Acetic Acid → HCID 135670802, compound

Participants

Reaction Steps

A solution of 7-methylsulphonyl-4-oxo-2-(2-propoxyphenyl)-3,4-dihydropyrimido[4,5-d]pyrimidine (0.50 g) in sodium ethoxide solution (from sodium, 0.16 g, and ethanol, 25 ml) was stirred at ambient temperature for 1.5 hours. Cooling and acidification of the reaction mixture with glacial acetic acid (0.42 g) yielded a precipitate which was twice recrystallised from ethanol to yield the title compound, 0.29 g, m.p. 196°-197.5° C.

Provenance & Evidence