)methylene]pentane-2,4-dione → 6-Acetyl-7-methyl-5-(2-methyl-4-oxo-4H-chromen-8-yl)-5,8-dihydropyrido[2,3-d]pyrimidin-4(3H)-one

Participants

Reaction Steps

500 mg (1.85 mmol) of 3-[(2-methyl-4-oxo-4H-chromen-8-yl)methylene]pentane-2,4-dione are mixed with 308 mg (2.77 mmol) of 6-aminopyrimidin-4(3H)-one, dissolved in 10 ml of isopropanol and heated under reflux under argon for 2 days. The mixture is then concentrated and the residue is recrystallized from methanol. 341 mg (51% of theory) of the title compound are obtained as a yellow solid.

Provenance & Evidence